Kaisekukun

[Important] Urgent Claude Fable 5 and Mythos 5 Decommissioning due to U.S. Export Restrictions

Sat, 13 Jun 2026 13:00:00 +0900

On June 13, 2026 (JST), Anthropic announced the global decommissioning and disabling of its newly released models, Claude Fable 5 and Mythos 5, effective immediately.

This drastic decision comes after the United States government (under the Trump administration) issued a sudden export restriction order on the afternoon of June 12, citing national security concerns. As a result, all active API endpoints for both models have been shut down. This article reviews the geopolitical context surrounding the shutdown and outlines the immediate steps developers must take to restore service.

Goodbye WordPress: Why and How We Migrated to Hugo Static Site Generator

Fri, 12 Jun 2026 12:00:00 +0900

We have officially completed the transition of netguide.jp from WordPress to Hugo, a modern static site generator (SSG).

Operating a dynamic CMS like WordPress had become increasingly bottlenecked by page load delays, security updates, and hosting costs. Migrating to a static workflow resolved all of these issues. In this case study, we share our motivation, migration strategy, and the post-migration performance gains.

1. Three Reasons We Left WordPress

While WordPress remains a highly versatile CMS, its dynamic, database-driven architecture presented critical challenges as our content grew:

Unleashing Creativity: Features and Creative Use Cases of Claude Fable

Tue, 09 Jun 2026 12:00:00 +0900

While AI has revolutionized code generation and structured business writing, capturing the nuance, subtext, and flow of creative literature has remained a challenge. To solve this, Anthropic engineered Claude Fable, a model fine-tuned specifically for creative writing, fiction development, and world-building.

In this article, we explore how Claude Fable helps novelists, screenwriters, and copywriters push the boundaries of creative expression.

1. What makes Claude Fable Different?

Standard large language models (like Claude Sonnet or GPT-4) are trained to be concise, helpful, and literal. When asked to write a story, they often rely on clichés and formulaic prose that feels distinctly “AI-generated.”

Introducing Claude Mythos: The Next-Gen AI Model and How to Use It

Mon, 01 Jun 2026 12:00:00 +0900

Anthropic has officially announced its next-generation flagship AI model: Claude Mythos.

Surpassing the capabilities of Claude 3.5 Sonnet and Claude 3 Opus, Claude Mythos introduces a powerful reasoning architecture that transforms how we write code, analyze data, and solve logical problems. In this article, we dive deep into the key features, benchmarks, and real-world use cases of Claude Mythos.

1. What is Claude Mythos? Key Features and Innovations

Claude Mythos isn’t just about scaling up parameters; it integrates an embedded Reasoning Chain directly into its inference architecture. Before answering, the model maps out logical steps internally, reducing hallucinations and maximizing accuracy.

Modern Web Scraping: Ethics, Legality, and Best Practices in 2026

Wed, 20 May 2026 12:00:00 +0900

Design web scraping systems responsibly without overloading web servers, respecting robot files and API terms.

As AI development fuels a massive demand for raw data, web scraping has become an essential software development skill. However, extracting web layouts without permission introduces serious technical, ethical, and legal concerns. This article covers the legal boundaries of crawling, ethical pipeline design rules, and a Python example featuring retry behaviors and rate-limiting structures.

1. Legal and Ethical Boundaries of Scraping

Auto-extracting data from websites falls into a legal gray area. Consider these vital concepts:

Comparing Figma to Code Tools for Modern UI Developers

Fri, 15 May 2026 12:00:00 +0900

Explore the ecosystem of plugins translating Figma vector layouts into web assets and component classes.

Converting mockups from Figma into clean, responsive React, Vue, or HTML/CSS code has historically been a tedious, manual task. Today, modern “Figma-to-Code” tools use AI to interpret vector layouts and produce highly readable code. This article compares industry leaders—Anima, Locofy, and native Dev Mode plugins—and provides styling rules for your design files to guarantee clean code exports.

Advanced Tuning for Vite Build and Bundling Performance

Sun, 10 May 2026 12:00:00 +0900

Keep your Vite builds extremely fast using custom bundling settings and caching layers.

Vite is lightning-fast out of the box, but as codebases expand, production builds can slow down due to heavy Rollup compilation stages. This guide outlines how to optimize your builds using manualChunks, esbuild minification settings, and dependency pre-bundling configurations.

1. Code Splitting: Balancing Asset Sizes

By default, Vite bundles your application code into unified scripts. To prevent downloading unnecessary JavaScript during the initial page load, developers must implement robust code-splitting strategies.

SEO and Core Web Vitals: Demystifying and Improving INP

Tue, 05 May 2026 12:00:00 +0900

INP (Interaction to Next Paint) measures a web page’s responsiveness to user interactions. This article demystifies Google’s Core Web Vitals metric, explores how it differs from the deprecated FID metric, and outlines how to optimize your JavaScript execution pathways to achieve “Good” scores.

1. What is Interaction to Next Paint (INP)?

INP tracks the latency of all user interactions (clicks, taps, and keyboard inputs) during a user’s visit to a page. It measures the duration between when a user initiates an action and when the browser paints the next frame showing the visual update.

Building Blazing Fast APIs with Hono and Cloudflare Workers

Fri, 01 May 2026 12:00:00 +0900

Combine the micro-framework Hono and Cloudflare Workers to deliver lightning-fast responses on the global edge.

In 2026, building edge-native serverless backends has become the modern standard. This guide dives into why “Hono + Cloudflare Workers” is a powerful stack, how to initialize a project, and includes a TypeScript API example.

1. Why Choose Hono and Cloudflare Workers?

Traditional web frameworks (like Express or NestJS) were designed before modern Web Standard APIs emerged. Consequently, they bundle node-specific polyfills and runtime code, making them too heavy for lightweight serverless nodes.

PostgreSQL Performance Tuning for Web Developers

Mon, 20 Apr 2026 12:00:00 +0900

Optimize slow-performing applications by profiling database queries in PostgreSQL with EXPLAIN. Slow queries are the single largest bottleneck in most web applications. This guide walks you through essential index optimization guidelines, how to read execution plans, and key configuration parameter adjustments for self-hosted or managed databases.

1. Designing Effective Indexes

The primary bottleneck in modern databases is Disk I/O (reading block files from storage). Adding indexes allows PostgreSQL to query data records directly instead of scanning the entire table.

Accelerating GitHub Actions CI/CD workflows using Caching

Wed, 15 Apr 2026 12:00:00 +0900

Optimizing CI/CD workflow times directly impacts developer productivity and reduces computing expenses. This article shows you how to integrate dependency caching in GitHub Actions, helping you slash compilation and package setup times.

We provide YAML workflow templates for Node.js, Python, and Rust, alongside best practices to ensure optimal cache hits.

1. Why Cache Dependencies in CI/CD?

When a CI agent starts without caching, it spins up a clean container and fetches every dependency from package registries. This introduces several drawbacks:

Developing Browser Extensions with Manifest V3

Fri, 10 Apr 2026 12:00:00 +0900

Manifest V3 is now the official and mandatory specification for building Google Chrome extensions. With the deprecation of Manifest V2, developers must adopt non-persistent Service Workers for background processing and adapt to the declarative net request model. This guide explains the core architectural shifts in Manifest V3 and provides a simple walkthrough of setting up a compliant extension.

1. Primary Shifts from Manifest V2 to V3

Manifest V3 (MV3) was designed to make browser extensions more secure, privacy-respecting, and performant.

State of Rust Web Development: Top Framework Comparison

Sun, 05 Apr 2026 12:00:00 +0900

Rust has matured significantly as a premier backend language. This article evaluates the top Rust web frameworks, focusing on the differences between the current industry leaders: Axum and Actix-web. We cover their architectural patterns, performance profiles, and provide a bootstrap code snippet to help you choose the right framework.

1. Top Framework Overview

When building web applications or microservices in Rust, developers generally choose between these two frameworks:

1) Axum

Axum is developed and maintained by the tokio team, the creators of Rust’s de facto standard asynchronous runtime.

Tailwind CSS v4 Features and Migration Guide

Wed, 01 Apr 2026 12:00:00 +0900

Tailwind CSS v4.0 introduces a brand-new compilation engine written completely in Rust, accelerating build loops by up to 10x. Additionally, it transitions from a JavaScript-based configuration file (tailwind.config.js) to a CSS-first approach, where customizations are defined inside your primary stylesheet using standard CSS variables.

This article reviews the major changes in Tailwind CSS v4 and provides a practical migration walkthrough to help you upgrade your projects.

1. Key Changes in Tailwind CSS v4

1) Rust-Powered “Oxide” Engine

The defining feature of v4 is its compiler. Rewritten in Rust, the Oxide engine processes stylesheet files significantly faster than the old PostCSS-based engine. This translates to near-instantaneous dev server startups and hot module replacement (HMR), keeping developers in their flow.

The Benefits of Adopting PWA (Progressive Web Apps) in 2026

Fri, 20 Mar 2026 12:00:00 +0900

PWAs (Progressive Web Apps) allow web applications to be installed on user devices, offering features like push notifications and offline support.

In 2026, the mobile web ecosystem has matured significantly, with enhanced support for Web Push on both iOS and Android. Choosing PWA architecture is now more compelling than ever for cross-platform app development. This article explores the technical advantages and strategic business benefits of PWAs in 2026.

1. Technical Context of PWAs in 2026

Historically, PWAs faced adoption hurdles due to limited capability support on iOS Safari. Today, the landscape has completely changed:

Understanding CSS Subgrid Layout for Modern Design

Sun, 15 Mar 2026 12:00:00 +0900

CSS Grid revolutionized how web layouts are structured. However, a common challenge remained: aligning nested items (grandchild elements) inside parent Grid Items to the main grid lines.

This was resolved with the introduction of CSS Subgrid, a specification update for CSS Grid Layout. This article explains the fundamentals of CSS Subgrid and how to apply it to common layout problems like card lists.

1. What is CSS Subgrid?

Traditionally, only direct children of a Grid container can be positioned along the defined grid tracks. When you declare another grid inside a Grid Item, that nested grid is completely isolated from the outer parent grid.

Docker Container Image Security Best Practices

Tue, 10 Mar 2026 12:00:00 +0900

In modern cloud-native development, Docker containers are the default standard for deploying web applications.

However, generic Dockerfiles often yield images containing OS vulnerabilities, unnecessary tooling, or root process privileges. In this guide, we cover the essential best practices to harden your Docker container images for production.

1. Enforce Multi-stage Builds

Leaving build tools, compiler caches, or developer dependencies (like npm or git) inside your final runtime image increases the container size and broadens the attack surface.

TypeScript 5 Features and Practical Best Practices

Thu, 05 Mar 2026 12:00:00 +0900

As the absolute standard for frontend and backend development, TypeScript continues to evolve.

The TypeScript 5.x releases focus heavily on compiler speed, bundle reductions, and syntax refinements that dramatically improve Developer Experience (DX). In this article, we cover practical TypeScript 5 features you should adopt in your daily workflows.

1. `const` Type Parameters

Previously, if you wanted TypeScript to infer an object literal arguments as narrow, read-only literal types, the caller had to append as const to the arguments.

Essential Web Accessibility (WCAG) Knowledge in 2026

Sun, 01 Mar 2026 12:00:00 +0900

Legislation enforcing digital accessibility is tightening globally. In 2026, targeting compliance with WCAG 2.2 (Web Content Accessibility Guidelines) at Level “AA” is no longer optional—it has become a standard engineering requirement for web platforms.

To build barrier-free web experiences, developers must understand semantic structures, user inputs, and visual design requirements.

1. Key Guidelines Introduced in WCAG 2.2

WCAG 2.2 focuses on improving accessibility for mobile users, people with cognitive disabilities, and low-vision individuals.

Key Points for Performance Optimization in Next.js App Router

Wed, 25 Feb 2026 12:00:00 +0900

Leveraging React 18 capabilities, Next.js App Router provides a highly performant architecture for building modern web frontends.

However, misconfiguring server-client boundaries or caching rules can lead to slow response times. In this guide, we explore practical optimization techniques to build blazing-fast Next.js applications.

1. Maximize React Server Components (RSC)

The primary benefit of the App Router is that all components are Server Components by default. This eliminates large portions of JavaScript from the client-side bundle.

Is Shared Hosting Obsolete? A Beginner's Guide to Edge Computing with Cloudflare Workers

Fri, 20 Feb 2026 18:49:00 +0000

“Building a new web service or API sounds great, but server maintenance costs and effort hold me back…” “I’m always worried my server will crash during traffic spikes.”

Running a website or application means constantly dealing with physical servers. Monthly fixed costs, security updates, handling sudden traffic surges — it adds up to significant stress for developers and operators.

But in 2026, a trend is rapidly gaining traction that fundamentally changes web development: edge computing (serverless) — running programs without traditional hosting — and the leading platform is Cloudflare Workers.

Auto-Post WordPress Articles to Social Media (X, Bluesky) in 2026

Sun, 15 Feb 2026 18:43:00 +0000

“After publishing a blog post, opening X, copying the URL, and writing a promo feels like a chore…” “I’m so exhausted from writing that I keep skipping the social media announcement.”

Spending hours crafting a great article only to have no one read it is truly disheartening.

In modern web publishing, sharing articles on social media is just as important as SEO for driving traffic. But manually posting to multiple platforms drains time and energy.

Stop Reusing Passwords Today: The Beginner's Guide to Password Managers (2026)

Tue, 10 Feb 2026 18:40:00 +0000

The holiday season is over, and a new year of work has begun. Have you ever frozen at a login screen, realizing you have no idea what your password is?

Clicking “Forgot Password,” only to be told “You cannot use a previous password.” Adding random digits, then forgetting again… This password reset hell is a massive waste of time.

But reusing the same password everywhere is the modern equivalent of handing out copies of your house key to strangers.

The Ultimate Guide to Business Credit Cards for Freelancers in 2026

Thu, 05 Feb 2026 18:37:00 +0000

“Are you paying for server fees, domain costs, and phone bills with your personal credit card?”
“You want a business card, but the annual fee worries you?”

If you are just starting out as a freelancer or running a side business, you might be struggling with money management.

Just as you should keep a separate business bank account, separating your credit cards into personal and business use is critically important.

WordPress Too Slow? 5 Proven Steps to Score 90+ on PageSpeed Insights

Mon, 05 Jan 2026 07:00:00 +0000

“Spent hours writing a great article, but it loads so slowly nobody reads it…” “PageSpeed Insights shows a red score on mobile — embarrassing.”

Site speed is not just about comfort — Google uses page load speed as a ranking factor (SEO). A slow site hurts both user experience and search visibility.

“Speeding up a site sounds like engineering work.” Not necessarily. With the right plugin settings and a few image tricks, anyone can dramatically improve speed.

Beyond ChatGPT: Why Local AI on Your Own PC Is the Breakthrough Trend of 2026

Thu, 01 Jan 2026 18:33:00 +0000

“I understand AI is useful, but I’m uneasy about entering sensitive work data…” “Monthly AI subscription fees are quietly eating into my budget.”

As generative AI becomes part of daily life, many users face these concerns. In 2026, the hottest trend in IT is Local AI (Local LLM) — running AI directly on your own PC without relying on cloud servers.

This guide explains what local AI is, how it differs from cloud-based AI, and why it is suddenly gaining traction.

Slow Charging? How PD and GaN Can Cut Your Charge Time in Half

Wed, 17 Dec 2025 03:00:00 +0000

“Is your phone charging slower than usual?”
“Is your laptop charger too heavy to carry around?”

Do you feel a little stress every time you charge your phone or computer?

In recent years, the world of chargers has undergone a revolution.
If you are still using the old charger that came with your phone or a cheap cable from a dollar store, you might be wasting precious time.

With the latest technology, what used to take 2 hours can now be done in 30 minutes, and brick-heavy laptop adapters can be reduced to the size of an egg.

5 Essential Steps to Secure Your WordPress Site from Hackers

Thu, 04 Dec 2025 07:00:00 +0000

“My blog is too small to be a target.” “Security sounds complicated, so I keep putting it off.”

If that is what you think, you could be in serious danger.

Malicious bots are constantly trying every WordPress site’s “doorknob” worldwide, 24/7. They do not distinguish between personal blogs and major sites. Any site with weak security is a target.

If your site gets hijacked, attackers could inject spam links, steal visitor data, or even delete your entire site. Years of hard work could vanish instantly.

Can't Access Certain Sites? How to Check and Handle Cloudflare Outages (502 Errors)

Fri, 21 Nov 2025 05:29:19 +0000

“Suddenly I can’t access a site I visit every day…” “My blog is showing a ‘502 Bad Gateway’ error!”

If multiple sites are down simultaneously, it could be a Cloudflare outage. Cloudflare handles nearly 20% of global web traffic — it is a massive intersection on the internet. When an incident occurs here, countless sites become unreachable worldwide.

This guide explains how to check if Cloudflare is experiencing an outage and what steps both users and site administrators should take.

Internet Slow Only at Night? You Might Need IPv6 (IPoE) — Explained Simply

Thu, 20 Nov 2025 09:00:00 +0000

“Daytime is fine, but between 8 PM and 11 PM, videos suddenly start buffering…” “Online games lag and I can’t win!”

If you have these problems, even after restarting your router or buying a new one, the cause might be your internet connection type (road congestion).

This guide explains IPv6 IPoE — a congestion-free high-speed standard — in plain language.

Why Is It Slow Only at Night? The Toll Booth Effect

Traditional internet connections (called PPPoE) are like highway toll booths. Everyone must pass through a single authentication point to reach the wider internet. During off-peak hours, traffic flows smoothly. But at night and on weekends, cars (data) flood the toll booth, causing massive congestion. That is why your connection slows down in the evening.

Nov 18, 2025: Massive Cloudflare Outage Took Down X, ChatGPT, Discord — What Happened?

Wed, 19 Nov 2025 06:00:00 +0000

“Last night the internet suddenly stopped working…” “X (Twitter), ChatGPT, even Discord — none of them would load!”

On the night of November 18, 2025, many people experienced exactly this. It wasn’t your phone or Wi-Fi — it was a global-scale Cloudflare outage that disrupted countless services.

Here is the timeline, the surprising cause, and what we can learn from it.

Wi-Fi Too Slow or Not Connecting? Simple Fixes You Can Try Right Now

Fri, 07 Nov 2025 06:00:00 +0000

Videos buffering endlessly. Your voice cutting out during web meetings. Nothing is more frustrating than a slow or unreliable Wi-Fi connection.

“I don’t know anything about networking settings, and calling support sounds like a hassle…” “It was working fine yesterday — why is it suddenly slow?”

Many people struggle with these exact problems. But the good news is that Wi-Fi issues can often be resolved with some simple checks, no technical expertise required. In this guide, we will walk through the common causes of slow or unstable Wi-Fi and the specific steps you can take to fix them.

iPhone 17 Announced: Release Date, Pricing, and New Features Explained

Tue, 09 Sep 2025 15:00:00 +0000

Hello!

Apple has announced the new iPhone 17 series. Here is a comprehensive summary of the confirmed specs, pricing, and features. Let us take a look at what has changed from the iPhone 16 and the key highlights for practical use.

Announcement, Release Date, and Pricing

Announcement: September 9, 2025, at Apple’s online event
Pre-orders: Starting September 12
Release: Rolling out from September 19
Japan pricing (base model): From ¥129,800

Model Lineup, Sizes, and Storage

The iPhone 17 series includes multiple models, each with distinct characteristics:

XServer VPS Launches Japan's First Completely Free VPS Plan

Thu, 10 Jul 2025 13:07:43 +0000

Hello!

XServer Inc. has announced the launch of Japan’s first completely free VPS plan for its XServer VPS service. This free plan allows developers and learners to access a full VPS environment without any cost.

Free Plan Overview

Launch date: July 10, 2025
Pricing: Completely free — no initial or monthly fees
Memory options: 2GB or 4GB RAM
Use cases: Web app development, generative AI tool testing, learning and experimentation

Target Users and Applications

Individual developers and learners: Instantly set up a free environment for testing generative AI apps (e.g., Dify).
Business testing: Evaluate performance on the free plan before full-scale deployment.

Comparison with Other Free VPS Options

Truly free VPS plans are rare. Competitors often impose time limits or require credit card registration. XServer’s service offers no-risk, always-available signup.

My Number Card on iPhone Launches Today (June 24, 2025): What You Need to Know

Tue, 24 Jun 2025 01:46:14 +0000

Hello!

Today, the Digital Agency of Japan officially launched the “My Number Card on iPhone” service, effective June 24, 2025. With Apple Wallet support, government services can now be accessed with just an iPhone.

Service Launch Date

From June 24, 2025, My Number Card can be registered in iPhone’s Apple Wallet.

Key Features and How to Use

1. Registration Process

Update the “Myna Portal” app to the latest version, then:

My Number Card Now Supported on iPhone: Register in Apple Wallet from June 24

Fri, 06 Jun 2025 02:22:01 +0000

Hello!

Today, the Digital Agency of Japan officially announced that “My Number Card on iPhone” service will launch on June 24, 2025. This allows users to register their My Number Card in Apple Wallet, making government services more accessible and convenient.

My Number Card Now Available on iPhone

With this feature, iPhone users can access government services — such as logging into Myna Portal and obtaining certificates at convenience stores — without carrying a physical My Number Card. Facial recognition (Face ID) and fingerprint authentication (Touch ID) ensure secure and easy identity verification.

Is Yu-Pack Facing an Existential Crisis? The Impact of Japan Post's Permit Revocation

Thu, 05 Jun 2025 01:10:00 +0000

Hello!

Yu-Pack — Japan Post’s flagship parcel service, loved by many for its nationwide delivery network and accessibility at post offices — is now facing an unprecedented existential crisis.

The trigger was the June 5, 2025 announcement that Japan Post’s freight transport permit would be revoked. MLIT determined that numerous post offices nationwide had violated the law by failing to conduct proper driver safety check-ins and safety confirmation procedures.

Japan Post Faces Unprecedented Transport Permit Revocation Over Safety Failures

Thu, 05 Jun 2025 00:30:00 +0000

Hello!

On June 5, 2025, the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) decided to revoke Japan Post’s general freight motor carrier permit. The decision stems from widespread failures to properly conduct driver safety check-ins at post offices nationwide. This action will ground approximately 2,500 trucks and vans, severely impacting Japan Post’s logistics operations.

The Reality of the Safety Violations

MLIT audits found that over 60% of the 119 inspected post offices had inadequate driver check-in procedures, violating the Motor Truck Transportation Business Law. Violations included failure to verify alcohol detector use and check-in frequencies falling well below legal requirements.

DeepSeek: The Chinese AI Startup Facing a Storm of Controversy

Wed, 04 Jun 2025 00:00:00 +0000

Hello!

Chinese AI startup DeepSeek has rapidly gained global attention with high-performance models rivaling OpenAI and Google. However, its meteoric rise is accompanied by mounting controversies over data misuse, security concerns, and more. Here is a breakdown of the key allegations.

1. Unauthorized Use of Google AI Data?

DeepSeek’s latest model, “DeepSeek-R1-0528,” released in May 2025, shows strong performance in math, programming, and reasoning. However, AI researchers suspect some training data was taken without authorization from Google’s Gemini model. DeepSeek has not disclosed detailed training data sources, raising transparency concerns.

Nintendo Switch 2 Launches June 5! Latest Info on Price, New Features, Compatible Software

Thu, 29 May 2025 07:04:58 +0000

Hello!

Finally, on Thursday, June 5, 2025, Nintendo’s new console “Nintendo Switch 2” launches. Eight years after the original Switch, this long-awaited successor brings significant evolution in both performance and features. This article covers Switch 2’s price, specs, notable new features, compatible software, and launch注意事项 in detail.

Release Date and Price

Release Date: Thursday, June 5, 2025. Price: Japanese Domestic Edition: ¥49,980 (tax incl.), Multilingual Edition: ¥69,980 (tax incl.).

Fantasy Life i: The Girl Who Steals Time Arrives – A New Slow Life RPG's Charm and Latest Info

Wed, 21 May 2025 15:00:00 +0000

Hello!

Fantasy Life i: The Girl Who Steals Time finally launches on Thursday, May 22. Billed as “everyone’s slow-life RPG,” this latest entry in the series seamlessly blends free-form Life (job) switching with adventure. While the previous mobile game Fantasy Life Online shut down after just one year, what new delights does this installment hold? Here we cover the release date, supported platforms, pricing and editions, and the game’s appeal in full.

[Breaking] Nintendo Switch 2 × Mario Kart World Bundle: Japan Edition ¥63,980 / Launches June 5!

Wed, 02 Apr 2025 14:43:40 +0000

Hello!

For Nintendo fans, alongside the long-awaited next-generation hybrid console “Nintendo Switch 2,” the new Mario Kart series title “Mario Kart World” has been officially confirmed! Here we introduce detailed information about the special bundle package released exclusively in Japan, based on the latest official announcements.

1. Release Date and Package Contents

According to the official announcement, the “Mario Kart World” bundle will be released simultaneously with Nintendo Switch 2. The release date is June 5, same as the console.

[Breaking News] Nintendo Switch 2 Official Price & Release Date! Japan Edition ¥59,800, Multilingual Edition ¥79,800 / Release June 5

Wed, 02 Apr 2025 14:30:48 +0000

Hello!

For all Nintendo Switch fans, the long-awaited next-generation hybrid gaming console “Nintendo Switch 2” has finally been officially announced! Based on the latest official information, we’ll introduce the official price, release date, and notable new features in detail. Let’s take a look at the full picture of Switch 2, which will further enrich your entertainment experience.

1. Official Price and Release Date Details

According to Nintendo’s official announcement, Nintendo Switch 2 will be released in the following two models:

IOWN Explained: NTT's Next-Generation Optical Network and Its Future Potential

Sat, 08 Feb 2025 21:00:00 +0000

Hello!

As communication technology rapidly evolves, our lives and businesses are transforming into an increasingly advanced digital society. Among these developments, NTT’s IOWN (Innovative Optical and Wireless Network) has garnered significant attention as a next-generation communication network. This article explores IOWN’s basic concepts, features, future prospects, and current challenges.

1. What Is IOWN?

IOWN is NTT’s concept for a revolutionary communication infrastructure. It goes beyond traditional optical fiber and wireless communication by integrating optical and wireless technologies to achieve faster speeds, lower latency, and greater energy efficiency. The goal is to dramatically improve data transmission speeds and enable real-time processing of massive data volumes, supporting IoT, 5G/6G, AI, autonomous driving, and more.

iPhone SE 4 Rumored to Launch Next Week: Latest Leaks and Expected Features

Sat, 08 Feb 2025 07:00:00 +0000

Hello!

Rumors are intensifying that Apple will announce the iPhone SE 4 next week. This model has been highly anticipated by Apple fans and smartphone users alike. Here is everything we know so far about the expected features, leaks, and market impact.

1. Background of the iPhone SE 4

Apple has traditionally offered cost-effective models through the iPhone SE series, gaining strong support in the mid-range market. The rumored iPhone SE 4 is expected to carry on this tradition while incorporating the latest technology as a next-generation entry model.

Examining the DeepSeek Controversies: Allegations, Industry Impact, and Future Outlook

Tue, 04 Feb 2025 07:00:00 +0000

Hello! DeepSeek, which we covered recently, has been rapidly gaining attention in the AI industry for its innovative low-cost, high-efficiency AI models. However, various allegations have also emerged, sparking debate both inside and outside the industry. This article delves into the controversies behind DeepSeek’s success, the specific allegations, industry reactions, and future prospects.

1. DeepSeek’s Growth and Background

DeepSeek, a Chinese AI company, has achieved remarkable results in generative AI. By maintaining performance comparable to large-scale AI models while achieving development at surprisingly low costs, the company has impressed competitors. Its open-source strategy, sharing technology with researchers and developers worldwide, has also been praised for democratizing AI.

DeepSeek: The Chinese AI Startup Reshaping the Industry with Low-Cost Innovation

Mon, 03 Feb 2025 21:00:00 +0000

Hello!

Today, we take a deep dive into DeepSeek, the Chinese AI startup that is rapidly reshaping the industry. With low-cost, highly efficient AI models, DeepSeek has the potential to break beyond the boundaries of traditional AI. This article covers the company’s key technologies, available models, and future outlook.

1. What Is DeepSeek?

DeepSeek is a Chinese AI company gaining attention in generative AI. It focuses on reducing development costs and energy consumption while maintaining performance comparable to large-scale AI models. By making advanced AI more accessible to businesses and researchers, DeepSeek is driving the democratization of AI.

【Breaking News】 The Nintendo Switch 2 finally revealed in its entirety! New features, release date, and all the latest news!

Thu, 16 Jan 2025 13:30:23 +0000

Hello, and welcome to the Nintendo Switch 2!
Today, I’d like to share with you all the information that is currently available about the new Nintendo Switch 2 game console, which was finally officially announced today and will be released in 2025.Nintendo Switch has been loved by game fans around the world for its innovative hybrid design and rich game lineup. Nintendo Switch is loved by game fans around the world for its innovative hybrid design and rich game lineup. How will its next-generation model, Switch 2, evolve? In this article, we will discuss in detail its features, functions, release date, and even new software!

VPN Basics: How to Choose and Use the Best VPN Service for Security and Privacy

Tue, 14 Jan 2025 21:00:06 +0000

Hello! Today, we are taking a detailed look at VPNs — a technology you may have heard about but might not fully understand. VPNs are useful for protecting personal information and bypassing geographic restrictions. This guide explains the basics, benefits, and recommended services.

1. What Is a VPN?

How VPN Works

VPN (Virtual Private Network) creates a secure, encrypted “tunnel” over the internet. This tunnel protects your data from being intercepted by third parties. For example, using a VPN on public Wi-Fi prevents hackers from stealing your personal information.

[Must Read] Nintendo Switch Successor Release Date Decided? Latest Info Roundup!

Mon, 13 Jan 2025 21:00:00 +0000

Lately, there’s been a lot of information circulating about the Nintendo Switch successor, and you might be wondering, “When will the release date be?”

You might also be concerned about “What about new features and performance?”

For those with these questions, we’ve compiled the latest information on the Nintendo Switch successor.

As the launch of a new console approaches, it’s natural to feel a mix of excitement and anxiety.

Coreserver Review: High-Performance Hosting at a Reasonable Price

Sat, 04 Jan 2025 21:00:00 +0000

Hello! Today, we are taking a detailed look at Coreserver, a popular shared hosting service. If you are struggling to choose the right hosting for your website, blog, or online store, this is worth reading.

This article covers Coreserver’s features, benefits, and how to get started.

1. What Is Coreserver?

Coreserver is a high-performance shared hosting service provided by GMO Internet Group. It offers flexibility for a wide range of needs — from individuals to businesses — with excellent cost-performance. It is especially recommended for beginners and those running medium to large-scale sites.

The Complete Guide to Choosing and Using a Wi-Fi Router

Fri, 03 Jan 2025 22:00:00 +0000

Hello! Today, we are diving deep into the Wi-Fi router — an essential device for modern life. With smartphones, computers, game consoles, and even home appliances connecting to the internet, a good Wi-Fi environment is crucial. This guide covers how to choose the right router and get the most out of it.

1. Understanding Wi-Fi Router Basics

What Does a Wi-Fi Router Do?

A Wi-Fi router wirelessly delivers internet to devices throughout your home or office. Think of your internet connection as a highway; the router acts as the intersections and off-ramps that distribute traffic throughout your house. Choosing the right router reduces congestion and enables smooth communication.

Internet Basics: Understanding How the Internet Works

Thu, 24 Oct 2024 08:00:00 +0000

Hello!

Welcome to this beginner-friendly guide on how the internet works! Even if you are not familiar with technology, this article will explain basic internet terms in a simple, easy-to-understand way.

The Basic Structure of the Internet

The internet is a vast network of computers connected worldwide, exchanging information. More specifically, it is made up of many smaller networks (like home or office networks) connected together. When these networks communicate, they use communication rules called protocols. Thanks to these protocols, we can access websites, stream videos, and send emails.

Free Square Register Giveaway & Tap-to-Pay on iPhone: Get Started Today

Mon, 23 Sep 2024 10:30:00 +0000

This article contains affiliate links.

Hello!

Today, we are introducing two attractive Square campaigns. But first, let us talk about why Square is a great choice for businesses. Square offers a simple yet powerful payment system trusted by many merchants. With low initial investment and excellent cost-performance, it is an ideal tool especially for small businesses and new startups.

Speed Up Your Internet by Updating Your Devices and Software

Thu, 19 Sep 2024 04:00:00 +0000

Hello!

Today, we focus on how updates can improve your internet speed. Outdated hardware and software are common causes of slow connections. This guide covers updating routers, devices, and software with specific steps.

Why Updates Matter

Outdated hardware and software suffer from reduced performance and increased security risks. Regular updates include bug fixes, performance optimizations, and security enhancements.

iOS 18 Is Here: Key Features of Apple's Latest iPhone Update

Wed, 18 Sep 2024 04:00:00 +0000

Hello!

Apple’s latest operating system, iOS 18, has finally been released! Packed with new features and improvements, it offers iPhone users enhanced convenience and entertainment. The update focuses on privacy, AI evolution, and smarter daily functionality. Here is a breakdown of the key features.

Key New Features in iOS 18

1. Smarter AI Assistant

Siri has become significantly smarter with advanced natural language processing, providing more accurate and personalized responses. It can now search across multiple apps, suggest schedules, and create shopping lists through simple voice commands.

ChatGPT-o1: OpenAI's Latest AI Model Explained

Tue, 17 Sep 2024 04:00:00 +0000

Hello!

Today, we are introducing ChatGPT-o1, the latest language model from OpenAI that has been gaining significant attention. ChatGPT-o1 represents a major leap forward in AI technology, with substantially improved performance over previous versions. In this article, we will explore the features, applications, and future potential of ChatGPT-o1 in detail.

What is ChatGPT-o1?

ChatGPT-o1 is the latest version of OpenAI’s natural language processing model, designed to deliver even more advanced text generation and conversational responses. It is built to make communication with AI more natural and responsive, bringing AI assistance closer to everyday life and business scenarios.

Speed Up Your Internet by Changing Your DNS Settings

Mon, 16 Sep 2024 04:00:00 +0000

Hello!

Today, we will look at how adjusting your DNS settings can improve your internet speed. DNS (Domain Name System) plays a crucial role when you access websites. This article explains the basics of DNS, how to choose faster DNS servers, and the specific setup steps.

What Is DNS?

DNS (Domain Name System) is like an address book for the internet. It converts human-readable website names (e.g., www.example.com) into IP addresses (e.g., 192.0.2.1) that computers use to connect to the correct server.

Apple Wallet Adds ID Support in Japan: A More Convenient Digital Life

Fri, 31 May 2024 01:00:00 +0000

Hello!

Today, we are discussing a significant announcement: Apple is bringing ID support to Apple Wallet in Japan. As technology continues to make our daily lives more convenient, this new feature is expected to have a particularly large impact.

Apple Wallet Adds ID Support

Apple has announced the ability to add identification documents to Apple Wallet on iPhone. This feature allows users to store official IDs — such as driver’s licenses and My Number cards — digitally and present them when needed.

Square Tap to Pay Arrives in Japan: Contactless Payments on Your Smartphone

Thu, 30 May 2024 14:00:00 +0000

Hello!

Today, we are talking about Square’s services and the convenience of smartphone tap-to-pay. If you are starting a business or considering cashless payments, this is essential reading. We also have details on Square’s limited-time discount campaign.

This page contains affiliate links.

Limited-Time Campaign

From May 15 to June 28, Square is running a discount campaign on tap-to-pay terminals! Purchase during this period to get significant savings.

iPhone Can Be Used as a Contactless Payment Terminal! A Simple Guide

Thu, 16 May 2024 21:00:00 +0000

Hello!

Today, I want to talk about the exciting news that iPhone can now be used as a contactless payment terminal in Japan. As smartphones have become an indispensable part of our daily lives, Apple’s latest feature promises to make everyday transactions even more convenient.

iPhone Now Available as a Contactless Payment Terminal

With Apple’s latest update, iPhone can be used as a contactless payment terminal in Japan. This means retail stores, restaurants, and various other locations can easily accept cashless payments.

What is the newly announced ChatGPT-4o? Thorough explanation of how to use it

Thu, 16 May 2024 14:00:00 +0000

Hello!

Today we will discuss how to use ChatGPT-4o, a tool that utilizes the latest AI technology, ChatGPT-4o is a powerful language model developed by OpenAI and an excellent tool for a wide variety of applications. In this article, we will explain in detail the basic and applied uses of ChatGPT-4o in order to use it effectively.

What is ChatGPT-4o?

ChatGPT-4o is a language model developed based on the GPT-4 architecture for a variety of natural language processing tasks, including text generation, translation, summarization, and question answering. The model has been trained on a vast amount of data and is capable of generating natural, human-like text.

Enhanced security! Thorough explanation of how to install and use ZAP

Thu, 16 May 2024 12:00:00 +0000

Hello, I’m a new member of the OWASP ZAP team! Today I will explain in detail how to install and use ZAP (formerly known as OWASP ZAP), a tool to enhance web application security, and its advantages and disadvantages.

What is ZAP?

ZAP (Zed Attack Proxy) is an open source web application security scanner developed by OWASP (Open Web Application Security Project). It is used by developers and security professionals to check the security of web applications.

For Intermediate Minecraft Players! Things to Do When Bored and Alternative Ways to Play

Sun, 12 May 2024 15:00:00 +0000

If you’re an intermediate Minecraft player feeling a bit tired of the infinite world, and you’re looking for new adventures or ways to play, the ideas here should surely help. Why not try a Minecraft experience that’s a little different from usual?

Set Your Own Challenges

How about playing with different rules than usual? For example, try “Vegetarian Mode” — survive eating only plants without harming animals. Or embark on a “No Map Adventure” into unknown lands, enjoying the thrill of finding your way back. By imposing your own rules, a completely new Minecraft world opens up.

I Fell for the Recent Task Scam — Here Is What Happened

Sun, 12 May 2024 14:00:00 +0000

Sharing my experience of falling for a task scam, in the hope that it helps others avoid the same fate. What seemed like a simple, safe task ended up causing significant financial damage. Here is the full story in detail.

The Scam Method

The scam I encountered was deceptively simple: send screenshots of YouTube videos for payment. The scammers explained that completing this task would earn a reward. It required no special skills or significant time, so I participated without suspicion. But this was just the beginning of the trap.

For Beginners! Complete Guide to Minecraft's Basic Game Progression

Mon, 01 Apr 2024 08:00:00 +0000

Hello! The world of Minecraft you’re about to explore is brimming with infinite possibilities that spark creativity and curiosity. This game offers several modes that players can freely choose, each providing a completely different experience. In this guide, we’ll break down the basic progression of Minecraft and its various modes, especially for new players.

Survival Mode: The Absolute Basics

When starting Minecraft, most players first choose “Survival Mode.” This mode is literally about survival — players need to secure food, protect themselves from monsters, gather resources, craft tools, and build their own world.

For Absolute Beginners! Complete Guide to Minecraft Installation and Basic Controls

Thu, 21 Mar 2024 20:00:00 +0000

Hello! Today we’ll explain in detail how to install Minecraft and its basic controls, the open-world game loved around the world.

What is Minecraft?

Minecraft is an open-world game where you can freely create by stacking blocks. In this world of infinite possibilities, you can adventure as an explorer, architect, warrior, or any character you choose.

In Japan, it’s commonly abbreviated as “マイクラ” (Maikura). You can enjoy survival living or freely place blocks to build structures. It was released as a public alpha in 2009 and officially released in November 2011, around which time Jens Bergensten took over development. Since then, it has been ported to various platforms, and in 2020 it was inducted into the World Video Game Hall of Fame, among many other awards.

Let's Enjoy Gaming Together! Epic Games Launcher Installation Guide, How to Use, and Sale Info

Mon, 11 Mar 2024 20:00:00 +0000

Hello! Today we’ll explain in detail how to install and use the Epic Games Launcher, a digital distribution platform featuring many games from around the world, along with its sales information.

What is Epic Games Launcher?

Epic Games Launcher is a digital distribution platform developed by Epic Games. It hosts a large number of games, allowing you to easily play popular titles like Fortnite. Additionally, regular sales events let you purchase various games at affordable prices.

Make Your Gaming Life More Fun! How to Install and Use Steam

Mon, 11 Mar 2024 20:00:00 +0000

Hello! Today we’ll explain in detail how to install and use Steam, a digital distribution platform featuring many games from around the world.

What is Steam?

Steam is a digital distribution platform developed by Valve Corporation. It distributes thousands of games, ranging from new releases to indie games and classic titles. Community and friend features are also robust, making it useful not only for gaming but also as a communication platform.

Palworld: The Pokémon-with-Guns Survival Game Guide

Tue, 20 Feb 2024 00:00:00 +0900

Palworld: The Pokémon-with-Guns Survival Game Guide

Overview

Palworld, developed by Pocket Pair, launched into Early Access in January 2024 and became an instant phenomenon. Blending creature collection, open-world survival, third-person shooting, and base-building automation, the game has been described as “Pokémon with guns” — though it goes far deeper than that label suggests. Set across sprawling islands inhabited by over 100 species of Pals, players must gather resources, build bases, craft weapons, and fight alongside their captured creatures against hostile factions and towering boss Pals.

Essential WordPress Plugins for a Smoother Site

Sat, 10 Feb 2024 20:00:00 +0000

Hello! To run a WordPress site efficiently and provide a great reader experience, the right plugins are essential. Here are our top recommendations.

W3 Total Cache: Performance Booster

Key Features

W3 Total Cache is a comprehensive caching plugin for WordPress performance.

Page Cache: Caches pages as HTML for faster re-loading
Browser Cache: Lets returning visitors load static files from local cache
Database Cache: Caches query results for faster page generation

Why Use It?

Speed: Dramatically improves load times
SEO: Google favors faster sites in search rankings

https://wordpress.org/plugins/w3-total-cache/

Step-by-Step Guide: How to Install WordPress on Your Server

Sat, 10 Feb 2024 20:00:00 +0000

Hello! Today, we are going through the complete process of installing WordPress — the world’s most popular CMS (Content Management System).

What Is WordPress?

WordPress is a free, open-source CMS that powers everything from personal blogs to corporate websites, thanks to its ease of use and extensibility.

Installation Methods

There are two ways to use WordPress: wordpress.com (hosted) and wordpress.org (self-hosted). This guide covers the self-hosted method.

Getting Started with VS Code: Installation Guide and Basic Usage

Sun, 28 Jan 2024 20:00:00 +0000

Hello! Today, we are diving into Visual Studio Code (VS Code), the wildly popular code editor beloved by programmers. This guide covers installation and basic usage.

What Is VS Code?

VS Code is a free, open-source code editor developed by Microsoft. Lightweight yet feature-rich, it supports numerous programming languages and a vast ecosystem of extensions for customization.

Installing VS Code

Step 1: Download

Visit the official VS Code website and download the installer for your operating system (Windows, Mac, or Linux).

Kaisekukun

[Important] Urgent Claude Fable 5 and Mythos 5 Decommissioning due to U.S. Export Restrictions

Goodbye WordPress: Why and How We Migrated to Hugo Static Site Generator

1. Three Reasons We Left WordPress

Unleashing Creativity: Features and Creative Use Cases of Claude Fable

1. What makes Claude Fable Different?

Introducing Claude Mythos: The Next-Gen AI Model and How to Use It

1. What is Claude Mythos? Key Features and Innovations

Modern Web Scraping: Ethics, Legality, and Best Practices in 2026

1. Legal and Ethical Boundaries of Scraping

Comparing Figma to Code Tools for Modern UI Developers

Advanced Tuning for Vite Build and Bundling Performance

1. Code Splitting: Balancing Asset Sizes

SEO and Core Web Vitals: Demystifying and Improving INP

1. What is Interaction to Next Paint (INP)?

Building Blazing Fast APIs with Hono and Cloudflare Workers

1. Why Choose Hono and Cloudflare Workers?

PostgreSQL Performance Tuning for Web Developers

1. Designing Effective Indexes

Accelerating GitHub Actions CI/CD workflows using Caching

1. Why Cache Dependencies in CI/CD?

Developing Browser Extensions with Manifest V3

1. Primary Shifts from Manifest V2 to V3

State of Rust Web Development: Top Framework Comparison

1. Top Framework Overview

1) Axum

Tailwind CSS v4 Features and Migration Guide

1. Key Changes in Tailwind CSS v4

1) Rust-Powered “Oxide” Engine

The Benefits of Adopting PWA (Progressive Web Apps) in 2026

1. Technical Context of PWAs in 2026

Understanding CSS Subgrid Layout for Modern Design

1. What is CSS Subgrid?

Docker Container Image Security Best Practices

1. Enforce Multi-stage Builds

TypeScript 5 Features and Practical Best Practices

1. const Type Parameters

Essential Web Accessibility (WCAG) Knowledge in 2026

1. Key Guidelines Introduced in WCAG 2.2

Key Points for Performance Optimization in Next.js App Router

1. Maximize React Server Components (RSC)

Is Shared Hosting Obsolete? A Beginner's Guide to Edge Computing with Cloudflare Workers

Auto-Post WordPress Articles to Social Media (X, Bluesky) in 2026

Stop Reusing Passwords Today: The Beginner's Guide to Password Managers (2026)

The Ultimate Guide to Business Credit Cards for Freelancers in 2026

WordPress Too Slow? 5 Proven Steps to Score 90+ on PageSpeed Insights

Beyond ChatGPT: Why Local AI on Your Own PC Is the Breakthrough Trend of 2026

Slow Charging? How PD and GaN Can Cut Your Charge Time in Half

5 Essential Steps to Secure Your WordPress Site from Hackers

Can't Access Certain Sites? How to Check and Handle Cloudflare Outages (502 Errors)

Internet Slow Only at Night? You Might Need IPv6 (IPoE) — Explained Simply

Why Is It Slow Only at Night? The Toll Booth Effect

Nov 18, 2025: Massive Cloudflare Outage Took Down X, ChatGPT, Discord — What Happened?

Wi-Fi Too Slow or Not Connecting? Simple Fixes You Can Try Right Now

iPhone 17 Announced: Release Date, Pricing, and New Features Explained

Announcement, Release Date, and Pricing

Model Lineup, Sizes, and Storage

XServer VPS Launches Japan's First Completely Free VPS Plan

Free Plan Overview

Target Users and Applications

Comparison with Other Free VPS Options

My Number Card on iPhone Launches Today (June 24, 2025): What You Need to Know

Service Launch Date

Key Features and How to Use

1. Registration Process

My Number Card Now Supported on iPhone: Register in Apple Wallet from June 24

My Number Card Now Available on iPhone

Is Yu-Pack Facing an Existential Crisis? The Impact of Japan Post's Permit Revocation

Japan Post Faces Unprecedented Transport Permit Revocation Over Safety Failures

The Reality of the Safety Violations

DeepSeek: The Chinese AI Startup Facing a Storm of Controversy

1. Unauthorized Use of Google AI Data?

Nintendo Switch 2 Launches June 5! Latest Info on Price, New Features, Compatible Software

Release Date and Price

Fantasy Life i: The Girl Who Steals Time Arrives – A New Slow Life RPG's Charm and Latest Info

[Breaking] Nintendo Switch 2 × Mario Kart World Bundle: Japan Edition ¥63,980 / Launches June 5!

1. Release Date and Package Contents

[Breaking News] Nintendo Switch 2 Official Price & Release Date! Japan Edition ¥59,800, Multilingual Edition ¥79,800 / Release June 5

1. Official Price and Release Date Details

IOWN Explained: NTT's Next-Generation Optical Network and Its Future Potential

1. `const` Type Parameters