First Japan Tour! Visiting the Seraph Brass Quintet Concert
Seraph Brass, an all-female brass quintet, made their first tour in Japan. Skipping my usual symphony, I visited their nearby and affordable concert.
Blog
My New Car Arrived! First Impressions of the Daihatsu Copen
After selling my breakdown-prone BMW convertible, I impulsively bought a Daihatsu Copen before its production ends in August 2026. Here is my first review.
Japan Cannot Be Underestimated! The Marvel of Speech Recognition Models Izanami + Kushinada + BERT
A deep dive into AIST's Japanese speech foundation models, 'Izanami' and 'Kushinada'. With BERT, they rival Whisper large-v3. We explore the benchmarks and the future of domestic AI.
OpenAI Images 2.0 Released: The Revolution of "Thinking" and "Text" in Image Generation
An in-depth look at OpenAI's gpt-image-2, highlighting its shift to an autoregressive model, the introduction of a thinking process, and perfect Japanese text rendering.
The Ideals and Realities of AI Manga Production: The New Burden of AI Direction
While AI manga has become technically feasible in 2026, creators face new challenges in directing AI models. The subtle nuances of human emotion remain a high barrier for AI tools.
blog
Life
Today is Mother's Day. On Daily Gratitude and International Women's Day
Today is Mother's Day. A 5-minute explanation of the deep history behind giving carnations, Ann Jarvis's peace movement, and the connection with International Women's Day.
The Era of AI Image Generation: Tips, Features, and Comparisons
An era where anyone can be a creator. We explain key tips for AI image generation and compare local models like Stable Diffusion 3.5 and Flux.
Choosing Car Audio in the Smartphone Era: The Navigation-Free Theory and 3 Notable Models
Do we still need expensive car navigations today? We compare Alpine, Pioneer, and Kenwood display audios to find the best unit for your needs.
Inside NVIDIA, the Heart of AI: Specs Comparison and Deep Ties to Japan
An in-depth analysis of NVIDIA, the leader of the AI revolution. Features a spec comparison from H100 to DGX Spark and its surprising history with Japan.
The Future of Welfare Changed by "Voice": AI Model Comparison and Accuracy Requirements
AI voice recognition changes caregiving. Revealing benchmark results showing the high accuracy of OpenAI Whisper and the challenges of Kotoba-Whisper.
Young People's Choice to 'Not Drink': How the Shift Away from Alcohol is Changing Socializing
The shift away from alcohol among youth is accelerating. We explore the rise of 'sober curious' lifestyles and how socializing is changing to focus on experiences rather than getting drunk.
Understanding Liver Function: Decoding Medical Exam Results and Lifestyle Tips
Prevent health risks by decoding AST, ALT, and γ-GTP test numbers. Learn about the latest MASLD findings and daily habits to maintain a healthy liver.
blog
Health
The Terror and Prevention of Urinary Stones: From Intense Pain to the Impact of Coffee
An in-depth guide on urinary stones, covering symptoms, risk factors, prevention methods, the impact of coffee, and surgery cost estimates.
Challenge the Sea! Boat License Guide: From Types to Maintenance Costs
A complete guide to getting a boat license in 2026, explaining license types, navigation ranges, maintenance costs, and mooring fees.
Eliminating Information Leakage Risks: Anonymization Unique to Local LLMs
Eliminate the risk of sending PII to the cloud. We explain practical methods for utilizing AI while protecting privacy via a local LLM '3-stage anonymization pipeline'.
The Forefront of Local LLMs in 2026: Will Artificial Intelligence Divide into Specialists?
An overview of local LLM trends as of April 2026. Learn about MoE architectures, Japanese reasoning models, and memory efficiency technologies that run on consumer PCs.
Extreme Customization of Strapi 5: Integrating Quill and Multi-Tenant Architecture
Strapi 5 is an excellent headless CMS, but I customized it heavily for kuro.boo, replacing Lexical with Quill and adding database schema-based multi-tenancy.
Nemophila Kanto Best 3: Stunning Blue Flower Fields!
April brings Nemophila! Here is a guide to the top 3 nemophila spots in the Kanto region, starting with the legendary Hitachi Seaside Park.
blog
Life
2026 Cheap Car Insurance Rankings! An Actual Estimate Comparison
Where can you find the cheapest car insurance? Presenting the 2026 cheap car insurance rankings with real figures from a comparison estimate for a Copen.
Bluesky Official Events in Tokyo! Meetup and Hackathon
Join the user exchange 'Meetup in Tokyo Vol.4' on April 13 and the developer hackathon on April 18 in Osaki, Tokyo. Rare opportunities to experience the decentralized social media forefront!
A 3-Minute Guide to Getting Started with BlueSky
A must-see for anyone starting Bluesky! We cover everything from account creation steps to precautions for enjoying it safely and how it compares to X and Threads.
blog
Technology
Explaining the Power of the Cloudflare Pages Free Tier
Uncapped bandwidth, unlimited sites, and 100 custom domains are completely free. Comparison with Vercel and Netlify, deployment methods, and the Pages/Workers integration.
blog
Media
Why Recent Idol Anime Are Surprisingly Entertaining
An exploration of how Japanese idol and anime cultures collaborate to create engaging works that appeal not just to kids, but to adults who enjoy deeper themes.
Even After Changing the Name, WECARS was Still BIG MOTOR.
I sold my car using a bulk assessment site for the first time. I want to share my personal thoughts, realizing that the site had issues and WECARS hasn't changed at all.
blog
Health
Around-Sixties Concerns About High Blood Pressure
Reaching the around-sixties age group brings various health concerns. Let's delve into what high blood pressure actually is and explore its causes and remedies.
blog
Technology
One Year Using NTT Flets Hikari Cross
A review of using 10G NTT Flets Hikari Cross alongside 2.5G Nuro Hikari for a year, outlining the hardware requirements and performance of a 10G network.
Is Kuroto's Beloved Car Finally Scrapped? Explaining the Key Points
I decided to part with my long-time BMW 335i Cabriolet after a recent overheat. Since it's a 2007 model, 20 years of service makes it understandable, but...
ChatGPT Features and Comparison with Competitors
A profile of ChatGPT, the driving force behind the AI boom, detailing its industry leadership and key investments from Microsoft and SoftBank.
blog
AI
Key Features and Points of Claude Code
An overview of Claude Code's strengths and weaknesses. Despite heavy token usage and autonomous behavior, its coding ability outpaces competitors.
blog
Media
Introducing Games I Bought in the Steam Spring Sale 2026
Major Steam sales happen twice a year, in spring and winter. Although there were no big highlights in this spring sale, I bought many games and will introduce three of them here.