Update on the Urinary Stones: The 3rd Report
Black Rabbit reports on the current status of the urinary stone based on a new CT scan. Exploring the three major hurdles and the real threat of bacterial infection.
Blog
Technique Contest: Event Info and Highlights of Akita Kanto Festival 2026
Akita Kanto Festival (Aug 3-6): giant bamboo poles with candles. Discover technique, schedule, and access info.
Traditional Beauty: Event Info and Highlights of Sendai Tanabata Festival 2026
Tohoku's Big Three Festival, Sendai Tanabata Festival, is held on Aug 6-8. Discover giant paper decorations, schedule, and fireworks info.
Bruno Mars Japan Tour Celebration: Introducing His Hit Songs with YouTube Links
Although Kuroto unfortunately couldn't get tickets, Bruno Mars is holding a 12-show dome tour in Japan in January 2027. We introduce his hit songs with YouTube links.
Aomori Nebuta Festival 2026: History, Highlights & Access Guide
Experience the legendary Aomori Nebuta Festival on August 2-7, 2026. Discover massive illuminated warrior floats, dynamic Haneto dancers, and essential travel and ticket information.
I Want to Travel Around Japan Before I Die!
Many dream of traveling around Japan, but what does it mean? Is it driving along the coast or exploring each region? This article turns my dream of a lifetime Japan trip into reality.
July 2026 Edition! Summary of the Latest LLM Coding Capability Comparison
A summary of the latest LLM coding capabilities as of July 2026, including model scores like Claude Fable 5, ideal VRAM sizes for local deployment, recommended hardware, and costs.
Mt. Fuji Opening: Hiking Routes & History of Asama Faith
Mt. Fuji opens in July for climbing. Compare 4 routes. Discover the history of Asama Faith (worship born from volcano fear), the 1,300 Asama shrines, and the Hatsuyamamairi ceremony for babies.
blog
Health
[My Kidney Stone Story, Part 2] Three Months In: The Culprit Was Coffee on an Empty Stomach — How Are the Milk and Jumping Tactics Going?
Month three with a 6–8mm calcium oxalate stone. The culprit? Coffee on an empty stomach. Against a stone that moved only 2cm in a month: morning milk, jumping on the spot, and massage.
blog
Software
Strapi vs Ghost vs Directus vs KuroCMS: OSS Headless CMS Comparison (2026)
Strapi, Ghost, Directus, and KuroCMS compared: tech stacks, running costs, AI/MCP integration, and editors — an honest comparison by KuroCMS's developer, strengths and weaknesses included.
Finally Released! Development of a New Headless CMS Vol. 3
The Cloudflare-native ultra-fast headless CMS "KuroCMS" is officially released. Features a PC-free web installer, community templates, AI multilingual systems, and easy dashboard updates.
Gemini CLI Deprecated Today! Complete Steps for Migrating to the Successor agy
Google retired Gemini CLI on June 18 for Antigravity CLI (agy). Here is the guide to migration, uninstallation, key features, and alternative tools.
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.
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
[My Kidney Stone Story lol] From Sunday's Agony to Everything I Seriously Researched: Causes, Prevention, and Surgery Costs
One Sunday, writhing agony revealed a 6–8mm urinary stone. What the patient himself dug up: the pain's true cause, who's at risk, coffee's role, and real surgery costs — all told as a personal story.
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.