👤 Who is Senko?
Hi, I'm Senko — a freelance engineer from Japan. I share articles on topics I'm passionate about: AI, investing, game development, mythology rankings, and more.
This blog launched in January 2024 on WordPress and migrated to a static Astro site in 2026. I've published over 385 articles.
💻 What I Do
- Web Application Development — Building and operating web applications
- Indie Game Development — Creating an action RPG with RPG Maker Bakin
- eBook Publishing — Published multiple Kindle eBooks designed with Canva
- AI Tools — Actively using ChatGPT, Claude Code, and other AI tools for work and content creation
🎮 Works
I'm developing an action RPG called "Magical Girl Mina" (built with RPG Maker Bakin) for Steam. I've also published several manga and eBooks on Kindle. See the Works page for details.
📝 Blog Topics
This blog, "Senko's Activity Log," covers the following themes (385 articles as of June 2026):
- Mythology & Religion — My personal rankings of the most powerful gods, monsters, and heroes from world mythology, religion, and legend (109 articles)
- Paradoxes — Deep dives into classic logical, philosophical, and scientific paradoxes: Zeno's Paradox, the Prisoner's Dilemma, the Fermi Paradox, and more (57 articles)
- Architecture Crash Course — A comprehensive series covering IT architecture from basics to advanced: system, software, data, security, DevOps architecture, and more (85+ articles)
- Strategic Thinking — Frameworks for sharper decision-making: game theory, prospect theory, Pareto efficiency, systems thinking, and more (16 articles)
- Game Development — Development diary of an action game built with RPG Maker Bakin, from setup to VRoid and 3D asset integration (19 articles)
- Investment — Stocks, NISA (Japan's tax-free investment account), foreign stocks, market proverbs — from basics to practice (19 articles)
- Canva — How to use Canva for beginners: AI features, video editing, manga creation, and more (11 articles)
- AI & Generative AI — How to use the latest AI tools: ChatGPT, Amazon Bedrock, Claude Code, and more (15 articles)
- Steam & Game Sales — How indie developers register, get approved, and promote games on Steam (8 articles)
- Book Reviews — Reviews of investing and business books: Buffett, The Richest Man in Babylon, Factfulness, and more (7 articles)
- Side Business & Freelance — Business registration, unemployment insurance, Amazon Associates, Kindle publishing, and more (4 articles)
🛠️ Tools & Tech
- Blog — Astro v6 + Tailwind CSS v4, hosted on AWS S3 + CloudFront
- Game Development — RPG Maker Bakin, Blender, VRoid Studio
- Design — Canva
- AI Tools — ChatGPT, Claude Code, Amazon Bedrock