About

Hi, I'm Roki. I'm 30, a father of one, and I live in Japan.

Before I got into AI-assisted publishing, I spent years working as a personal trainer. Strength training, conditioning, and how the body actually adapts to training load are things I know well — not just from reading about them.

This site is where that background meets Japanese martial arts: kendo, judo, karate, and the dojos worth training at. I look at technique and gear with a trainer's eye, not just as a fan, and I write from Japan rather than translating what other sites already say.

These days I run most of my work from a VPS, using Claude Code and Codex as my day-to-day tools. I'm not chasing a grind — I'd rather build systems that keep working while I'm not looking.

I also post shorter updates on X:@roki_ai_affi