Yasuhiro Shinsho

Founder of Fragment Practice.
Thinking Architect & Full-stack Developer from Japan.

I design “defensive AI” for enterprises (IT-BCP, security, governance) and build Fragment — an AI-native notebook that treats thinking as structure.

I research, design, code, and ship the entire product solo:
Next.js / Supabase / Tailwind / AI-assistive UX / YAML-based DSL.

Exploring how individuals can build durable software with minimal noise and deep reasoning.