About Me

Hidekazu Kubota (sosuisen)

• Ph.D. in Engineering
• Independent developer

Interests

• Interaction design
• Note-taking
• Computer graphics

Links

• X: https://x.com/sosuisen_net/
• GitHub: https://github.com/sosuisen/
• Medium: https://medium.com/@hidekazu.kubota

Recent Awards

• Won the Agent.ai Challenge (2025) with my entry, Mindmap Generator
• Won the Payara Hackathon – Generative AI on Jakarta EE (2024)
• Won the Jakarta EE Media & Community Challenge (2024)

What does 'sosuisen' mean?

A canal is called 'sosui (疏水)' in Japanese, and a line is called 'sen (線)'. I love the Lake Biwa Canal in Kyoto and the line of water flowing through it. The name 'sosuisen' comes from that line of water.

Characters

All the characters were drawn by me.

Most of the graphics on this site, such as the shape of Puddle and the icons, are computed by an old-fashioned, deterministic algorithm.