Ryūkotsu

translates to “keel”—the structural spine that keeps a vessel steady in shifting waters. It’s a quiet ritual I return to before I design, or when I need to reset. Like Amaterasu’s pause before structure, Ryūkotsu creates the space where clarity can arrive. It’s not about force or intensity. It’s about tuning—getting the system aligned so the work can flow.

Ryukotsu work-in-progress by eisuke.design — early visualization of brand structure and creative flow mapping.

Testing Ground

AI tools like v0 changed how quickly I can move from idea to execution. For the first time, I can prototype interactive experiences without heavy engineering overhead. Ryūkotsu became a testing ground—a way to build, iterate, and understand these tools in practice.

Work in progress

Active Development

Currently at version 337 and refining. This is my first time prototyping at this speed—the learning curve has been steep, but clarifying.

SVG animation

Motion test

Exploring lightweight SVG animation to test how far interaction can be pushed without over-engineering. Part of the learning is understanding where code-based motion works and where it doesn’t.

Next Steps

Ryukotsu mobile view by eisuke.design — portable interface for mapping brand rhythm and creative flow.

Finishing the remaining graphics and motion details across sections. Mostly refinement now—tightening structure, pacing, and interaction.

More soon.

Related: Amaterasu

Published:january 11, 2026 | updated:January 21, 2026