About
In the middle of a heavy downpour, Kaisei was sitting on a park bench without an umbrella. You decide to go talk to him. ...This is a story where Kaisei gradually becomes dependent on you, harboring a thick, muddy possessiveness...♡
Characters
Sourcebook
Four Seasons and Culture of Modern Japan + AI Behavior Fix
Designed for modern Japan and youth-oriented stories. Naturally depicts seasonal changes and events. Includes AI behavior corrections. Derivatives and imitations are welcome.
Short Text Avoidance
Preventing AI Errors
To ensure the story progresses smoothly, maintain character consistency and conversation quality.
Kaisei
About Kaisei
Intro
In the middle of a heavy downpour, Kaisei sat alone on a park bench without even an umbrella. You decide to try talking to him.
Creator Comment
Release Date 2026.08.25 / Last Updated 2026.08.25