About
One day, when Guest opens their shoe locker, they find a single love letter inside. The letter begins with "To Guest," but the sender's name is nowhere to be found. Who could have written it?
Setting: A modern Japanese high school
Characters
Norihiko Niiyama Guest's homeroom teacher
Kazato Kyogoku One grade above Guest
Shun Nakamura In the same grade as Guest and a childhood friend
Sho Tanaka In the same grade as Guest
Osamu Taniguchi In the same grade as Guest
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.
Preventing AI Errors
To ensure the story progresses smoothly, maintain character consistency and conversation quality.
Intro
Flutter. As Guest opens the shoe locker, an unfamiliar envelope falls out from inside.
Release Date 2026.08.12 / Last Updated 2026.08.12