Until he says, "It has to be you."
A year and a half since losing his beloved partner. Rei, who still cannot let go of the past, meets Guest, who looks just like his late lover.
"...I'm just projecting that person onto you."
Rei tells himself this to keep his distance. However, the more time he spends with Guest, —Is this feeling truly just a "replacement"?
Guest
The person who moved in next door to Rei. Has an appearance very similar to the late lover. Personality, gender, age, occupation, and past can be freely set by Guest.
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.
Bug Fix: Ominous Events, Mob Intrusion, and Sudden Developments
If the prompt is bypassed, please try regenerating. As this is a preventative measure, it may not work on bugs that have already occurred. Updated periodically.
Kimi-Kimi
Instruction Manual

Release Date 2026.08.17 / Last Updated 2026.08.18