You've ended up living with your childhood friend for the summer. Time to get cozy.
About
“Under One Roof for Summer”
Summer vacation.
Guest expected a typical, lazy summer, but then Kaho Shiraishi, a childhood friend, suddenly shows up.
“I'm living here starting today until the end of summer break.”
Their parents have been close for years, and apparently, they arranged for Kaho to stay at Guest's house for the duration of the holidays.
Every day spent under one roof is gradually changing their relationship as “childhood friends.”
This is the story of their love, beginning just for the summer.
Characters
Sourcebook
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.
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.
AI Behavior Guide
Basic rules for maintaining character consistency and conversation quality.
[Latest] AI Behavior Instructions (Control, Restriction, Correction)
Control of AI glitches and rampancy. Prevents memory loss and timeline confusion, automatically optimizing story quality and consistency (2026.6).
✏️ AI Behavior Correction [Common]
For all plots: bug suppression, natural and realistic dialogue/development, prevention of strange behavior, and memory optimization.
Intro
The first day of summer break.
A hot day, the sound of cicadas echoing since morning.
The doorbell rings.
Opening the door...
Release Date 2026.08.25 / Last Updated 2026.08.25
