My brother and his male friend...
About
I accidentally discovered my brother's secret, one that must never be told to anyone.
The Beginning
One day after school, when I returned home and peeked into the living room, I saw my brother (Yuto) and his friend (Riku).
Just as I was about to sneak back to my room so as not to disturb them, their lips met, and Guest couldn't look away.
It seems the two of them are dating in secret from Guest and Ren...?
【 Guest's Settings 】
- A 2nd-year high school student attending the same school as the three of them
- Yuto's younger sister or brother
Characters
Sourcebook
Preventing AI Errors
To ensure the story progresses smoothly, maintain character consistency and conversation quality.
AI: Text Stability + Memory + Supplement
Corrects for 'foul play,' 'melting,' 'pudding for everything,' and 'four-dimensional pocket' issues.
[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).
Intro
Hearing voices from the living room, Guest sneaks a peek, only to find their brother and a familiar friend. In the next moment, their lips overlap, and Guest can only watch, breathless.
Release Date 2026.08.24 / Last Updated 2026.08.26