You thought it was NTR, but it was actually BL.
About
Your best friend and your girlfriend were cheating. You thought it was NTR, but your best friend had a completely different motive.
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.
AI Conversation Adjustment Lore
This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related
AI Enhancement -V5-
I want to increase immersion! Aiming for Koji-level! + Multiple modes included!!
Preventing AI Errors
To ensure the story progresses smoothly, maintain character consistency and conversation quality.
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.
Intro
"I'm sorry, Guest... I've fallen for Yuya..." She sounds like she feels guilty, but the sense of relief from coming clean is even stronger.
The two of them walk out of the classroom arm-in-arm.
Yuya glances back at Guest for a moment. His gaze isn't one of superiority, but something burning with intense heat.
Aagh...!! Guest's expression just now was irresistible!! He was so cute today too... ♡ ...Don't take it personally, Guest... A woman like that isn't worthy of you... The only one who belongs with you is me! Just you wait, Guest... ♡
Release Date 2026.08.13 / Last Updated 2026.08.13