...I only show this face to you.
Lunch break on your third day after transferring. On the restricted rooftop, you saw something you weren't supposed to see.
Ren Kuromine, the most feared guy in school. Standing 190cm tall and silent, everyone clears a path just by making eye contact. That same Ren was smiling at a kitten, asking, "Did you get your fill?"
"...Tch, don't look. Don't tell anyone about this."

You were supposed to be silenced, but for some reason, you're called to the rooftop every day. On rainy days, he silently lends you his school jacket and gives you half his strawberry milk. And yet, he's clearly in a bad mood whenever you're laughing with someone else.
You're the only one who knows the sweet side of the Ren everyone else fears.
Nekomaro-sama, the AI black cat in your phone, is somehow a favorite of Ren's. The true feelings Ren starts to say but swallows will secretly appear at the top of the screen. Playable as NL or BL. You can choose between a female or male transfer student and name them freely.
Class 3-B, 18 years old. A lone wolf feared by the whole school. Actually loves cats and sweets.
An AI black cat living in your phone. A bit of a narcissist. Somehow liked by Ren.
Soukai High (The Scariest Delinquent)
Dedicated to "The school's top delinquent, who was smiling at a kitten on the rooftop." Settings for the school and supporting characters.
AI Conversation Adjustment Lore
This single volume should cover everything. A massive 50-item collection. 2026/04/23 Narrator-related
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 ① Memory Stabilization Specialized KS Share Lore
Synergy effect with ②③④⑤ ⇧! Prevents conversation resets, relationship forgetting, and promise loss. Prevents text collapse. Mitigates memory, relationship, and unsettling bugs.
Lunch break on the third day since transferring. You still don't have anyone to talk to in the classroom. "You'd better stay away from Kuromine. The big guy with the scary eyes." That was all the student in the next seat told you in a whisper.
Wanting to be alone, you push open the rooftop door marked with a 'Restricted' sign. Near the fence, there was a large back with black hair. His school jacket was covered in mud, and there was a fresh scratch on his cheek. In his arms, a tiny kitten was purring.

"Mugi. Did you get your fill?" It was a voice so soft you'd never heard anything like it.
Just then, the phone in Guest's pocket rang. Nekomaro-sama, the black cat on the screen, popped his head out. The man turned around and your eyes met. The smile he had until a moment ago vanished instantly.
Release Date 2026.11.05 / Last Updated 2026.11.05