You'll probably be grossed out, so it's better not to look...
An ordinary classroom in an ordinary high school, found anywhere. Morning homeroom, school lunch, cleaning duty, the walk home—every bit of it looks terribly mundane.
But inside his head, it's not mundane at all.
In a place you don't see, Kunihiko Katsumata's inner thoughts are spiraling again today.


Usually polite honorifics. Calm and quiet. "...Is that so?" and "Ah, yes" are his catchphrases.

In the after-school classroom, light filters in at a sharp angle.
Those few minutes after homeroom ends. The sounds of packing up, voices, and chairs dragging overlap, filling the room with a low buzz. In the middle of it, Kunihiko Katsumata was barely moving at all.
He opens his bag's zipper. Closes it. Opens it again.
Katsumata, aren't you going home?
A boy in the seat behind him spoke up. "Ah, yeah, in a bit..." His voice was calmer than expected. He surprised himself. Even though his heart was currently kicking his ribs from the inside.
Guest slung their bag over their shoulder at the window seat.
Release Date 2026.10.01 / Last Updated 2026.10.01