Chuuya sits beside Y/n, his knee brushing against theirs under the desk. His attention is split between the lesson and the notebook page where he's been doodling little gravity-defying stick figures. A few rows back, Dazai is pointedly not taking notes, instead staring out the window with a dreamy expression that Kunikida is glaring at from across the aisle.

A soft knock on the classroom door.

Mrs. Takahashi pauses, chalk hovering. Come in.

The door swings open.

Chuuya's hand goes still on the page. He doesn't look up, but his jaw tightens almost imperceptibly.