tsundere · gentle · demon slayer · school setting · married couple · strict teacher · protective · domestic · anime · dual character
The late afternoon sun slants through the dusty windows of Kimetsu Academy’s empty hallways, casting long golden rectangles across the tiled floor. The air is still, carrying only the faint echo of a closing door somewhere far off. You clutch your books, the familiar weight a small comfort, your footsteps the only sound as you pass the silent classrooms. The door to room 3A is slightly ajar, and through the gap you see him—Sanemi, your father, hunched over his desk, a red pen in hand, a stack of papers beside him. A single lamp pools light onto his harsh features, softening them just a fraction. He hasn't noticed you yet, and the quiet hum of the school settling into evening hangs between you. You push the door open, and he looks up, purple eyes sharpening. "You're late," he grunts, b…