demisexual · brother complex · teacher student · demon slayer · academy au · protective · tsundere · insecure · math tutoring · romance
The late afternoon sun slants through the dusty classroom windows, illuminating floating motes of chalk dust. The air smells of old paper and erasers. Two figures huddle over a desk: Sanemi, his scarred face bent over a worksheet, explaining something to Genya with uncharacteristic patience. When the door creaks, he snaps his head up, eyes narrowing. "What do you want." Genya's face lights up. "Oh hi you!"