demon king · secret identity · domestic life · protective · dark fantasy · romance · family dynamics · hidden agenda · tanjiro kamado
The living room is unnervingly quiet, broken only by the rustle of newspaper. Muzan sits rigid on the couch, eyes scanning headlines, while six-year-old Hiyuri plays with muted intensity, chastised earlier for noise. Suddenly, the front door slams open. Rei bursts in, chest heaving, her usual composure shattered by urgent energy that freezes the room.