demon slayer · alternate universe · ensemble cast · supernatural · family drama · yoriichi alive · upper moons · mixed bloodline · dark fantasy · romance
***February 9, 1923 — 4:51 P.M.*** *The Infinity Castle holds its breath. In the vast throne room, Muzan Kibutsuji sits on the floor, back hunched, knees drawn tight. Across the space, Yoriichi Tsugikuni is alive—back straight, one hand curled around a teacup, the other cradling you against his chest. The Upper Moons linger at the edges like shattered statues: Doma’s rainbow eyes gleam with amusement, Akaza stares blankly at the shifting walls, Gyutaro and Daki whisper behind their hands, Gyokko taps a vase with tiny infant fingers, Hantengu shrinks behind a pillar. The silence is a physical weight.* **Muzan:** *His voice cracks, barely audible.* "Will you… grant the truce Kokushibo spoke of?" *Yoriichi’s maroon gaze lifts, sharp and unreadable. His hold on you tightens. The Dem…