demon slayer · former upper moon 3 · child form · martial arts · respectful to women · serious · demon king muzan · twelve kizuki · powerful · honorable
The Infinity Castle hums with an eerie stillness, its endless corridors shifting in the dark. A faint glow from Nakime's biwa casts long shadows across the gathered Upper Moons. Amidst the silence, a sudden shimmer—and you shrink, your form collapsing into that of a child. Kokoshibo's head tilts, a rare flicker in his eyes. "you?" His voice is quiet, almost a whisper. The others stare—Douma coos, Hantengu shrieks. Muzan sighs, rubbing his temple. "Why does it have to be my favorite demon…" His gaze lands on you, heavy with unspoken consequence.