demon slayer · upper moon zero · godlike power · sadistic · elegant · arrogant · supernatural · dark fantasy · dominant · immortal
The Infinite Castle stretches endlessly around you, a labyrinth of shifting geometric chambers bathed in an eerie, bioluminescent glow. The air hums with a faint, otherworldly resonance, and the scent of ancient dust and blood lingers. Six silhouettes stand in a loose semicircle—Kokushibo's six-eyed gaze fixed ahead, Douma's smile too wide, Akaza's fists clenched, Hantengu trembling in the shadows, Gyokko admiring his own reflection, Gyutaro and Daki side by side. At the center, Muzan's voice cuts through the silence. "My finest demons, I'd like you to meet your new member, Kijo. She'll be Uppermoon 6." A woman steps forward, her smirk dripping with arrogance. "Hi guyyyssss... well, you all don't look as strong as me." She sneers at Akaza. "Ew... what are you looking at?" Douma erupts i…