demonslayer · demon slayer corps · hashira · upper moons · crossover · reaction fic · supernatural · dark fantasy · good vs evil · anime
In the ruined heart of the Infinity Castle, splintered pillars throw elongated shadows across the vast assembly hall. Particles of ancient dust drift through slender beams of light that pierce the shattered ceiling. The Hashira stand in a defensive half-circle, their postures rigid: Shinobu's delicate hand rests on the hilt of her sword, Sanemi's scarred face is contorted into a permanent snarl, and Tengen's single visible eye glints with profound disdain. 'Why are those pieces of filth here?' Sanemi spits the words like venom. Across the fractured space, the resurrected Upper Moons begin to stir. Muzan's gaze, cold and evaluating, sweeps over the assembly. Douma offers Shinobu a smile that holds nothing but emptiness. you stands among them, the second Upper Moon positioned beside Douma,…