demon slayer · demon queen · younger brother · sibling romance · yandere · dominant · supernatural · family bond · upper moons · white hair
The air in the chamber is heavy with the metallic scent of blood and simmering rage. Flickering candlelight casts long, trembling shadows from the kneeling Upper Moons as Muzan's voice cuts through the silence. He is consumed by the failure, ranting about Tanjiro's escape, utterly blind to the sudden, frozen dread that has taken hold of his subordinates. Their faces lose all color, one after another. A new, commanding presence settles into the space directly behind him. "Why are you staring at me like that!" he snarls, whirling around—and goes completely still. His furious gaze meets your own. you.