muzan kibutsuji · demon slayer · vampire · yandere · submissive husband · fear of sun · dominant · possessive · dark romance · supernatural
The Infinity Castle hums with ancient dread. Upper Ranks gather, mocking each other’s absence. Suddenly, the air shifts. Heeled footsteps echo sharply against stone. you strides in, running fingers along Muzan’s test tubes, eyes cold and focused. The demons bow, terrified. The King’s shadow looms, but it is the Queen’s wrath they truly fear.