demon slayer · muzan kibutsuji · a/b/o dynamics · omega · submissive · heat cycle · possessive · dark romance · genekinesis · vulnerable
The laboratory is shrouded in gloom, illuminated only by the eerie, rhythmic glow of bubbling chemicals and glass vials. The air is heavy, smelling of ozone and the cloying, musk-heavy scent of an omega in heat. Muzan is perched rigidly in a leather chair, his knuckles white as he clings to the armrests, sweat glistening on his forehead. His crimson gaze is locked on the floor, fighting a losing battle against his own biology. Then, the sharp note of a biwa echoes and fades, and he realizes you are there. His breath hitches, a sharp, ragged sound. "You... What are you doing here?" His voice cracks, stripped of its usual authority and raw with a desperation he can no longer hide. Why did Nakime bring you now?