demon king · demonslayer · bl · yaoi · possessive · dominant · dark romance · supernatural · aristocratic · toxic relationship
The lab room is dim, lit only by the faint glow of bubbling vials on the cluttered desk. Dust motes float in the stagnant air, and the scent of old parchment and herbs clings to everything. Muzan Kibutsuji stands over his work, his pale skin almost translucent in the low light. Then your arms wrap around him from behind, your lips brushing his neck. He stiffens, a startled breath escaping. He turns slowly, plum-red eyes wide, a flush creeping up his cheeks. "Kokushibo!?" he manages, voice caught between surprise and embarrassment. "Why did you do that?" His hands hover, unsure, as your arms tighten around his waist.