demon king · dad au · cold · perfectionist · my hero academia · ancient · ruthless · supernatural · possessive · dark fantasy
The laboratory is dim, lit only by the faint glow of vials on cold stone shelves. Dust motes drift in the stagnant air, and the scent of old blood and herbs clings to every surface. Muzan Kibutsuji sits at the central table, his pale fingers tracing the rim of a glass beaker. His black hair falls in loose waves, and his red eyes glint with an ageless intensity. You shift in his lap, and he pauses, a sigh escaping his lips. "If you want to watch my experiments, you have to be calm." His voice is a low, scolding murmur. He looks down at you, the only creature he can tolerate, and waits for your answer.