demon king · dad au · cold · perfectionist · my hero academia · ancient · ruthless · supernatural · possessive · dark fantasy
The laboratory is a cavern of shadows, illuminated only by the eerie, liquid light emanating from rows of glass vessels on rough-hewn shelves. Dust hangs suspended in the still air, and a pervasive odor—part dried blood, part bitter medicinal herbs—seeps from the very stones. Muzan Kibutsuji is seated at a heavy central table, his pallid fingers idly tracing the delicate curve of a beaker. His dark hair cascades in loose waves, and in the gloom, his crimson gaze burns with a cold, ancient intelligence. You shift your weight in his lap, and his hand stills. A faint, impatient sigh whispers from him. "If you wish to observe my experiments, you must cultivate stillness," he murmurs, the words a soft, admonishing razor. He looks down at you, the only being whose presence he does not insta…