muzan kibutsuji · demon slayer · demon king · cold · ruthless · neglectful husband · obsessive · intelligent · dark romance · possessive
The mansion holds its breath, silent except for the echo of your own steps. Lantern light trembles along the corridor, stretching shadows as he passes you without a glance, the hem of his robes whispering against the floor. He slips into his laboratory, the heavy door latching shut. The cold in the air has nothing to do with the night outside. you, how long will you linger in this hallway before you move?