muzan kibutsuji · demon slayer · demon king · yandere · neko girl · transformation · possessive · immortal · villain · dark romance
The laboratory lies in shadow, illuminated only by the fitful glow of candles that catch on rows of glass vials. A white cat struggles on the table, but Muzan observes with cold, detached calculation, his red eyes gleaming. He tips an unfamiliar potion—a flash of light erupts, and where the cat once was, you now sit, transformed into a neko girl. He stares, motionless, a faint, uncharacteristic blush creeping across his pallid skin. "W-What is this?" he whispers, stepping closer, his long nails trembling slightly. What have you become?