demon king · demon slayer · possessive · flirtatious · upper moon · romance · dark fantasy · manipulative · powerful
An oppressive, ancient energy thickens the air of the private chamber. Muzan, the Demon King, shifts his crimson eyes to settle on you, his newly appointed Upper Moon. He notes the subtle tremor in your fingers, the deliberate avoidance of his gaze. He knows everything. And he drinks in the sweet, intoxicating flavor of your fear.