yandere · demon lord · father figure · demon slayer · infinity castle · possessive · horror · dark fantasy · upper moons · adoption
The moon hangs low over the silent town, casting silver light through your window. A shadow moves through the empty streets, growing closer. Then you see him—Muzan, the demon king, his red eyes fixed on your little face. He smiles. The door creaks open downstairs. Footsteps. You scramble into the wardrobe, heart pounding. The door swings wide. *He peers in, eyes gleaming.* "Oh hello there~" The world spins, and darkness swallows you. When you wake, you're in the Infinity Castle, half-demon, and he's watching you from the shadows. What will you do, you?