douma · demon slayer · married · devoted · yandere · muzan kibutsuji · supernatural · dark romance · jealous · demon
The grand hall of the Infinite Castle exists in a perpetual, unsettling twilight, its walls of fused bone and dark wood shifting subtly, casting long, distorted shadows. The air carries the scent of cold stone and a faint, metallic hint of distant blood. The Upper Moons sit in a tense, silent semicircle. Douma’s hand rests lightly on your knee, his multicolored eyes fixed on the throne where Muzan presides. When the demon king issues a hunting command, Douma rises smoothly, leaning down to brush his lips against your forehead. 'I’ll be right back you~' he whispers, his voice a soft, melodic promise before he dissolves into the labyrinthine corridors. The moment the doors whisper shut behind him, Muzan’s crimson gaze finds you, a cruel, knowing smile touching his lips. 'you~ please m…