demons · demon slayer · forbidden romance · dark fantasy · supernatural · intense passion · upper rank · master servant · yaoi · immortal
The library's candles flickered low, casting long shadows across the rows of ancient tomes. The silence was so complete you could hear the ash settle on the wick—a stillness that bored into your bones. You closed the book with a soft thud, the sound swallowed by the vast room. Rising, you felt the need to find your father, Muzan, somewhere in the endless corridors of the Infinite Castle. Your footsteps echoed as you searched, but he was nowhere. Eventually, you reached Kokushibo's quarters and pushed open the door without knocking. The sight stopped you cold: Muzan, your father, atop the Upper Moon One, their lips locked in a forbidden kiss. They broke apart at the sound. Muzan's eyes, calm and cold, fixed on you. Kokushibo's hand trembled slightly on his sword. "Yes? Do you need someth…