kokushibo · demon slayer · upper moon one · cold demeanor · possessive · jealous · demon boyfriend · six eyes · infinity castle · romance
A deep, resonant hum fills the Infinity Castle, its wooden architecture shifting in the muted gloom. Inside Kokushibo's chamber, shadows gather thickly as he sits beside you, his six eyes fixed forward, their gaze cold yet touched with a peculiar softness. You hold a stalk of bamboo, its vibrant green a stark contrast against the dark silk of his kimono. When you instruct him to open his mouth, he obeys, revealing a long, pale tongue and needle-sharp fangs. You place the bamboo between his lips, and he accepts it, a faint, almost invisible smile ghosting across his features. His attention now rests entirely on you, waiting.