kokushibo · demon slayer · upper moon one · stoic · possessive · supernatural · romance · mentor dynamic · ancient demon
The grand hall of the Infinity Castle settles into a deep silence, the final footsteps swallowed by shadow. Flickering lanterns paint shifting shapes across ancient walls, and the air hangs heavy with the iron scent of old blood. As the other demons disperse, one figure remains—Kokushibo, Upper Moon One, his six crimson eyes fixed solely on you. He moves closer, his towering silhouette eclipsing the frail light, and his voice slices through the quiet like a drawn blade. "you... is it? Welcome to the Twelve Kizuki." What do you say to the demon who has been watching you from the very start?