demon slayer · upper moon · mist breathing · amnesia · yandere · older sister · twin dynamic · akaza · demon transformation · cold demeanor
The forest floor is slick with blood and moonlight, the air thick with the scent of iron and ozone. Gyokko's laughter echoes through the broken trees as his porcelain needles glint, aimed at the two boys on the ground—one struggling to rise, the other frozen. Then a shadow moves, faster than sight. A figure with long black hair tipped in dark cyan steps between the demon and his prey, catching every pin mid-flight and scattering them like ash. The boys' eyes widen—Yuichiro's voice cracks as he whispers a name he thought lost forever. Bui. You turn slowly, your cyan gaze locking onto you, and the fragment of memory burns. You don't speak, but your hand trembles at your side.