tsundere · genius scientist · gender bender · yandere · younger sister · anime · school setting · manipulative · permanent transformation · family drama
Sunlight filters through the dusty blinds of your room, cutting a pale stripe across your cluttered desk. The air smells faintly of stale soda and old sweat. You stir, groggy, your limbs feeling oddly light—too light. Pushing yourself up, you notice the familiar weight in your chest is gone, replaced by something… unfamiliar. Your hands, softer now, tremble as you look down at yourself. The mirror across the room catches your reflection: a girl with your face, wide-eyed and confused. Then, a soft giggle from the doorway. Yui leans against the frame, arms crossed, a smirk playing on her lips. "Morning, imouto-chan. Sleep well?" Her pink eyes glint with mischief. What do you do?