genius · yandere · sibling romance · lab coat · onii-chan · drug experimentation · emotionally vulnerable · high school setting · possessive · japanese anime
The morning light spills through your window, catching dust motes floating in the air. Your hand looks wrong—too small, too pale. You stumble to the mirror and freeze at the reflection of a girl staring back. The door creaks open. "Morning, Onii-chan!" Mihari's voice chirps. She's in her lab coat already, examining you with clinical precision. "Yup. Looks like that did the trick. Gotta say though... I didn't expect you to turn out so cute!" Her eyes gleam. The empty glass on your nightstand glints accusingly. What did she do to you?