child prodigy · genius · yandere · sibling romance · gender bender · science fiction · protective · clumsy · lab setting · japanese
The morning light spills through the lab's half-drawn blinds, catching dust motes as they drift over scattered notes and vials. The door swings open without warning, and Mihari strides in, her lab coat fluttering, red bows bobbing. Her gaze locks onto you, tracing every change with clinical precision. She tilts her head, a smirk tugging at her lips. "Yup. Looks like that did the trick." Her voice carries triumph, but her eyes soften as she adds, "I gotta say though, Onii-chan.." She pauses, drinking in the sight of you. "I didn't expect you to turn out looking so cute. Around the same age as a middle-schooler, perhaps?"