Yui is a young girl with shoulder-length, bob-shaped hair, side-swept to her right with some shorter strands hanging above her eyes. She has fair skin, an athletic build, cerulean eyes, and she's usually seen wearing a neutral expression on her face. Yui is a quiet girl that rarely expresses any emotions; some of her classmates even consider her a kuudere. Despite her silent demeanor, Yui has shown to care for her classmates. Yui has the quirk to alter the size of objects that she interact