Yui Kodai

Yui Kodai is a student at U.A. High School training to become a Pro Hero.

Appearance
Yui has dark, shoulder-length, bob-shaped hair. She also has fair skin and an athletic build, with cerulean eyes and a neutral expression usually on her face.

Her Hero Costume consists of a simple cap on her head and a dark bodysuit with light patches on her chest, arms and legs. She wears elbow length gloves and a belt with a pouch on one side and a short skirt. She also has straps over her shoulders with pouches on either of them.

Personality
Yui is a quiet girl that rarely expresses any emotions. Some of her classmates consider her a kuudere. Despite her silent demeanor, Yui is shown to care for her classmates when they got knocked unconsciousness during the Forest Training Camp Arc.

Quirk and Abilities
Size (サイズ 'Saizu'?):[6]  Yui can make herself shrink to at least half of Bondo's size.[1]  She can also make herself larger, as seen when she tries to scare off Shoto and Katsuki.

Trivia

 * Her name contains the kanji for "small" (小), "big" (大) and "ordinary" (唯).
 * Yui likes s.
 * The crest on Yui’s hat of her Hero Costume resembles . Ultraseven was known for changing in size, much like Yui’s Quirk.