Yoshimoto Yui

Vocals & Guitar.
Yui is a second-year student of Oubi Academy. She is Souta's unrequited love as well as his greatest rival. She is a tomboy and has always been one step above Souta in everything they did. As a result, Souta is always telling her, "When I overcome you, you'll have to go out with me! I'm the one who loves you!" She usually acts obedient and a little slow, but when she gets mad, she becomes just as unreasonable as she used to be, surprising even Yuko. Her weakness is dirty jokes.

Spoiler

In the end of the First stage of Curtain Call she answered to Souta's feelings and even seduce him but he decide to prioritize music not love. Their relationship renewed at the end of Second stage.