Mio Kusakai

Mio Kusakai stands at the pinnacle of the Elite Class at Setouchi Keijo Training School. Of British descent, she is a former gold medalist in backstroke swimming, whose exceptional sense of balance and sharp analytical mind translate seamlessly into her Keijo career. Known for her composed demeanor and sisterly warmth off the court, she commands respect on it through refined technique and unshakable confidence—making her the most trusted senior figure among the main cast.