Mina is Kana's twin sister. She is also obviously half-mermaid and half-vampire. Between the two of them, Mina is more outgoing. She will do anything for fun, even if it meant causing a bit of trouble for Shido. When she comes in contact with water, it will cause her to grow, giving her the appearance of a young adult. (Original form voice range): Child-like to Medium-high voice range. (Young adult form voice range): Medium-high to Medium