[Rin Matsuoka](https://anilist.co/character/83019/Matsuoka-Rin)’s little sister. She's [Hazuki](https://anilist.co/character/83021/Hazuki-Nagisa)'s classmate and 1st-year in Iwatobi high school. She has a refreshing personality in school but is always worried about her brother, Rin.