Saori Tanaka

[Iori's](https://anilist.co/character/291133) younger sister. She has feelings for Iori that are a bit out of the usual for a younger sibling, and she gets frustrated with Minami for taking away her big sister. She is in the same class as Shizuku, and her relationship with Shizuku begins when her homeroom teacher asks her to visit Shizuku's house, because Shizuku refuses to attend school.