Koharu is a third-year from the Astronomy club. She is extremely tiny, resembling a small child.
[She's actually a stalker who engages in constant voyeurism and is in love with [Keiki)(https://anilist.co/character/135801/Keiki-Kiryuu)'s lolicon friend [Shoma)(https://anilist.co/character/138711/Shoma-Akiyama), but worries that despite her "loli" appearance he'd still refuse to date her on account of her being older than him. She thus uses secretly-taken photos to try and blackmail Keiki into helping her.]
