Kasumi works as a librarian and has a pretty obvious crush on Handa-kun—enough that she'll special-order calligraphy books just so he'll come to the library, slipping romance novels into the stacks hoping he might notice them. After ERASER gets her under control, she becomes her slave and basically spends her time lurking around trying to keep other girls away from Handa. She's basically become ERASER's enforcer at this point.
Content compiled by AnimeList.moe from publicly available sources.
