Yorutsuki Hitsuuchi

The younger sister of Samatoki Hitsuuchi and a second year at Outouin Private Academy. She cares deeply for Samatoki and wishes to not have to separate from him. She also has a large collection of books that are organised in many ways, such as sorting alphabetically or by colour. Of all the genres, she seems well-versed in the mystery genre. Samatoki will often borrow a book or two from her, and Yorutsuki helps recommend books he may find interesting. Yorutsuki is rather intelligent, being in a high-level class for her year. Despite this, she tends to speak in the third person when alone with her brother. In public, she refers to herself normally. There are times where she is timid and has trouble saying things to her brother as well.