Shiori Idabashi

Height: 159 cm

Idabashi has a much younger brother, who suffered from a serious illness when he was young. In elementary school, she would often accompany him to the hospital and spend a long time waiting for him to be seen. She would read whatever books were available in the waiting room, which sparked her interest in literature. Her brother is doing fine now, and Idabashi continues to read whatever books happen to catch her fancy. Prior to the first chapter of this story, she never had much interest in Mayumura... but of course, that's all changed.

(Source: the manga's character introductions)