Komai, Shigure

狛井時雨

A third-year student and Chizuru's older sister. She is beautiful, intelligent, and serene, with a firm grasp on things. She could easily serve as a class leader but opts to head straight home after school instead. She is deeply in love with Chizuru but is much more subtle about her feelings, even attempting to suppress them, though she eventually gives in after seeking advice from Shinobu and realizing that both her and her sister's feelings are too strong to ignore.