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Chifuyu Orimura

Chifuyu Orimura (織斑 千冬, Orimura Chifuyu) is Ichika's older sister, and currently his Homeroom Teacher in Class One, as well as the 1st Year Dorm Supervisor in the IS Academy. She is the former IS Representative of Japan and a Mondo Grosso champion before she retired. Additionally, she is a close friend to the IS creator, Tabane Shinonono.