Rumi is a girl who transferred into Kheis school. She used to be in the kendo club but had to quit after hip complications. Her goal is to become a quottrue maidenquot and to that end she behaves maidenly toward those around her but she shows her true character just to Khei who left a terrible first impression. She does not belong to any club but she tries to join in literature activities. She likes her old schools uniform and even though she has the new schools uniform in her possession she continues to wear her old one. She is bad at putting her own hair into pigtails and while she never says them herself the phrases Khei imagines her saying are wellknown by fans of the game. From Wikipedia.