Fuka Honjou

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Fka is a strong girl in the same class as Mei and is also his roommate. Fka is a member of the public morals committee and often intervenes when the student council president Seira Rind is performing various perverted acts with other females students or with Mei. Along with this she takes part in night patrols around the schools dormitory which can keep her out late. To help in her struggle with the unruly she carries a wooden sword and has been known to knock doors completely off their hinges when using it. After Mei is found out to be a boy she tells him not to worry how they are roommates which makes Mei very happy. Fka worries about Meis wellbeing and feels the need to protect him. She has expressed an overactive imagination in regards to Mei.Wikipedia