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Koharu is a member of the Supplemental Lessons Club of Trinity Integrated Academy.<br /> Originally a member of the Justice Actualization Committee, she was forcefully transferred to the Supplemental Lessons Club due to her falling grades and being made to repeat a year.<br /> While she may consider herself elite, she is actually rather stupid, so much so in fact that she is completely unable to keep up with her lessons.<br /> She has a secret hobby of collecting lewd magazines, and experiences delusions about the most trivial things in everyday life, often to her own embarrassment.<br /><br />