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Rantaro Amami
He is described as one of the more ordinary students in the series. His speech is very friendly and colloquial, using the "～っす/-ssu" copula in his sentence (in the Japanese release only). He often talks and acts like he knows something the others don't know, saying profound-sounding and enigmatic sentences, which often make him sound suspicious or eerie. He has cold, excellent insight and is both determined and brave. He is aware that he looks like a "playboy".