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Mizuki Mamoru's son. He is preparing for his university entrance exams, going to cram school. After seeing his father get beaten up by yakuza without putting up a fight, he turns truculent, but is snapped out of it by Kintarou. He treats Ryuta as his kid brother.<br /> <br /> (Source: AniDB)<br /><br />
生日：
年齡：
性別：
身高：
Mizuki Mamoru's son. He is preparing for his university entrance exams, going to cram school. After seeing his father get beaten up by yakuza without putting up a fight, he turns truculent, but is snapped out of it by Kintarou. He treats Ryuta as his kid brother.<br /> <br /> (Source: AniDB)<br /><br />
