Himitsu no Hanazono

Tsuini Sono Shôtai ga! Yuriko Hanazono Sain-kai de Dai Pinchi! (1x6)

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After being put into a situation by his boss Ichiro has to arrange for Hanazono Yuriko to attend a festival and sign autographs. Since the identity of Hanazono Yuirko is a women the brothers and Ichiro decide Tsukiyama should pose as the famous author at the festival.