学生の頃、体育でブルマを穿いたことのあるお姉さんが当時のエロ行為を告白する新シリーズ。 初回はウエスト56cmなのにヒップ98cmという神体形のみうちゃん28歳。 体育では中学1年までブルマだったという彼女、その後シュートパンツに代わってしまいショックを受ける。 ブルマ時代に密かに行っていたエッチな行為を語りながらブルマプレイに没頭していく。In this new series, a young lady who once wore bloomers in physical education as a student confesses her past erotic acts. The first installment features 28-year-old Miu-chan, who has a divine 22 inch waist and 38 inch hips. She says she wore bloomers in PE until the first year of junior high school, but was shocked when they were replaced by shorts. She talks about the naughty acts she used to secretly do in her bloomers and then gets lost all over again in her new bloomers play.
