一人ぼっちシリーズ、第８弾！女子部員しかいない体操部に入部することになった僕。着替えをする部室も女子と一緒、合宿に行けばお風呂も女子と一緒、そして寝る場所まで女子と一緒という状況で、僕のオチンチンは冷静でいられるわけもなく…。女子部員も部活以上にエッチなことにも興味津々な女の子ばかり。合宿に向うバスの中、体育館倉庫の中、大浴場、合宿場の寝室、体育館と、とにかく色んなところで手コキ・フェラ・セックス・乱交・２発ヌキなどでイカされまくりの僕。こんな夢のような部活にあなたも入部してみませんか？

The gymnastic club at a high school is looking for new members and one guy decides to sign up, not knowing he would be the only guy in a large group of high school girls. The poor chap wants to leave when he finds out he's the only guy there, but with some convincing by the girls, he stays. Completely nervous and feeling out of place, the girls make him feel comfortable and just like one of them, and being the only person with a penis, he finds out the girls are all after one thing. A completely funny and group video worth taking a peep at.