ごっくんアスリート！ 巨乳メダリストのおしゃぶり強化合宿

Kazuki sister is a world class athlete, her secret is his sperm according to her. Going to elite athlete training center she drags him along as new manager. He soon finds out the other athletes are struggling for number 1 spot in respective sports and willing to do anything to get leg up as well.