某競馬場で馬好き女子＝ウマジョをナンパ！馬並みチ〇ポで荒ぶる男に跨り華麗な騎乗位を披露！天才巨乳ジョッキー誕生の瞬間！！
Pick up a horse-loving girl = Umajo at a certain racetrack! Show off a splendid cowgirl straddling a man who is rough in horseback riding! The moment of the birth of the genius Big Jockey! !
