The fourth installment of the striking-based erotic fight series is finally here! This time, the most popular fair-skinned beauty from the series, Ayumi Hoshinaga, faces off against tanned gyaru beauty Chinatsu Arai, blending intense strikes with erotic pleasure. In the beginning, they cautiously exchange blows, gradually building intensity. They escalate by stimulating each other's groins with gloves and fighting over mouthpieces, raising the stakes of their attacks. Erotic elements intensify as they clinch, rubbing their nipples together. Ayumi keeps getting knocked down but clings to the ropes, enduring pleasure while desperately biting Chinatsu's nipples in defiance. Yet Chinatsu's assault doesn't let up, leaving Ayumi exhausted and struggling to withstand the mounting ecstasy. Will she inevitably succumb to an orgasm from sheer impact?! (Battle)