Des:Aoki, a high school teacher and swimming club advisor, is attacked violently by his student Yuki, who quit the sport due to an injury, and they gradually become forgiving of him. Aoki has a fiancée named Kagawa, his colleague, but he is unable to resolve his relationship with her Yuki. Every time Yukis semen was ejected inside her, an unknown pleasure washed over her, and her beautiful, trained body gradually moved away from her fiancé...