STARS-529 A student who deliberately repeats a grade just to be with her makes the swimming club advisor teacher, Aoki Momo, feel too good when he ejaculates inside her, preventing her from moving forward with marrying her fiancée (colleague)

Aoki, a school teacher and adviser to the swimming club, is attacked by a student, Yuki, who quit the athlete due to an injury, and gradually begins to forgive his body. Aoki has a fiancée named Kagawa, who is his colleague, but he cannot dissolve her relationship with Yuki. Every time Yuki's semen was spit out inside her, her unknown pleasure attacked her, and her well-trained beautiful body gradually drifted away from her fiancée...