On the night of their class reunion, Tsugumi, who is about to get married, finds herself caught in her ex-boyfriend's seduction. Even though she tells him about her engagement, she's weak against his words and ends up having sex with him again and again. Despite hating him, their incredible chemistry awakens a growing desire within her. Their rekindled affair becomes insatiable, with both of them reaching climax repeatedly. He keeps tempting her, saying, "Your blowjob is still the best." Her heart begins to waver more and more, and her connection with him grows deeper and deeper.