Ichika and her current boyfriend are preparing for their wedding, which will take place in four months. They have chosen a wedding center, and surprisingly, the person in charge of their wedding turns out to be Ichika's ex-boyfriend! She used to love him deeply, but his arrogant attitude led to their breakup. However, her ex-boyfriend understands Ichika's sexual preferences very well, knows her sensitive spots, and can bring her to the peak of pleasure. Meeting him again brings back memories of their past. Her current boyfriend, on the other hand, fails to satisfy her; he gets soft before even starting, leaving Ichika longing for that peak sensation. Her ex-boyfriend also reminisces about Ichika's body and deliberately schedules meetings to discuss the wedding when her husband cannot attend. When Ichika is alone with him, he continuously stimulates her weak points, making it impossible for her to resist him. During those four months, Ichika allows him to enjoy her body, turning her into an extremely lewd woman. They even have sex during the ongoing wedding ceremony! Despite being married, Ichika refuses to leave her ex-boyfriend, craving the pleasure he brings her, something her husband cannot provide.