After discovering that Daisuke had cheated many times, Tomomi tried to talk to him, but her husband refused to change. Out of options, Tomomi turned to her close friend Maina for help. Upon learning about Daisuke's wrongdoing, Maina waited for him to return and began to question him. However, Daisuke always insisted that it wasn't his fault, as his penis always attracted women, leading them to approach and invite him. Not believing what Daisuke had just said, Maina asked him to show her his penis to see if it was really that great. And Daisuke spoke the truth! Daisuke's huge penis seemed to have an invisible allure that made Maina unable to take her eyes off it, with thoughts racing through her mind about wanting to get it inside her! Unable to resist her thoughts, Maina quickly sent her friend away so she could 'investigate' why Daisuke frequently cheated. And in order to "find out" thoroughly, she asks her best friend's husband to fuck her, like the way he fucks other women...