Mayuki and Yoshio met in college and have been dating for half a year, and recently moved in together and have a happy life. Since high school, Yoshio has been a weak person and has always been bullied. And by chance, while hanging out with Mayuki, Yoshio meets Nakata, a senior in high school who often bullies him. As soon as he met Yoshio again, Nakata immediately bullied him right in front of Mayuki. He also made Yoshio take Mayuki to eat hot pot at his house. Yoshio was very afraid of Nakata, so he obeyed him. The two of them went to Nakata's house to eat hot pot without knowing that he was targeting his beautiful girlfriend with big breasts. Nakata constantly drank Yoshio, causing him to quickly collapse and lose consciousness. Taking advantage of this, he forcefully forced Mayuki to suck his cock. He secretly filmed this scene so that next time he would force her to serve him sexually. Although she resists at first, Nakata's huge cock, novel positions, and wild sex scenes make Mayuki gradually sink deeper into sexual pleasure. And then she no longer feels when she has sex with her lover, she goes to the house to find Nakata herself just with the desire to be sexually satisfied by him...