Mayuki and Yoshio met during college and have been dating for half a year. Recently, they moved in together and are living a happy life. Ever since high school, Yoshio has been a weak person and was often bullied. By chance, while hanging out with Mayuki, Yoshio ran into Nakata, a senior from high school who frequently bullied him. As soon as Nakata saw Yoshio, he immediately began to bully him right in front of Mayuki. He also forced Yoshio to take Mayuki to eat hot pot at his place. Yoshio was very afraid of Nakata, so he had to obey him. Both of them went to Nakata's house to eat hot pot without realizing that he had set his sights on Yoshio's beautiful, well-endowed girlfriend. Nakata continuously got Yoshio drunk, causing him to quickly collapse and lose consciousness. Taking advantage of this situation, he forcefully coerced Mayuki into performing oral sex on him. He secretly recorded this scene to force her to provide sexual services to him in the future. 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...