A friend of mine boasted that he had sex with his wife three days a week, but I ended up ejaculating inside her four times a week, a total of 20 times. He really cheated on his wife. —Yuki Takeuchi JUR-367

"Lately, I've been having sex with my wife less often. Once a week is already pretty good..." Takeshi, a friend from university, and Shinji, whom he hasn't seen in a long time, are reunited. Takeshi is married to Yuki, a beautiful woman who seems to enjoy nighttime sex and proudly boasts, "I still have sex three times a week." Shinji, single and incredibly handsome, feels resentful. Then, he visits Yuki and forces himself on her. Because Shinji is so exceptional, Yuki, despite resisting, experiences multiple orgasms. And after being penetrated by Shinji five days a week, Yuki finally becomes dissatisfied with her husband...