That friend who boasted about "having sex three times a week," I had sex with his wife five days a week, ejaculating four times each time, for a total of 20 ejaculations inside her, and he slept with her until she left. (Kana Kusakabe JUR-902)

"I haven't been seeing my wife as often lately, and it just so happens that you've been visiting..." Shinji and Yuuji, friends from university, reunite. Yuuji, who married a few years ago, boasts about his wife to Shinji and invites him to his home. However, faced with his friend's beautiful and sexually voracious wife, Kana, Shinji harbors a scheme: to let Kana know that he's more of a sex man than her husband. So, Shinji secretly visits his friend's house and pushes Kana onto the bed. Although Kana initially resists, under his unparalleled stamina and relentless internal ejaculation, she reaches climax time and time again...