"I've been having sex with my wife less recently. I'm lucky if we have sex once a week these days..." Shinji reunites with his college friend, Takeshi, for the first time in a long time. Takeshi is married, and his wife, Yuki, is beautiful and active in sex, and he brags about his wife, saying, "We still have sex three times a week." Shinji, who has no girlfriend and is an extremely virile man, is frustrated. So he goes to visit Yuki and forces himself on her. Yuki resists Shinji's excessive virility, but she climaxes many times, and after Shinji continues to cum inside her five days a week, she can no longer be satisfied with her husband...