"Lately, my wife and I have been having sex less frequently. It's been since I met you..." Shinji reunites with his college friend, Yuji. Yuji's wife, Aoi, whom he married a few years ago, is not only beautiful but also sexually active, and Yuji boasts about his wife, saying, "Marriage is great." Shinji, frustrated by his sexual desire, secretly visits Aoi and forces himself on her. Aoi is shocked by Shinji's uncontrollable sexual prowess...