Takashi and Ken are best friends. One day, Takashi is invited to Ken's apartment where he lives with his girlfriend, Mito. Takashi gets drunk and falls asleep, but when he wakes up, he sees Mito stepping on Ken's face under the bed! Even after leaving the room, Takashi's curiosity gets the better of him, and he peeks inside to find Ken and Mito engaged in reverse anal sex... Later, when Takashi is called back to their room while Ken is out, he's seduced by Mito... His best friend's girlfriend gives him non-stop anal pleasure, driving him wild!