The ultimate butt work that focuses completely on the butt! Mr. Kuroki, who was on a hot spring trip with his wife, found her ass so attractive that he decided to stare at it. I can't hold back anymore, and when my girlfriend's husband isn't around, I attack her ass! Kuroki, who had been without sex, was blown away by the wild play, and accepted all of the man's perverted butt-loving play, ending up climaxing over and over again...