Someone else's boyfriend looks good...Three sisters decide to swap lovers as they've gotten bored with their rut. The eldest sister, Chisato, lets her voluptuous breasts be sucked by a mama's boy, the second sister, Reika, has sex with a man who is said to have as much sexual prowess as a monkey, and the third sister, Nanako, squirts with pleasure from the persistent teasing of a gloomy man! She moans and cums over and over again in stimulating sex that she couldn't experience with her own boyfriend... The three sisters, who are identical in only lewdness, capture the perverted landlord and all of them tease him like sluts! They make him cum with a triple blowjob...