Student Kameda is always hanging out with his good friend Hosoda. One day, his crush Nanami comes to Kameda's house with her best friend Yui for a study session. Taking advantage of the fact that Kameda's parents are away on a trip, Hosoda, Yui, and Nanami stay the night at Kameda's house. Late that night, Hosoda shows two girls some of Kameda's erotic toys, which creates a lewd atmosphere between the four of them... Their feelings of unrequited love are distorted by the excitement of an orgy and cuckold sex. #YoroP