Yuu is an university student. He looks outwardly normal, but he loves cosplay. His dream is to get a girlfriend and to enjoy doing H-cosplay with her. One day, when he wakes up, he finds two beautiful girls giving him a blowjob.... He doesn't know their names.... He doesn't remember their faces.... "Who are they...?" He asks them their names and one of them says, "Arte. My name is Arte." and the other girl says, "I'm Toria." "Well, listen. we are magic girls from a magic world." "What? Magic girls...?" "Hey, can you hear me?" Like this, Yuu starts living together with them....