His best friend's girlfriend, Waka, is a serious and quiet girl. She's an innocent girl who hasn't even had sex with her boyfriend yet, and refuses even a blowjob, only giving handjobs. One day, while browsing a call girl site, the male friend discovers a girl who looks just like Waka... He doesn't think it's possible, so he chooses her out of curiosity... She's so erotic that it's hard to believe she's his quiet best friend's girlfriend! But she has the same voice and face! At first, Waka pretends to be a different person, but as long as he keeps it a secret from his boyfriend, she even offers him a secret option to cum inside her as many times as he wants! His best friend's girlfriend is the one he's never experienced before, and he cums over and over again with her call girl service! His best friend's girlfriend?! Contrary to her private life with her boyfriend, she shows off her excellent cumming techniques!