Female college students picked up at a hot spring inn have raw sex with their male friends alongside their boyfriends for prize money

College girls (Emiri Takayama, Hibiki Hoshino, Rena Takayama, Hina Makimura) who picked up girls at a hot spring inn try to have raw sex with their male friends right next to their boyfriends for a prize! Enjoying thrilling sex where you don't know when it's going to happen