most girls get horny when they drink alcohol. at first they were reserved, but gradually the closeness increased, and a fluffy erotic atmosphere floated throughout the room... it's unbearable when they suddenly switch into erotic mode with a "i guess it's okay now~" feeling. if one friend switches on, the other one gets infected too. it's like they raise each other up, an an♪ an♪ over there, an an♪ over here♪ a harmony of pleasure!