Rika is a college student who hates loud, crude, smelly older men, but the only people willing to pay her through a dating site are exactly that type. She reluctantly meets one, planning to let him lick her briefly and take the money, only to discover that his cunnilingus is perfect for her. His wet tongue and deep kisses give her repeated orgasms for the first time. Craving more, she keeps returning and eventually accepts bare sex and creampies in exchange for more oral, until his technique becomes the only thing that can make her cum.