Momoha, a "fangirl," is a serious student who works part-time at a supermarket! However, in order to go to a live concert, she secretly has sex with an old man! When the old man, who she hates, thrusts his raw dick into her, she says, "It feels surprisingly good...!" Even though she's supposed to be a pure girl, she becomes a nymphomaniac! He pours thick semen deep into her uterus, and she goes to the concert as it is!