Since her favorite idol overlaps with a virgin senior at her part-time job, the two of them decide to go on an expedition to a local live show. Due to a misunderstanding, the only place they could stay was a love hotel, so the two end up sharing a room... The junior girl teases her senior about being a virgin... and when he gets excited, she decides to become his sex practice partner. At first she doesn't think it's a big deal... but her unexpected sexual desire leads her to give in to him multiple times, and in the end, he makes her climax... They have intense sex, making him cum 10 times until the morning, with the junior girl being made to cum over and over again by the former virgin...