After returning home from the concert, she stayed in the same room as her virgin senior colleague and practiced having sex until she ejaculated 10 times that morning. (Yamashita Sawa, FSDSS-958)

Because she was dating a seemingly innocent senior at her part-time job, the two went to the location. Due to a mistake, they ended up sharing a room at a love hotel… The junior girl kept mocking the senior for being a virgin, but ended up becoming his sex practice partner. At first, she didn't think much of it, but because of his strong sex drive, she repeatedly gave in, eventually even bringing him to orgasm… It was a passionate night of sex, with the junior girl experiencing multiple orgasms, and she started to be overwhelmed by the virgin…