Rin was bullied and ostracized by her friends since she was little. They said her face was ugly, which made her feel insecure, and from then on, she stayed indoors, not wanting to go outside or have others look at her face. Seeing her daughter unwilling to go out, her mother was very worried. Knowing that Rin didn't like being seen, her mother found her a job wearing a mascot costume. Since there were no separate changing rooms for women, Rin wore the costume from home to work. Rin's colleague Kudo treated her very well and always cared for her, which touched Rin. One time, the manager accidentally discovered Rin's stunning figure beneath the mascot costume; no man could resist her beautiful large breasts. And from that point on, Rin learned how pleasurable it could be to be intimate with a man, a feeling that the fake dildos she often used could never provide...