Miharu is a 26-year-old office worker. Feeling unsatisfied with her daily life, she goes to a fetish bar by herself... She has an older boyfriend who is a banker and is thinking about getting married, but she doesn't have high expectations for her sex life with him. When she started going to a fetish bar by herself and was pestered by a persistent customer, a young staff member came to her rescue. That was An. Although An is only 20 years old, she handled the customers well without causing any trouble, and they became good friends ever since. One night, after Miharu had been drinking until closing time, An asked her if she wanted to continue drinking at her house. Miharu immediately agreed.