Morishita, who runs a sports gym, was apparently active as a gym trainer in her 20s. After getting married and having children, she quit her job as a trainer and devoted herself to running a business, and now her daughter is a fitness trainer. However, even though her work is going well, her relationship with her husband, who is constantly cheating on her, seems to have cooled, so this time she let loose her extraordinary sexual desire to relieve her daily frustrations and have some fun.