Yoshie Ohta, 53, has been married for 28 years. After her husband and son go to work, she stays home with her pet dog "Pudding", but once she's done with the housework, it's always masturbation time. Her son bought her a tablet so she could watch movies, but all that's on the screen are obscene images. One day, Yoshie, a promiscuous masturbation maniac, started to feel bored, and the words "butter dog" popped into her head... This isn't good! She thought to herself, and applied for the contest.