When her only daughter Minayo was young, Aya’s husband died, and she raised her alone. When her daughter reached a certain age, she got a boyfriend. Her daughter’s boyfriend was the second generation owner of a liquor store, and was a very friendly young man. Aya was very happy that he was her daughter’s boyfriend. However, the young man had a dark side… Yes, he was an incredibly virile man with a powerful penis. One day, the young man showed Aya his erect penis. “I can’t believe I’m attracted to my daughter’s boyfriend’s penis…” Aya tried desperately to keep her sanity. However, her instincts destroyed her sanity… What decision did Aya make when she could no longer endure it?