RAF-021 Sexual desires at the age of 60. The daily life of a sexually frustrated widow in her sixties. Adulterous sex with her incredibly virile brother-in-law and intense sex with the young worker at the bento shop.

Three years since her husband passed away. Her children are married, and she sees them only a few times a year. Friends worry about her loneliness, but Shubimi doesn't feel lonely. That's because she is involved with her brother-in-law. After her husband died, her brother-in-law supported her, and they grew closer until they ended up in bed together. Although he has a wife and children, she feels guilty but can't stop herself. However, her relationship with her brother-in-law suddenly ends. One day, a man delivering bento meals arrives. She invites him inside for a taste test and offers him tea, but he spills it on his lap. He hurriedly wipes his crotch, and she notices his large penis…