Natsumi Ito has been visiting her father-in-law, Munio, for a year now. Initially, she would check on him as he had lost his wife, but she became captivated by his mature charm. Soon, they were more than just caring for each other; they were lovers. Natsumi enjoys the pleasures of sex with the experienced Munio, unlike her selfish husband. She is obsessed with him, and they no longer bother with contraception.
