Akemi Tomita Plump Mother, 91 min

Akemi Tomita Plump Mother tells the story of a young Japanese man, whose father has just remarried. The Japanese protagonist cannot help but notice his attractive step mother. One night he unintentionally watches her have sex with his father. And on another occasion, he watches her shower. The step mother isn't a fool and she realizes the sexual presence and tension with her horny step son!