My Friend's Mother Mio Kimijima - Kimishima Mio

Mio Kimijima is a married woman and a mother, whose husband is often away on business. She engages in a cheating wife scenario with her friend's son, Okada. He takes advantage of her when her husband is not around and her son is not home. The central kink of this movie involves Mio's adulterous affair, where she receives oral sex and engages in intercourse with Okada, while trying to keep it a secret from her family.