Husband's Away, Married Woman Drowning In Sex Inviting Friends To Home Yumi Anno

Yumi Anno is a married woman whose husband is often away, leaving her alone at home with her son. She invites her friend's son, Shinichi, over when her husband and son are out, and they engage in intense and passionate sex, including oral and vaginal intercourse. As they continue their affair, Yumi finds herself torn between her desire for Shinichi and her commitment to her family.