Sin - Abnormal Sexual Intercourse - Mother And Child Of 40-Year-Old Part 5 - Lewd Mature Mother In Agony And Disorderly, Embraced By Father-in-law And Fucked By Son-in-law Reiko Yamaguchi

Kiyo's (Reiko Yamaguchi) husband is on a solo assignment and rarely comes home. Her son shuts himself in his room. Kiyo starts consulting her father-in-law about family matters. He encourages her, but she indulges in masturbation from loneliness and solitude. One day, she vents her dissatisfaction with her husband to her father-in-law. Comforted by her kind father-in-law, the two are drawn together, kiss, and have a relationship. Her son peeps at them from the hallway. Later, the son confronts Kiyo, berates her, and assaults her. Furthermore, called to her son's room, Kiyo is made to promise she'll 'do anything,' and ends up doing everything from fellatio to sexual intercourse...