True Abnormal Sex: Fifty-Year-Old Mother and Son, Part 1: Black-Nippled Mother Toyed With by Her Son's Abnormal Love and Her Tyrannical Husband - Rika Utsugi
Rika had ended up having a relationship with her son. It started half a month ago. Rika saw her unemployed son sniffing her panties and masturbating. He tried to run away, but her son hugged her, and though she resisted, she gave in to him physically. After that, even in the house where her husband was present, her son became bolder in his advances. Tormented by guilt, Rika couldn't resist her son's burning desire and kept sleeping with him. Even a year later, when her son got a job and started living alone, their relationship continued. Rika would visit her son's apartment and seek his body. Unbeknownst to her husband, the forbidden mother-son relationship went on.