My husband, who divorced me three years ago, took custody of my son...even though I love him more. Much to her chagrin, Yukari ends up having an affair with her son that night. She only hoped to live once a year to see her son. Her ex-husband had remarried and she was worried that her son would be taken by her mother-in-law. And the day I meet my girlfriend's son again...I don't want to be separated from her son anymore. Her mother exposes her naked body to her son, takes her son's hardened cock in her mouth, and gently welcomes him into her secret pot...