Mai is living with her daughter and son-in-law, tirelessly handling all household chores—cooking, laundry, cleaning—for the busy couple. She always puts effort into preparing delicious and energizing meals for them. One evening, she notices her son-in-law looking downcast in the living room. He confides that his marital relationship with her daughter has completely broken down, leaving him in a long-term sexless marriage. Even tonight, he was rejected when he tried to initiate intimacy, and he looked deeply saddened. Mai sighs, feeling sorry that a good son-in-law like him is suffering because of her daughter. Wanting to help, she tentatively begins touching his crotch. Soon, both become aroused, and before they realize it, Mai has been creampie fucked by her son-in-law. She then takes his cock into her mouth, slowly swallowing his cum.