Manami has started living with her aging father-in-law to take care of him. However, her father-in-law's dementia has progressed more than she expected, and he frequently causes trouble! When her impotent husband accidentally swallows an erection pill that he had been hiding, he screams, "My dick is hurting!" and Manami is forced to use her hands and mouth to administer first aid... At night, she bites into a whole pickle, and he says, "I'm thirsty! Give me some water, Manami!" and she is hit with a French kiss and cunnilingus. Even though her father-in-law is senile, his cock is still going strong, and he is aroused by Manami's young, firm body again and again! After a long absence, Manami is gradually fulfilled by her father-in-law's courtship...