The daughter-in-law, Shinako, who takes care of her father-in-law, has become slightly plump and is advised to diet by him. 'If you eat the meals instead,' she accepts, but in front of Shinako's lewd figure, her father-in-law's guidance goes astray! After groping her sweaty breasts and hips, he says, 'Sex is the best method!' and ends up inserting his old man dick...
