Yui is a wife who lives with her husband in an old housing complex. Next door, an elderly man named Takuro lives alone, and Yui, who was close to her grandfather, willingly takes care of him. One day, while she is cooking with Takuro, he suddenly hugs her. He says that she looks like his dead wife, spreads her legs, and buries his face between Yui legs. Yui desperately resists, but Yui body responds to Takuro's skillful tongue technique. Then, even with her husband nearby, Takuro greedily desires cunnilingus, and gets his cock, which should not be erect, erect...