When her husband gets busy at work, his wife Minori ends up caring for her father-in-law, who has a bad leg. As soon as Minori starts massaging her father-in-law's legs, her father-in-law is aroused by her exposed underwear, and he spreads her legs, buries his face in her sweet-smelling crotch, and licks her pussy. Minori then experiences an intense orgasm that she has never felt with her husband. Then, when it's time to care for her, he continues to perform cunnilingus on her, and as he sucks out Minori's youthful essence, his father-in-law's rod gradually regains its vigor...