SPRD-1463 Ryoko Izumi, a mother-in-law whose son-in-law's strong libido gets the better of her

Ryoko has settled into life with her daughter and son-in-law after her husband passed. One day she catches sight of his crotch and finds herself staring at an unusually large erection. A few nights later she witnesses him masturbating. When she goes to his room for laundry and finds him asleep with another erection, she gives in and touches it, then takes it in her mouth.