Naughty Nurses Mitsuki An

After her husband was laid off and kicked out of the company housing, Mizuki moves in with her father-in-law to support her husband's job search. One day, she catches her father-in-law washing a urine bottle in the kitchen, and he scolds her harshly. But he doesn't stop at scolding—he flips up her skirt and starts spanking her hard. Strangely, Mizuki's face shows a blissful expression, as if she's in ecstasy. Realizing his daughter-in-law's masochistic tendencies, the father-in-law makes various demands, reviving his waning sexual desire and unleashing his own lust.