SQIS-106 - My son's young wife, the scent of a female permeates the house, it's unbearable.

The old father, thinking his heart is free, indulges in lewd fantasies with his son's wife. His lust knows no bounds, and he eventually reaches for his daughter-in-law's underwear. Unfortunately, he is caught in the act by his daughter-in-law and becomes dejected. He feels embarrassed, but as if stimulated by the old man's lust, his daughter-in-law herself feels a strange excitement. And then, his healthy son collapses and is hospitalized. The father-in-law and daughter-in-law… at this unique opportunity, the two end up together. (From Episode 1)