Yui is a plain and quiet housewife. She has almost no sexual desire and does only housework... One day, a salesman shows up and recommends some underwear to her... After she puts on the underwear, her sexual preferences change more and more! Day by day, she becomes a greedy and lewd wife! In order to satisfy her desire to be penetrated deep into her vagina, the desire of this plain and sexless wife becomes fully unleashed as she becomes obsessed with lewd play, and when she wants to be penetrated to the point of going crazy, she swings her hips and writhes in ecstasy! Her sensitivity is outstanding when her sexual desire is released! & Her super greedy and lewd sex is too erotic, so be careful!