I’ll Do Anything You Ask! My Sister-in-law Gets Stuck and I Get Payback With My Piston 4

"How could you!? You tricked me!" Ren Yuki decides to stay with his married older brother while he is job searching. However, there is one issue... His brother's wife Rio's horrible personality. He endures her verbal assault until, one day, he finds her trapped in a paper sliding door. With Rio mistaken about who is on the other side, Ren decides to take advantage of this to get his payback. He lowers her underwear and starts to tease her with his tongue and her attitude grows more and more pleasant. The stark difference in Rio's behavior becomes too much for Ren, "I wasn't going to go this far, but..." unable to resist, he presses his raging tool against her dripping wet pussy...