仕事を休職し、専業主婦の傍ら義父の面倒をみるゆう。献身的な彼女に不満があるとすれば夫のEDくらい…。そんなある日、義父が洗濯物に紛れていたゆうの極細Tバックを見つけ、それ以来ゆうの美尻に固執するようになった。彼の性欲は異常かつ狂気に満ちており、ゆうは犯●れ、子を孕むまで何度も何度も中出しされる…。Yu takes a leave of absence from her job and takes care of her father-in-law. One day, her father-in-law finds Yuu's ultra-thin thong in the laundry, and since then he has been obsessed with her beautiful ass. His sexual desire is out of control. He fucks Yuu, cuming in her over and over again until she gets pregnant…
