幸せな家庭生活を楽しむ「マミ」だったが義父の病気が進行し、余命わずかだということが分かってしまう。余生を幸せに過ごしてもらうために介護をはじめたが、肉感的な身体と爆乳に欲情した義父に最期に1度だけとオネダリされ手コキをしてしまう。その日から始まる禁断不倫。義父のガチガチに固くなった肉棒と性欲の虜になった欲求不満妻は義父との中出し逢瀬に溺れイキ狂う！Mami enjoys a happy family life, but her father-in-law's illness progresses and she finds out that he has little time left to live. She begins caring for him so that he can spend the rest of his life happily, but her father-in-law, lusting after her voluptuous body and big tits, begs her to perform a hand job just once in her last moments. The forbidden affair begins that day. The frustrated wife is captivated by her father-in-law's hardened cock and sexual desires, and she goes wild during the Nakadashi encounter with him!
