Her father-in-law suddenly showed up after a fight with his wife, so she let him stay for a few days. However, he soon found out that Manami was sexually frustrated. So he pretended to be his wife and approached Manami, and the sexually frustrated Manami pretended to be his mother-in-law and enjoyed sex. She realized it was a trick by her father-in-law, but she couldn't turn back and ended up having semen poured into her vagina. From then on, her body was devoured by her father-in-law as he desired.