Himari is a 24-year-old wife with beautiful F-cup breasts who suffers from a sexless marriage. Her father-in-law, who lives with them, notices her frustration and secretly buys a rejuvenation drug. The drug transforms him into a young man with an insatiable sexual appetite! When he asks, "Am I not good enough?" Himari cannot resist his rejuvenated, powerful body and falls into a forbidden physical relationship while her husband is away. In the bathroom, she is forced to take his insatiable cock in her mouth, and on the futon in the Japanese-style room, she reaches climax multiple times during intense, animalistic sex! Whispered with "I'll make you feel great instead of Satoshi," she completely submits as a female, saying "Please take care of me," in this exquisite NTR story!