JAV24

In order to find out the reason why his son and his wife are having trouble conceiving a child, his father-in-law peeks into their lovemaking... and discovers that his son is having very poor sexual intercourse! The father-in-law becomes enraged and uses Kanna's body to give the couple a "sex lecture". Kanna is easily brought to climax by the cunning skills of her father-in-law, who knows the female body inside and out. The couple learns how to make a baby, but Kanna's disgusting body turns her father-in-law on. He gets more and more extreme in his instruction, and he gets close to Kanna, giving her intense cunnilingus and forcing her to have sex with him. Kanna is gradually taken in by her father-in-law's intense and intimate sex, which is different from that of her young husband....