When the father-in-law opened the door to take a bath, his daughter-in-law was taking a shower. When the father-in-law happened to see his daughter-in-law's body, he blurted out, "She's so beautiful. I'm jealous of your son..." The daughter-in-law was so happy to hear his words that she washed him and gave him a blowjob. This incident brought the two closer together. At night, after her husband was fast asleep, the daughter-in-law visited her father-in-law's room, hoping to be embraced, and the two crossed the forbidden line.