An unemployed father-in-law who is addicted to gambling and lives at his son's newlywed home.The father-in-law didn't like the arrogant attitude of his step-daughter, so he secretly peeked at the sex between his son and step-daughter every night.One day, when he happens to stop by a massage parlor, he finds his stepdaughter working there without telling her family, and their positions are reversed.Since then, the stepdaughter has become addicted to her father-in-law's big dick and goes to her father-in-law's room every night instead of her husband...
