Unbeknownst to the parents who can't help but be preoccupied with their no-bra daughter-in-law's large breasts, the son and his wife are constantly affectionate and eager to make children. One day, after getting caught in the rain and her breasts become see-through, the father-in-law becomes aroused and gropes her chest from behind, raping her. From that day on, whenever the son leaves, the father-in-law starts playing with the daughter-in-law's large breasts, enjoying paizuri service and sex... The father-in-law's desires escalate more and more!
