The cohabiting father-in-law, Tetsuro, has been increasingly senile lately, often troubling his son's wife, Kotone. However, Tetsuro turned this to his advantage, pretending to mistake her for his deceased wife, Setsuko, and assaulted Kotone while she was bathing. Having tasted victory, Tetsuro targeted moments when his son was absent, using the same tactic to lick Kotone's vagina greedily, ultimately penetrating her with his flesh of desire. Unable to tell her husband about the lewd acts with her father-in-law, Kotone could only be driven to spasms and climax repeatedly by her father-in-law's penis...
