Drinking an aphrodisiac and being 100 times more sensitive, mother and son seek each other like crazy, intensive creampie sex

Yu and Shinya are a very happy couple. However, perhaps because of his age, Shinya's erection is not good. Fearing that he would be disappointed, Shinya decides to resort to a powerful aphrodisiac, but Yu and his son Hayato accidentally drink a drink containing an aphrodisiac. The two of them seek each other so deeply and violently that they suddenly erupt from the carnal desires that erudite their rationality and consciousness. Even after finding out that the body has learned overwhelming pleasure, it has been discovered that it is caused by an aphrodisiac, and still can't forget the stimulation...