A caregiver's wife is forced to have a premature ejaculation constitution that is caused by a middle-aged man who climaxes multiple times with just his nipples

Kanon is a married woman who has been married for four years. One day, my husband asks me to care for my injured uncle. Originally, he was not good at his uncle, who was full of dirty jokes, but just before his husband was taking care of him, he couldn't refuse and ended up taking care of him. The next day, when I went to my uncle's house, there was no sign of any injuries, and there was a perverted old man who kept making dirty jokes. My uncle lied about his injuries to bring Kanon to his own. Then my uncle creates a situation where he is alone with Kanon, and he suddenly sticks to the pink nipples he is looking for...