Her son is still not weaned and asks for her breast every day, so one day Ayumi comes up with a plan to get him to promise to wean her. However, habits are strange things, and Ayumi begins to feel a certain loneliness. Her lips sucking out the breast milk that won't come out by biting the areola, and sometimes her tongue crawling over the nipple... Trying to hide the growing sense of loss, Ayumi indulges in masturbation alone in her bedroom. But it doesn't end with just one time, and the days of comforting herself continue. Before Ayumi begins to want her son to suck her breasts again...