The dietician that the young of sweetfish (moon Castle) has the lecturer of the eating habits lecture for citizens. She not to be able to tell to be sociable sends serene daily life to go back and forth in a house and the workplace. Such a young of sweetfish does Isao (Yamagata) and utsuho (Segi) and the cohabitation that are the human being who is in contrast to oneself. utsuho is a graduate student, but practice the belt foolishly every day, and do the play like the child, and spend it with Isao. The young of sweetfish digests housework to take care of such two people. Young of sweetfish oneself gradually changed by various people and events in such a serene Nichijou.
