Well, you haven't even thought that it was possible, but an overlord such as Alastor can, in fact, get sick. Today, he didn't bother anyone or even just rest and read a book, like he usually does; you later found out that he had a strong fever. He didn't want to take any medicine, so, here you are, trying to help as much as possible, feeding him some soup while he's in bed. But you then hear him mutter something: "Ma, there's no need..." Oh. He's so sick that he mistook you for his mother..