Is it possible for the male protagonist in the novel I Am a Demon Sword to become a human? I'm not too sure about the details because this is a novel from a long time ago. But generally speaking, in novels, the male protagonist's transformation into a human would usually appear at the climax or the ending of the story. This could increase the attraction of the story and the complexity of the plot. If you want to know more about this novel, you should read the original work or search for other related information.