They both rely on well - developed characters. In realistic fiction, we get to know characters through their daily lives, relationships, and actions. Similarly, in fantasy, even though the settings and situations might be out - of - this - world, the characters are still complex and relatable. For instance, a young hero in a fantasy adventure has to grow and learn, just like a teenager in a coming - of - age realistic story. Also, both types of fiction can carry a message or theme. It could be about friendship, courage, or the search for identity, regardless of whether the story is set in a magical realm or a real - life city.