Ykhjuy

So in a story I'm working on, I'm adding a side character to travel with the 2 main characters because I realized I didn't have very much planned for actually showing who the main characters are and how they react to difficult people. So the character herself actually serves a purpose so that's not what I'm worried about, just thought id include that.

I'm worried about a major detail regarding the character. She believes she has an "evil spirit" attached to her, but he's really just a figment of her imagination. She sees him most nights in her dreams, and actually talks to him, grows with him, you know, like its a real person inside her head. I was thinking she'd even occasionally see him in real life too.

This is where the issue comes up. In stories set in kingdom fantasy, readers tend to see certain things like imaginary friends and gods, as magic and assume they're actually real. So how could I make sure readers know that this "person" isn't really real? I'm worried that if I include this character with that detail then I might end up spending too much time or too little time trying to show that the spirit isnt real.

So should I spend time making sure readers know that the spirit isnt real, or should I just hope they can infer that the lack of other magic means this isnt magic either?

If you want skepticism from your readers, project skepticism through other characters

If a character is imagining she's seeing an evil spirit, and is talking about it to everyone, most everyone else will naturally call her crazy. Let this natural reaction give the reader cues as to how to interpret the behavior.

Or have her secretively share (because she realizes most people are skeptical), and have the one she shares the secret with react naturally.

If your story has no other cues that supernatural things are real, other than a single (erratic) character's assertions of her personal experience, most readers will naturally assume that it's her, and not the universe of the story. Just be sure to also characterize her in a way that it's believable that she IS persuaded that her own irrational whimsy is real.

In a magical setting you can never prove that an evil spirit is not real. Even if you have a "voice of absolute truth" character state that he is not, the audience is most likely not going to believe them.

Wheel of Time spoilers

In Wheel of Time there is much debate on if Rand is crazy, sees a ghost, or has ancestral memories or past life memories. This is never resolved 100%. At some point he just comes to terms with the fact that it is part of him.

So my advice is, don't worry about it. Let it be a mystery, just one more part of this mysterious setting you are creating. What's important is how you resolve it. Does the spirit go away from an exorcism? Does a wizard cast a spell to drive it out, or maybe instead to heal the mind? Or does the character themselves come to terms with that the spirit is not real. This is what will tell you reader how to feel. Maybe you will surprise some with the resolution, but it is much better than feeding the reader chewed up absolute facts.

Side note

I had a novel where my character thought he could speak to aspects of an evil artifact he carried around. Instead it turned out that the artifact was just slowly driving him mad but itself was in no way intelligent. These were both magical causes and almost seem the same at first, but the big point was that the aspect could not know anything that the character did not. It was not helpful, just hurtful. And that was at least in my mind, a fun reveal at some point in the story.

The film Harvey sprang to mind as I read your question. For most of the film, it is assumed that the James Stewart character is delusional since he keeps company with a six foot invisible rabbit.

His sister decides it is time to have him committed since his delusions and general reputation for pleasant insanity is adversely effecting her daughter.

The MC is certain Harvey is real and treats him as though he were. He opens doors and holds them open so Harvey can pass through. He orders beers for two and chats amiably with someone not there. Others characters have diverse opinions on the existence of Harvey but conclude since the MC is doing no harm it doesn’t matter.

Your characters could have a similar response to your MC chatting with air. Whether the being is a figment or not can be left to the reader. It might be intriguing if he were real but had to contend with the MC’s belief in his nonexistence.

If the being is imaginary, knowledge is limited to what the MC knows as a figment cannot know things that the one whose delusion creates him does not know.