Question for Fictionkin and Otherkin (and other mythical beings)

First of all hello everyone! Im relatively new to the therian community (awoken Novemver 2023 as a red fox!) and dont know about the other branches of therianthropy other than otherhearted and otherkin. However, I stumbled across fictionkin and orherkin and am alittle confused... how can someone identify with something that dosent exist? For example, how could someone have a dragon, vampire, or a species from a game or movie theriotype when those creatures never actually existed or are made up?

I did a bit of research from others who are part of this branch of therianthropy, yet am still a bit confused on how?

There were times where I questioned if I had a dragon theriotype based on certain behaviors. For example, I often see myself with large claws, a scaley tail, large sharp teeth and even big wings. I hoard all my plushies in a sort of cave on top of my loft bed (this is also a behavior of my red fox theriotype, I love burrowing) and I sometimes let out low grumbles and growls when frustrated or angry and move around like a dragon.

Even with all these behaviors I still don't feel comfortable or ready to call myself a dragon because, simply, they dont exist. It feels so fake to me because dragons never actually existed. Its super frustrating that I cant make sense of these behaviors.

This is coming from a place of pure curiosity and im not here to judge whatsoever. I would love for people to share their experience finding themselves and their theriotype under this branch, please enlighten me!

Thank yall for reading :3