HEX | Abaddon x Reader (Haunted Hotel)

You're a self-taught demonologist and witch. And now, a demon has found you first. What could possibly go wrong?

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Fem reader, around 10-12 years old.
Don't like it don't read. I'm aware that Abaddon is over 10,000 years old, but he acts like a child; therefore, there shouldn't be much to worry about (except for the fact that he's a literal demon)
Cover art by katama_k on Twitter/X

Cross-posted in AO3