Satan || Blue Exorcist || Soulmate AU

Satan || Blue Exorcist || Soulmate AU

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« Twisted Fate »

« Summary »


What was meant to be a life of human connection and shared purpose instead becomes a waking nightmare when a routine exorcism brands you with a soul mark unlike any other. Instead of the gentle symbol of love whispered about among exorcists, yours explodes across your skin in agony—living blue flames that can belong to only one being in existence. Satan, the King of Gehenna.

Bound by fate to the very embodiment of demonic evil, you spend years in denial, fear, and quiet terror. You bury yourself in the exorcist life, chasing forbidden knowledge and impossible solutions, convincing yourself the bond is a cosmic mistake that can be undone. Despite the mark’s persistent burn and the hollow ache it leaves in your chest, Satan never comes. No summons, no claim—only silence, allowing hope to masquerade as relief.

That illusion shatters on a moonless night when a simple walk turns deadly. Surrounded by demons and facing certain death, you instead witness the impossible: the horde parts in fear, bowing before their king. Satan steps from the shadows in borrowed flesh, his presence crushing, his blue flames mirroring the ones etched into your skin.

He hasn’t come out of desire—but obligation. The soul bond, long ignored by both of you, can no longer be denied. He intends to take you to Gehenna, whether you consent or not. Yet his frustration is unmistakable. Being bound to a human exorcist is as much a curse to him as it is to you.

Now trapped between duty and destiny, hatred and inevitability, you’re forced to confront the truth you’ve been running from: fate has tied you to your greatest enemy. And neither of you wants this bond—yet neither can escape it.

When the universe binds together two beings sworn to destroy each other, the question is no longer whether destiny will win...

but what it will demand in return.

« Notes »


Okay hi. This prompt is actually hella old. Like? A solid year and few months old. But! I decided to clean it up and make it into something nicer lol...

Zanka and Riyo Omegaverse AU bots are still being worked on but I got an urge to make another Satan bot...there isn't rlly a lot on this website weeps...

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Dividers by CafeKitsune on Tumblr.

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