Witchcraft and Weirdness (Adopted)

If you didn't know already, this was adopted from @Dreams_Senpai. I will of course change some things to make the parts they wrote flow nicer, correct grammar, and make it fit my writing style a bit more. I'll tell you when I get past the already written chapters. This description is theirs, and any A/N's that I don't state are mine are also theirs.
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Wizard
[noun]

a man thought to have magic powers, especially evil ones, popularly depicted as wearing a black cloak and pointed hat and flying on a broomstick.

Synonyms: sorcerer, enchantress, necromancer

"... Are you one of them?"

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When Dipper got chased by the Gleeful twins, he thought he was actually gone for good. Until, he unconsciously summoned the two demons.

Not just ordinary demons if you may ask, but they're the most powerful demons in the multiverse.

And they're quite good looking. Plus, do I smell a love triangle? We can never know! Read this story to know what will happen next!

DISCLAIMER: I DON'T OWN GRAVITY FALLS NOR ITS CHARACTERS. IT BELONGS TO ALEX HIRSCH. I ONLY OWN THIS STORY AND PLOT. OH! AND THE PICTURES TOO, I DON'T OWN THEM BECAUSE I'M NOT AN AN ARTIST AND WRITER AT THE SAME TIME... SADLY...

CONTAINS BOYXBOY. DON'T LIKE? THEN SCRAM!

IF YOU DECIDE TO READ THIS, THEN WELCOME SINNER!