One quick note: Eve is the girl that summoned the demon!reader, she is not from the series, just a random character I needed for the one-shot. Enjoy~
''Ex profundissimum inferni, de imis profunda Tartara, conjuro te illusiones daemonum!''
Eve shouted out the spell as she held the journal up. Everything went black and white, and time stopped. The journal wrote the number 1 on the golden hand that was printed on it. A dark, deep laughter echoed as a portal opened in the sky, in a triangular shape. The girl watched as the hole in the sky took a more specified form. It was black, with a white mouth on it and completely eyeless. It was wearing a yellow hat, and had yellow arms and legs, with black heels and black gloves.
She watched in awe as the triangle before her smirked wickedly. ''Gravity Falls? Now, if it hasn't been some time..'' A feminine, dominant and elegant voice spoke as the triangular, assumingly female, demon looked around.
''And I take it you summoned me? I am