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The Seven in Gravity Falls by SmilesForever reviews
The seven end up in Gravity Falls after a certain dream demon threatens them.
Crossover - Percy Jackson and the Olympians & Gravity Falls - Rated: K+ - English - Chapters: 1 - Words: 1,264 - Reviews: 16 - Favs: 9 - Follows: 18 - Published: 3/19/2017