When the portal activates, Mabel and Dipper are thrown in... just as Grunkle Stan reunites with his brother! But when they come out the other side, things get a whole lot more confusing. I mean, what's up with the living precious stones? A Steven Universe- Gravity Falls X-over. T for whatever. I'm just playing it safe. There is no, I repeat, NO MabelxSteven
Crossover - Gravity Falls & Steven Universe - Rated: T - English - Adventure - Chapters: 2 - Words: 2,685 - Reviews: 12 - Favs: 10 - Follows: 25 - Updated: 2/16 - Published: 11/10/2016 - Dipper P., Mabel P., Bill, Steven U.