Gravity Falls, Amphibia, and Owl House all exist in the same universe! What ideas can you come up with? Sorry, this chapter is not for OCS unless it does make sense. But the focus is on canon characters.

Basic Gravity Falls Idea: Luz is curious about the town of Gravity Falls since there's magic within it and she can practice glyphs there.

Basic Amphibia Idea: Marcy moves away and moves to Gravesfield. She then meets Luz and school and the two become friends due to their similar experiences. Maybe Luz joins Marcy's DnD club at school?

Amphibia Idea 2: The girls get pulled into the demon realm after Dr. Frakes opened the portal that was right next to the Owl House. It malfunctioned and couldn't be closed, pulling them in.

Make up any others, especially if you want to combine both fandoms.