Thanks to several events that all happen at once. Several different universes all suddenly merged into one. And several people who found themselves alone come together in the town of Gravity Falls.
Naruto and Sunset have ended up in late 1800's America. There Naruto is found by Theodore Roosevelt and became his ward. And Sunset ended up becoming the daughter of Barbie Norton.
A single spider changed everything. Now, Twilight Sparkle has to navigate 10th Grade at a new school, while also juggling her new responsibilities as New York City's first ever superhero: The Amazing Spider-Girl!
The turtles went on an adventure in another world called Equestria to saved it from the evil Kraangs, but for that, they needed to learn more about this new world, but luckily they meet the Mane 6.
Equestria is in danger, now Mane 6 and Turtles need to reconsider, leave differences behind and be friends again to save Equestria from these terrible villains.
The Apples were a normal farming family living in Ponyvile. Up till a young boy name Naruto suddenly appeared out of nowhere. Now in a world without ninjas or a need for them.
Derpy's life takes a whole new direction when she is given a once-in-a-lifetime opportunity. But where will this new journey take her, and who will she be at the end?
War, it never changes. The only difference between times of war are the combatants and their weapons. With war, the fates of all involved shall change forever. Crossover with Kamen Rider Gaim