POV when the avatar was freed and it caused a interdimensional black hole , and in Naruto at the valley of the end Naruto and Sasuke just clash Rasengan and lighting blade making the same into dimensional black hole ending up in a new dimension that mixed both dimensions making it one

Sokka: What the F-

Katara: Where are we??

Naruto and Sasuke: Get up ready to fight each other

Kakashi: calm down my students 

Neji gets up from the ground