When Invading the Parallel Ninja Worlds, Why Are All of Them Traitors?

In the 40th year of Konoha, the time traveler Fuya Ye unified the five major countries, and the ninja world entered the imperial era.

In the 20th year of the Imperial calendar, the Imperial exploration team arrived at the parallel ninja world, but they found that this ninja world was a little different...

Naruto: Am I not the son of a hero here? Why am I so miserable?

Obito: I killed my teacher and his wife who were so good to me. I am simply a living beast here!

Itachi: I am even more outrageous. I am worse than a beast here!

Senju Tobirama: The biggest mistake I made in my life was to accept those four disciples!

On the other hand, the attitude of the people in the invaded parallel ninja world gradually changed, and they all turned against it:

Sasuke: Konoha destroyed my family, and I request the empire to sanction it!

Gaara: Rasa is unworthy of being a father, and Sunagakure doesn't need to stay!

Hyuga Neji: When will the empire invade in full force? I apply to be the spy!

The foreign demon king landed in the Wind Country, and the man-eating monster occupied Sunagakure... His Majesty the Emperor will arrive in his loyal Konoha today!

Raw: 入侵平行忍界，怎么全是带路党

EN: Rest assured, I won't simply copy and paste, I ensure that every chapter is readable with as few errors as possible, though I may make a few mistakes, in those cases please point them out.