Follow the boat + pirate fandom
The first two chapters are a bit poorly written, so I recommend reading the third chapter.
After Payne was knocked down by Naruto, he left his original world.
In the world of Naruto, there is only one body left
Resurrected in Searob Village (Usopp's village)
After he understood the situation of this world
He thought, "There is no peace in this world either."
So, at the invitation of Payne and the protagonist group, he began a journey to make the world reality (feeling) and (pain) peaceful (suffering).