Naruto Enters One Piece

A shut-in from Earth was unexpectedly transported to the world of Naruto. Using his knowledge of the plot, he gained immense power and even created another body for himself.

At the end, he fought Otsutsuki Kaguya alongside Naruto and Sasuke. But an explosion struck and swallowed him up, sending him to an entirely new world.

The Great Pirate Era: the seas are in turmoil, the strong stand tall and fight one another, and the arrival of the ninjas heralds the beginning of a whole new era!!!