One Piece: God Valley Died, Phoenix Nirvana Returns

After traveling to the pirate world, Caius joined the Rocks Pirates and gradually became a top warrior.

Before the battle of God Valley, Caius told everyone that they should do their best and not slack off. After they succeed, half of the world will be theirs.

But in the end, Caius still underestimated their [rebellion]....

The ending is the same as the original, and the Rocks Pirates are destroyed.

The only difference is that the time traveler [Caius] is also involved.

Fortunately... he obtained [Nirvana Rebirth] from the system.

When he returned, it was too late, but everything was still in time.

"Everyone... history has not recorded me, but you - know who I am."