God Of Soul System

You know One Piece, well the protagonist is someone who was reborn into someone’s body from One Piece. Well, can you guess who is it?
In this story you may know the characters, but you wouldn’t be able to guess what will happen…
So, let’s see what will happen.
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Description:
All Things of this World, Turn to Ashes, Flowing Blade-like Flame!
Crossing over to the world of pirates, in the era of pirates, the Roja from eleven years ago obtained a Sword Soul system that lets him strengthen infinitely and extract various kinds of skills.
Flowing Blade-like Flame (Ryūjin Jakka) , Mirror Flower, Water Moon (Kyoka Suigetsu), Moon Fang Heaven-Piercer (Getsuga Tensho), Thousand Cherry Blossoms (Senbonzakura)……
“If this sword descend, you may be roasted to death.” Roja looked at Akainu in front of him and seriously said.