Reborn in Shiryu’s Body, I Join the Summit War from the Start!

The protagonist was a thug in his previous life. After dying, he unexpectedly transmigrated into the world of One Piece and became Shiryu of the Rain. By chance, it was the moment Luffy wreaked havoc at Impel Down. He took the opportunity to join the Blackbeard Pirates and become the strongest killing machine in the crew.