Jesse, a lucky and unfortunate doctor who travels to the world of pirates. The original owner of the body has obtained the most vicious ability in the history of the Devil Fruit, the Dark Fruit ability. But unfortunately, he came to Wano Country, where Ota was to be executed, and in order to escape from Wano Country, at the age of 7, he had to take advantage of his young Hiyori identity to find bodyguards and escort them out of Wano Country. In this way, Jesse was escorted by Frostmoon Ushimaru to the East China Sea, and seventeen years later, he began to conquer the Great Voyage from the East China Sea......