One Piece: Three Fruits, Starting with the Dark-Dark Fruit

(No system + multiple fruits + decisive killing + admiral + celestial dragon) Jiger from Blue Star traveled to the pirate world and became the prey of the celestial dragons in the Valley of the Gods. There is no system, no cheat code, and no grandfather. The only way Jiger can think of is to find the best devil fruit hidden in the Valley of the Gods! However, he originally set his sights on the meat ball fruit and found the dark dark fruit! Just when he was thinking about killing all the celestial dragons in the future, the leader of the Knights of God, Garin, suddenly appeared in front of him and told him that his life experience is not ordinary... The body that has been experimented, the background that is all-powerful, and the most vicious...