One Piece "Skypiea Adventure"

While visiting Skypiea, the crew gets drawn into a war between two races and Luffy defeats the god Eneru, ending the war. Luffy meets Admiral Aokiji, and is defeated after he learns about Robin's heritage. Luffy continues to face other enemies linked to Robin's heritage, such as Franky, a cyborg who eventually becomes Luffy's ally and the intelligence agency Cipher Pol No. 9, who causes Luffy and his crew to save Robin at Enies Lobby. Robin rejoins the crew after their battle on Enies Lobby - declaring war on the World Government in the process - and each member receives their bounties. The crew returns to Water 7 and after the Going Merry breaks down, they get their second ship, the Thousand Sunny; there, they meet Luffy's grandfather, Monkey D. Garp. When the crew come across Thriller Bark, they meet a skeletal musician named Brook. While there, they defeat the Warlord Gecko Moria, returning Brook's shadow in the process. After releasing the rest of the island's prisoners, Brook becomes Luffy's ally. The crew goes to the Sabaody Archipelago to coat their ship, but an incident involving the auction of the mermaid Camie eventually causes the crew to be separated during the encounter against Admiral Kizaru, and the Warlord Bartholomew Kuma.