The Water 7 Saga (ウォーターセブン編,Wōtā Sebun Hen?),[1] also referred to as the Water 7–Enies Lobby Saga (ウォーターセブン・エニエスロビー編,Wōtā Sebun–Eniesu Robī Hen?),[2] "World Government Saga" and "CP9 Saga", is the fourth saga of the manga and animeOne Piece.
This is the longest saga in Sea of Survival: Super Rookies Saga and currently the third longest overall, after the Wano Country and Dressrosa Sagas.
This is the only saga in the first half of One Piece to not introduce a new Warlord of the Sea.
It is during this saga that the Straw Hats' need for a shipwright, as well as a new ship to replace the Going Merry, becomes clear. This saga is the last saga to feature the Going Merry and was the first saga to feature the Merry's successor, the Thousand Sunny.
This saga involves several members of the Straw Hats leaving the crew temporarily. During the Long Ring Long Land Arc, Chopper is forced to leave the crew during the Davy Back Fight between the Straw Hats and the Foxy Pirates (in the anime, Robin is forced to leave during the Davy Back Fight as well), though the Straw Hats later win him (and Robin in the anime) back. During the Water 7 Arc, Usopp leaves the crew following his and Luffy's fight over the Going Merry, while Robin is forced to leave due to the threat CP9 and the Buster Call pose to the Straw Hats. Robin later rejoins the crew during the Enies Lobby Arc, while Usopp officially rejoins (as he used his Sogeking alter ego during the later part of the Water 7 Arc and the whole of the Enies Lobby Arc) during the Post-Enies Lobby Arc.