Impel Down, an underwater prison, served as a pivotal prelude to significant events in One Piece history. The ripple effects of Luffy's actions at Impel Down had lasting consequences on the world ...

The sinking of One Piece's world is a big deal with implications ... Countries and islands such as Wano, Water 7, and Impel Down are already submerged below the ocean. While Water 7 only becomes ...