One piece. Vol. 69, S.A.D.
(Graphic Novel)

As a child, Monkey D. Luffy dreamed of becoming King of the Pirates. But his life changed when he accidentally gained the power to stretch like rubber... at the cost of never being able to swim again! Years, later, Luffy sets off in search of the "One Piece," said to be the greatest treasure in the world... The Straw Hat pirates have finally arrived in the dangerous waters of the New World. On a mysterious island called Punk Hazard, Luffy and his crewmates run into all sorts of trouble. And controlling things from behind the scenes is a rogue scientist and weapons creator, Caesar Clown. Luffy and Trafalgar Law enter into a pirate alliance in order to defeat Caesar, but the mad scientist unleashes a deadly gas all over the island. As Luffy goes after Caesar, Trafalgar Law puts his plan into action.