Chapter 613

Chapter 613 is called "The Mermaid Princess in Hard-Shell Tower".

Quick Summary
Shirahoshi screams and yells in need of help, being afraid Luffy will hurt her. Though, Luffy is her saviour, as she has become target of a big axe, thrown to her from far away. Van Der Decken, has once again thrown a big weapon in her directions to try and kill her, for not marrying him. Meanwhile, Zoro is arrested and the remaining three (Brook, Nami and Usopp take out guards, trying to arrest them too. As guards falter one by one, Neptune takes a swing at them, but is stopped by two swords of Zoro. Having broken out of the palace prison, he aids his friends. Back in Fishman District, Hodi Jones and Van Der Decken make a deal to take the head of Neptune.