Chapter 657

Chapter 657 is called "Severed Head".

Cover Page
From the Decks of the World Vol. 39 - "".

Short Summary
On Punk Hazard, Luffy, Zoro, Usopp, and Robin continue their exploration and discover that the other half of the island is actually frozen and mountainous. Meanwhile, Sanji, Nami, Chopper, and Franky discover a severed samurai's head (somehow still living) while in captivity. In their quest to escape their confinement, Franky blasts a way out and the group runs into a room of gigantic kids. Brook, however, is nowhere to be found.

Chapter Notes

 * Zambai, Tamagon, Marumieta and Yamenahare are seen for the first time since the timeskip.
 * Bimine makes his first appearance.
 * It is revealed that Punk Hazard is actually a two-sided island. The first half is engulfed in flames and the other half is covered by ice. These parts are separated by a lake.
 * Franky, Sanji, Nami, and Chopper find the severed, but still-alive, head of a samurai of the Wano Country who states that he is looking for his son.

Characters
1: first appearance