Keep Shirahoshi Safe! Decken Close Behind!—Fish-man Island (517-574)

537/57 The fishmen think Shirahoshi has been kidnapped by Luffy.

The Straw Hats Defeated? Hordy Gains Control of the Ryugu Palace!—Fish-man Island (517-574)

538/57 Zoro knocks out Hody but is attacked by the other fishmen, who take Energy Steroids.

539/57 Among the corals in the Sea Forest, Robin finds what she is looking for.

540/57 Jinbe starts telling the story of Otohime and Fisher Tiger.

541/57 Jinbe continues to tell Luffy and the others the history of Fishman Island.

543/57 Koala gradually loses her fear of fishmen. The crew accepts her as one of their own.

544/57 Arlong, enraged about Tiger鈥檚 death, goes off on his own and attacks the Marines.

545/57 Jinbe accepts the position in the Shichibukai.

546/57 Otohime departs with the Celestial Dragon, and the whole island awaits her safe return.

547/57 Otohime is gunned down and draws her last breath.