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Chapter 473 is titled "Royal Shichibukai, Bartholomew Kuma Appears".
Nami races towards the Sunny and tries to save the ship and the treasure. The Straw Hats gain an advantage over Oars. The ShichibukaiBartholomew Kuma appears, looking for both Moriah and Luffy. He also makes Perona "disappear", to everyone's terror. Meanwhile, Luffy fights Moriah's shadow.