Left behind at the Going Merry , Zoro attempts to train his body to resist the freezing temperatures by swimming in the icy river. The scene provides a brief moment of levity as Karoo, Nami's giant duck, mistakenly believes Zoro has drowned and jumps in to "save" him. Key Character Introductions
In One Piece , titled "Are You Happy? The Doctor Who is Called a Witch!" , the Straw Hat Pirates continue their desperate search for a doctor on the winter-stricken Drum Island to save Nami from a life-threatening fever. Plot Summary One Piece Episode 81
This episode is a critical midpoint for the (Episodes 78–91). It sets the stakes by establishing the triple threat the Straw Hats face: Nami's failing health, the harsh natural environment (including the Lapahns), and the political upheaval caused by Wapol's return. Left behind at the Going Merry , Zoro
While carrying the ailing Nami toward the peak of Drum Rockies, Luffy and Sanji are relentlessly pursued by a pack of Lapahns —aggressive, giant carnivorous rabbits. Sanji instructs Luffy not to fight back, as any impact from the battle could worsen Nami’s condition. The Doctor Who is Called a Witch
Dr. Kureha , the 139-year-old doctor locals call a witch, is introduced. She is shown treating a young boy in a nearby town but demands a steep price: 50% of the local restaurant's assets and various supplies.
The island's former tyrannical king, Wapol , returns to Drum Island. Having fled when Blackbeard attacked the island previously, Wapol arrives with his "Tin Plate" army and his pet hippo, Robson, intent on reclaiming his throne.
The episode focuses on the multi-front struggle to find medical help while a forgotten threat resurfaces to haunt the island.