One Piece: Chopper's Kingdom on the Island of Strange Animals

While sailing through the Grand Line, the Straw Hat Pirates experience a sudden eruption of geysers beneath their ship, the Going Merry, which causes them to be thrown onto a nearby island. During the chaos, Chopper falls overboard and becomes separated from the rest of the crew, who land on the opposite side of the island. Chopper is soon welcomed by the island's animals and is declared their new king. Meanwhile, a group of human hunters known as the "horn hunters," led by Count Butler—a violinist who gains strength by consuming horns—arrives with the intent to capture the island's greatest treasure to gain immense power. Luffy and his crew must confront Count Butler to protect the island and its inhabitants, while also trying to convince Momambi, a local who distrusts pirates, that they are not all enemies.