One Piece: Chopper Kingdom of Strange Animal Island
The Straw Hats land on O-Kan Island, an island of intelligent animals where Chopper is crowned king. He must choose between his crew and his new subjects as they fight a greedy invader seeking the island's treasure.
Driven by a treasure map, the Straw Hats journey to the mysterious O-Kan Island, unaware of the extraordinary animals with human-like intelligence that inhabit it. A mishap during a turbulent sea voyage separates Chopper from the crew, leading him to fulfill an ancient prophecy and become the island's new 'King of Beasts'. He gains the adoration of the island's inhabitants, particularly a boy named Mobambi. However, Chopper is torn between his loyalty to his crew and his responsibilities as king. Their peaceful existence is threatened by Count Battler, a ruthless invader seeking a powerful treasure rumored to reside on the island. The Straw Hats must then unite with the intelligent animals o...