Let's Go See the Cat Viper

The minks explain that Jack and the Beasts Pirates invaded Zou while searching for a Wano samurai named Raizo. Duke Dogstorm and the Cat Viper led alternating day and night forces against the invaders, but Jack ultimately deployed Caesar Clown's poisonous gas. When Sanji's group reached the island, they forced Caesar Clown to neutralize the weapon and treated the surviving minks, earning the tribe's lasting gratitude.

Two days before Luffy's arrival, Capone Bege and Pekoms came to Zou under orders from Charlotte Linlin. Bege captured the separated Straw Hats and delivered Sanji an invitation to a tea party where he was expected to marry Charlotte Pudding, revealing him as the third son of the Vinsmoke Family. To protect his crewmates, Sanji departed with Bege and Caesar.

Luffy resolves to retrieve Sanji personally. Before the rescue party can leave, Kin'emon and Kanjuurou reach the city, alarming the Straw Hats because the minks seemingly suffered while protecting Raizo. Instead, Dogstorm and Cat Viper welcome the samurai and reveal that Raizo has been hidden safely on Zou all along.