S1, E6: With Mr. Sea Cucumber now part of the team, Yaiba and crew are on route once again to Ganryu Island, but not before making a pit stop in foodie heaven Nagoya. For a moment, as everyone chomps down on the local specialty miso kushi katsu, all seems right in the world. That is, until they hear his voice. Suddenly, Sayaka's kushi katsu disappears into thin air, a sign, as they find out, of a bigger problem: the self-proclaimed Mr. Bat, who has his sights on Yaiba's Raijinken. Turns out Mr. Bat is a formidable foe. Musashi may be quick to step in to help, but a swift bite to the neck changes everything.