The Mystery of the Stone.
As the Bonito II sails to the German village of Idar-Oberstein, Fena tries to get her protectors to teach her how to fight, but with little success. Upon arriving in the village, they meet a woman named Arya, who takes them to see her grandfather, the Burgomaster. In exchange for Yukimaru sharpening his knife, the Burgomaster offers to help them find the origin of the stone. He tells them that the stone actually came to the village from somewhere in France, but the buyer was listed as La Pucelle d'Orléans, the nickname given to Joan of Arc...
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