Fullmetal Alchemist: The Prototype. Once recognized as an oasis in the middle of a great desert, the town of Krowatol was a beacon of hope for weary travelers. Now its water supply is almost completely gone, and the town is as dry as the surrounding countryside. When two mysterious travelers arrive, Rosé Tomas, a resident of Krowatol, discovers they are the infamous alchemist duo known as the Edward and Alphonse Elric brothers. As word reaches Governor Arzen of the town of their arrival, the brothers are invited to his estate to hear Arzen 's odd and dangerous request.