Ancient Book of Ys [OVA]

Our hero Adol Christine, compelled by an unknown urge, travels to the faraway, monster-infested land of Estellia. He learns that his coming was foretold by legend, and that he will end the menace to the land. In the process, he and his companions fight small and giant monsters while searching for the six books of Ys, which hold both the answers to the mystery and the key in solving the problem.