Three years have passed since the war for the kingdom's liberation. Ryo, a water-element magician who was appointed the head duke of the Knightley Kingdom, enjoys a leisurely life devoted to alchemy and farming, traveling between the royal capital and Rondo Forest. However, being a nobleman does not mean he can avoid trouble. After climbing the castle, he is forced to take part in negotiations with the Debuhi Empire, and then joins a diplomatic mission heading to the far western countries. While everyone is excited by the signs of a new battle, Ryo remains as laid-back as ever, saying, "I want to see a golem!!"