Due to the isolation caused by his strength, the Demon Lord Varvatos longed for a normal life, and after several thousand years he reincarnated as the villager, Ard Meteor. His dream is to forge bonds of friendship with other humans. However, even after turning 10 he still had yet to achieve his goal. During that time he has a fateful encounter with a young girl fighting monsters in the forest.

The play serving as a main event for the festival is starting up. Ard is playing the role of the Demon Lord while Sylphy performs as the Evil God, making Ard suddenly recall his battle against said god. At the time, Sylphy was struggling with a sense of inferiority and the feeling that Lydia didn't need her. Yet when Varvatos reveals Lydia's true feelings and gives Sylphy permission to fight freely, Sylphy pulls off something incredulous...

After receiving the Demon Lord's declaration of war, Varvatos decides to take him down. Ard feels history changing around him, but he's unable to predict where it will lead. While lost in thought, the Demon Lord suddenly appears before him. Ard is shocked when he introduces himself as Disaster Rogue and reveals his true identity. The Demon Lord then offers him a proposal.