The demon world is dealing with the aftermath of the Demon King's defeat, which occurred three months prior. The loss of their king has created a power vacuum, prompting a tournament to select a new leader. The Four Heavenly Kings, including the hot-headed Vamirio, are tasked with overseeing the competition. Amidst the tournament, Vamirio becomes suspicious of Helck, a human hero who claims to hate humanity, and tries to devise a plan to make him lose.
