On the continent of Kalun, Rolf plays the fool to survive after his father's murder — but beneath the mask hides the Thunder God. He slays sea monsters, saves the princess, and crushes the Abyss Order in war. When his identity leaks, the king helps him win the tribal tournament, making him commander of the Cross Legion. Love blooms with Gunine. At the Rune Summit, Rolf defeats champions from every nation. When Zephyr unleashes the monster Grim, Rolf reveals his Thunder God form, slays Grim, and earns the world's roar.
