On the continent of Kunaaan, three kingdoms maintain a fragile peace through mutual suspicion and military strength. But no alliance can prepare them for Daganzord, an ancient dragon whose power levels entire regions to ash. When a desperate ritual to seal the creature fails catastrophically, it leaves behind only tragedy and a single survivor: a boy named Hiiro, whose parents died in the attempt. Sixteen years later, Hiiro comes of age with one purpose burning through him: master the blade and hunt down the dragon that took everything. But Daganzord's return doesn't just threaten one life or one family. As the dragon's destruction spreads across Kunaaan, the three kingdoms spiral toward conflict, their fragile alliance shattering under the weight of desperation and blame. Hiiro's personal vendetta collides with continental war, forcing him to choose between his revenge and preventing total annihilation. What starts as one young swordsman's quest becomes something far larger, where steel clashes against magic and old wounds threaten to consume an entire world.