According to ancient Isrenasa legend, a God of Destruction who lived long since ancient times will descend when the world is threatened by the darkness of humanity. Although it was a guardian of the world to its true nature, humanity has now called it by its gigantic maleficent form they call a "dragon", as the destruction it brought despaired the ancient civilization to its knees. Despite its actions, the dragon felt great anguish and regret by what it has done. To prevent tragedy from repeat itself, Naja casted the Jewels of Doom to the vast corners of Isrenasa before hibernating into a long slumber.
2 billion years after its descent, it awoke in Logan's era and was greatly disappointed that humanity has not changed one bit during its sleep. Thus Naja decided to end mankind once and for all by reclaiming the Jewels of Doom, thus being the mastermind of the story events.
Naja finally confronts Logan and after the ultimate battle, Logan finally slays it with the Sword Blaze, the only weapon that can pierce through its indestructible skin. In its dying breath, Naja professes to Logan the true history of its past in satisfaction of understanding that humanity's bonds can be hope for the world.