In a world at war with demons, strength is everything—and Nav has none. Born blind in a society that worships visual prowess, Nav is mocked, abandoned, and deemed worthless. Yet when he enters Valdris Military Academy, the most brutal hero training institution in existence, he refuses to be broken. Armed with only a spear and an impossible dream, Nav possesses a secret: he can "see" the flow of mana itself, perceiving the world in ways no sighted warrior ever could. But the path to becoming the strongest is paved with blood. Friends will die. Enemies will rise. And Nav will discover that true vision has nothing to do with eyes—and everything to do with how far you're willing to go. In the darkness, he will become legend. In the darkness, he will become the strongest. Because those who cannot see, learn to perceive everything.