In today's Japan where magic defines everyday life, 95 percent of the population is capable of casting it. The rest, referred to as Duds, exist on the periphery. One of them is Daiki, a 16 years old high school student who seems entirely unremarkable—until he learns that the amulet his deceased father left him contains an ominous secret.

When he pulls it out, a dead, magical eye stares back at him from his chest. That "eye" is the eye of a mystical magic beast his dad killed. Now that it's been initiated in him, powerful factions want it back.

With assassins closing in and the balance of the world within science and magic crumbling, Daiki's hidden strength explodes into raw, uncontrolled fury. To survive, he must uncover the truth surrounding his father's murder, the monster locked within him, and the secret society pursuing the eye—before its might consumes him completely.