In a world where monsters emerge from mysterious Gates and threaten humanity, Licht Arimiya has lived a life consumed by tragedy.

When he was young, his older brother was cursed by a superior monster known as a “Demon,” transforming him into one of their kind and leading to the murder of their parents. Licht himself also lost his eyesight, leaving him to live in despair.

Even so, he refused to give up. Determined to rescue his captured brother and take revenge on the Demons, Licht trained relentlessly in hopes of becoming a “Hunter,” a warrior gifted with supernatural abilities.

But his dream never came true.

The only class he was able to obtain was “Guide,” a low-ranking support role meant to assist Hunters in exploring Gates. Despite being looked down on and ridiculed by the Hunters around him, Licht continued to fight.

Then one day, while exploring a Gate, he encounters an overwhelmingly powerful Demon. The Hunters abandon him and use him as bait, leaving him to die.

But just as he is pushed to the brink of death, a mysterious figure suddenly appears—and an unknown special skill awakens within Licht.

It is a power capable of overturning the fate that the Demons stole from him.