Shinji Sugimoto has never forgotten the night his family was slaughtered by Nightmares.

After some time, he enters the academy determined to become a Cleaner, Magic Knights tasked with protecting humanity from these nightmares, but unlike the other students, Shinji has background or prestigious family and no experience to guide him.

As he struggles through brutal training, he forms unexpected bonds with Maya, the reckless daughter of a powerful family, and Kenji, a young warrior carrying the weight of his family's legacy.

beneath Shinji's quiet personality lies a growing obsession of hatred and revenge.