The seal of the demon. Knight A.

Did you know that entities from other worlds move into our reality? They hunt the inhabitants of the Earth, and only mysterious guards are opposed to them.

I lived a cheerful carefree life until one case crossed the past. As it turned out, I do not know anything about the world, about my father, brother, and even about myself. Now I am forced to start a new life in the walls of a closed Academy of Guardians. The forces that have discovered must know. And must learn to defend himself in order to just survive.