The Day the Empire Fell

The powerful demon that was defeated by Beisoft Academy 3 years ago is now back, and the world is on the verge of doomsday. How can an ordinary boy face the most powerful terrorist group in the world? By courage, by wit, or by faith? How will he change the world on his own? A gem left in the world, an unexpected encounter, a decision to abandon faith, a persistence to abandon everything for love, whether it is a human or a demon, whether it is a foreign race or a god, their hearts are the same!