The Returning Demons

In 1415 in the old era, a meteor shower streaked across the sky, and a worldwide disaster struck. The meteorite cave connected to another world, and demons grew inside. They had abilities beyond understanding, and humans had no capital to resist... Until the first mutant appeared, forming a civilization headed by seven major forces... Since then, humans have entered a new era, the Meteoric Age. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.