The year is 2101.  In the walled city of HK-36, humanity’s final stronghold, a young person awakens with no memory of his past—only to find himself wielding a power he barely understands: a suit of demonic armor, infused with mysterious strength. As he tries to piece together his lost identity, he joins forces with a battalion of mech pilots who fight against relentless demonic forces, from monstrous titans to cunning creatures lurking in the shadows. Now, he must adapt to a life built from a new start, forging new bonds with comrades while mastering his dark gift. In a world where every battle could be their last, he’ll discover that his power may be the key to humanity’s survival—or its undoing. [participant in the Royal Road Writathon challenge]