Iron Tyrant

Now, he finds himself in a military training camp where survival is a fierce and bloody struggle. Mateo’s only way out is to become a Duelist—a soldier of supernatural power. But his luck gets even worse when he’s stuck with the lowest Root Card, slowing his progress and leaving him vulnerable in a merciless world.
With two strangers at his side and a mysterious crow spirit linked to his soul, Mateo must defy all odds if he hopes to make it out of training camp alive.