After being branded a traitor by the entire alliance, Cael Thorne sheds his name and lives hidden as Ash Gray, a janitor at a mech academy. He stays out of the fight until Aria Vale, the woman he saved once before, is betrayed by her fiancé and forced into a monster gladiator arena. To save her, Cael reactivates Orion Zero, the final legendary mech, and reclaims the battlefield with a perfect 100% neural sync rate.
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