Tempest-King of Mecha

Cael once ruled the mechs as the Mech King, but the empire now brands him a traitor, so he lives in hiding under the plain disguise of a janitor. His quiet life changes when he steps into a monster arena to rescue Aria and awakens a legendary machine that had lain dormant. Revealing his true power could win back his name, yet it could also expose the secret he has guarded so carefully.