Tempest：The Last Mecha

Colt Thorne was the Mech King until his parents died and something in him gave way. Freya found him afterward and got him off the street, and he has been living since as a janitor, mopping floors in a place where nobody looks at him twice. He loves her and has never said so. Then Freya is betrayed by people close to her and pushed into a mech duel with her life as the stake, which is not a match she can win. Colt stops hiding. His neural sync runs at one hundred percent, a figure other pilots do not reach, and he takes The Tempest out. Behind the duel there is an alien swarm coming toward Earth in numbers that would end the species, and the machine sitting under a cover in the hangar is the one that can meet it.