System: From Scrap to SSS

Caleb Vance transmigrates into a mecha-girl world, only to be betrayed by his mecha-girl and robbed of his inheritance. But luckily, he activates the Godly Modification System, turning a dying scrap mecha-girl Nova Blaze into an SSS-tier warrior. Together, they reclaim what's his and uncover a deadly cult. They called him trash. But who's the real trash now?