I Left My S-Class Mate for a Hidden SSS Prototype

Undercity bio-tuner Avery Vance rebuilds discarded S-class combat unit Leon Voss from scrap, only for him to abandon her 99 times for wealthy High City heiress Celeste. After his final betrayal leaves her bleeding for dead in the wasteland, she severs their neural bond, takes in broken B-rank Fenris Thorne, unlocks his hidden SSS-class prototype power, and earns fierce loyalty and true love.