Wasteland Overlord: I Dominate with a Robot Vacuum

The Story

Leo wakes up in a ruined world after his wife betrays him. He discovers a broken robot vacuum that unlocks a lost military fortress system. This revelation makes him the only SSS-tier breeder. Leo builds a mighty fortress and wields a plasma orbital cannon. He destroys 3,000 siege mechs in a single strike. The devastation cements his power as he forges a new order from the ashes of the old.