My Clone is the Space Bug King

Humanity has spread beyond Earth, while the planet itself has become a polluted nuclear wasteland and its remaining inhabitants face discrimination and short lives. One Earth native works to become a mechanic more skilled than the new humans, hoping to build a better future for himself. When the cosmic insect race attacks a human outpost, he is betrayed and used as cannon fodder. Driven by a desire for revenge, he discovers that he has been reborn as one of the very insects that attacked.