Book Name: Zero Mech
Writer: Adam Moon
It is 2229 and Jack Peterson has terminal malignancy. He’s a dead man strolling until his PCP gives him an exit plan. In the event that he will surrender as long as he can remember.
Once there, he finds that outsiders exist and they are aligns with humankind. However, there’s a trick to accepting treatment: while his body mends, he should go about as muscle for the outsiders.