Rebuild World: Volume 2 Part Two - Revengeware

Akira has only spent two days exterminating the heavily armored scorpions hiding out in the underground tunnels, and he’s already had more close calls than he bargained for. And try as he might, his bad luck’s about to get worse. A chance encounter soon proves that the biggest threat in the tunnels aren’t monstrous bugs but other humans. Now a gang of cyborg relic thieves have him in their crosshairs, and his fellow hunters may not take his side. With his lines of communication cut off, and forced to fight new enemies and old allies, Akira is outclassed, outgunned, and out of options. How will the young relic hunter stop a threat that can pursue him from beyond the grave? As Akira fights for survival, the scheming ghosts of the Old World look on...

[From J-Novel Club]