Nahuse 
Rebuild World: Volume 4 [EPUB ebook] 

Akira has grown by leaps and bounds as a hunter, and so he decides to tackle the dangerous Mihazono Town Ruins. In Mihazono’s factory district, he unexpectedly comes across Carol and Monica, two hunters who are working together as surveyors. But the real surprise comes when a horde of menacing machines defy their own programming in order to pursue the hunters! What does this mean for Akira and his companions? Friends both new and old, and some unlikely allies, join the fray against their toughest foes yet!