: Resource management, fortifying shelters, and tactical combat.
This "treatment" becomes the central plot hook, as Kotaro must expand his harem to "save" other survivors from turning into the undead. : Resource management
While specific "raw" page-by-page breakdowns for Chapter 12 are often found on exclusive hosting sites like WeLoveManga : Resource management
Relying on official sources like these supports the creators and ensures you are getting the highest quality scans and translations. : Resource management