Survival in Another World with My Mistress! (Manga) Vol. 4

Kousuke has armed the refugees and repelled a large-scale invasion of gizma, defending the elf village. Now his next objective is to reclaim the former Kingdom of Merinard and lay it at the feet of his mistress, the dark elf Sylphy! As a first step, he must conquer and tame notoriously monster-ridden and harsh Great Omitt Badlands! Good thing Sylphy knows a thing or two about taming...