Re:Monster manga volume 7 features story by Kogitsune Kanekiru and art by Haruyoshi Kobayakawa.

After returning to base, Rou receives a task from the tomboy princess. Before he can even warm up a chair, he is sent to the capital city of Oswell to train the palace guard. Rumors of the tomboy princess hiring demi-human mercenaries quickly spread throughout the capital. For better or worse, the nobility takes a keen interest in Rou and his secret mission!