It's strange the mangaka and publisher have such wooden eyes. Minato & Elk apparently have a romantic/sexual relationship in the novel, based on what readers have mentioned, but in this manga they are nothing but friends and members of the same adventuring team. That's it. Yet the manga has a few times depicted Elk being intensely jealous whenever Minato is somehow associating with females Elk doesn't know or can't judge to be harmless. But then again, this is isekai trash, so there are no standards to follow. Just cut out a portion from the source heedlessly and don't care how it affects the rest of the story. No problem, everything's swell in the mangaland.