.... He fought w/ and killed an S-ranked monster, solo, and somehow he's scared/vigilant of an A-ranked human, especially when it takes like 10~20 of them to beat one? Yeah, seems legit to me.
The fudge? Reincarnated into a different body? Their bodies look the same for crying out loud; they even recognized each other after the whole transportation thing. -- It's more like swapping places, then reincarnation -.-
.... What was up with those breasts in chapter 1? At first they were over-inflated and sagging like some water balloon, then all of a sudden shrank.
@AbyssalMonkey -- This is an adaption from a novel, haven't read it, but if you want to find out, just search for it.
@KinGrove -- I was able to find to 16 with a quick google (Raffmanga), though I didn't read cuz it requires registration. The site indicates it ends at chapter 16, so you're probably right.
Btw, the scanlation was released 4 years ago.
I agree w/ @monkey123, inexperienced team w/ no backup is just a waste; not to mention sending out female magicians, as they are the ones that give birth. They say human resources are scarce, but w/ how they're using them, it's as if there is an abundance.