Good lord the WN author is an idiot.
RIP Isekai Walking, at least the community built a nice scanlating group out of it.
Honestly, if this is a long story then I don't mind a possible reunion ark on later date.
Sometimes stories feel too compressed to show their true potential.
As name and premise of this manga, this is supposed to be about a journey, not fast-paced action.
You don't just abandon your travelling companions on a journey unless you're an asshole - no, this vague "bad vibe from some eyes only I can see that I know are hostile because uhhhhhhhhhhh" doesn't cut it as an excuse to abandon your closest friends.
If you want to get meta with it, the series is gearing up to lose the entirety of its character writing quality - MC is basically made tolerably interesting by osmosis from the two girls being interesting. Without them he's a weaker character from a writing perspective than the mute invisible cotton ball that follows him around. The thing he appears to care most deeply about is just whatever the plot requires - for example, the plot requires that an angry stare be sufficient to drive him and the girls apart, so for this sub-arc he cares more about the angry stare than his friends (the author does not make a convincing case for any risk to the two girls - in fact it is left so vague as to leave open the possibility that they are now in
more danger after having lost an ally). We also see the author inadvertently revealing the MC to be a narcissist by his immediate conclusion that the evil eye is checking him out and him alone.
It's shit, man.