I can't take this seriously anymore. I was hoping for something better, but it has kind of proven to not be.
Every male character other than the MC that could potentially be a romantic interest to a female character is either antagonistic, ugly, or somehow completely incapable of being a romantic rival. Here we have a skeleton soldier. Previously, we've had the antagonistic Prime guild.
Any female characters, even if they are actual and complete trash like the pink-haired girl, are treated nicely and given room for character growth and development to make readers like them.
This is harem-lite. Even if there's no actual harem, this is the stuff that makes the harem genre usually crap. It's predictable. You can tell from a glance who is going to be an enemy and who will be an ally. Pretty girl? Ally. A living male in his teens to 40s or so? Antagonistic or otherwise completely irrelevant to the story.