That joke in chapter 9 was pulled off perfectly, wonder where things will go from there with the characters though? It kind of seems like a harem ending???
It's clearly a harem -premise-, and she doesn't actually seem to have a serious interest in any of them, so I'd be surprised if:
A) ...there aren't more girls waiting to be introduced that will fall for the protagonist,
B) ...if she favors one over the others, or
C) ...if she ends up with any specific one by the end of it.
Honestly, this feels mostly like a joke premise so far, so I wouldn't hold out serious hope for any actual romance, but maybe the writer will throw a curve ball.