The "only-there-as-an-interlocutor-for-the-protagonist" character who appeared in just a couple of panels throughout the series... suddenly became an actual character!?
Or not ;w;
I get that the writer probably wanted to expand on this character since their role in the story is so bland and minimal that it feels wasteful to even have her as a character, but the solution to thats is not really to give them another role that is even more "functional" than the first... Love rivals tend to be woefully underdeveloped as characters as well.