It WOULD be nice if Komaki gave hints here and there that Hishikawa is starting to grow on her in a potentially romantic way. It's not much of a ''will they or won't they'' if one of the parties involved only sorta tolerates the other at best (^^) They have fun interactions and all but I can't help but want a bit more out of it.
Yeah, there’s a thin and pretty vague line in a high-concept (medium-high anyway) comedy manga between, “Look, this is just how this one works” and, “This doesn’t make a lot of sense even in the terms it sets up.”
I haven’t read the whole thing in a while, but as I recall, Hishikawa started out waaay over the top in her attempts to use money to buy her way into a (primarily lewd) relationship with Komaki, who in turn sent out signals that if Hishikawa would just act more like a normal person a closer relationship was theoretically possible. And, with help and advice from others, that’s sort of what Hishikawa has done, (or maybe partially successfully tried to do).
But the fact that Komaki appears so oblivious to what Hishikawa is doing and feeling makes it seem like she’s completely unaware of any romantic overtones to their connection at all. For instance, it’s as if Komaki has never even heard of the “feeding each other a taste” trope, so she can’t even conceive of what Hishikawa wants from her.
I guess “this is just how this one works” will have to do, at least for now.