I think Hebikawa's the most interesting character of the series.
But if I had my way, Otobe Moe would "get the win" with Keisuke in terms of romance.
Sadly she's no Botan, and I don't think this series will do anything unexpected when it comes to who Keisuke gets with (because I also don't think he won't get with anyone.)
But she learned a valuable lesson here, which I appreciate in general when it comes to growing up:
Don't become someone else for the sake of other people. Anyone who likes you in any capacity likes you for you.
Become the best version of yourself you can, and you'll win friends who value you in a genuine way, you'll have better success with rewarding romantic relationships, and you'll feel better about yourself all at once.
So if nothing else, I hope Moe internalizes that fact. She doesn't need to be anyone other than the spunky tomboy she is, because that's her core and her ideal.
Anyone who'd ask her to change that, isn't worth her time.