@Jethzki I'm willing to bet money this will be a "status-quo" ending. There's no actual romance in it - sure, various characters might want the MC, but it's not the main focus of the story.
If the plot itself was about the various girls trying to get with him (rather than mostly about them teasing him while he learns to be a better mangaka), then maybe we'd see an ending where he hooked up with one or more girls.
Manga endings tend to be unsatisfying as a rule, and I doubt this one will be any exception.