I will say iy again, the harem part in this manga is annoying, specially when one of the girls are in the title in a ship name together with the MC.
It's makes less sense than the regular harem
I sincerely doubt it, given the title of the manga.
This manga feels too... mainstream to pull something like that. Same for a harem ending, we're not getting that either.
So either Himari wins or we get the dreaded super-open-ended "and maybe something will happen but he doesn't end up with anyone for now" ending...