Already played Bad Apple Wars and Period Cube and thought they were both very average. How's Norn9? That's the only one I'm missing.
It's personally one of my least favorite otome I've completed. As it would turn out: more love interests does not equal a better game as none of them were developed as well as I would've liked (Senri is best boy though). The plot makes very little sense by the end so don't get your hopes up there. Koharu in particular of the three protagonists was really annoying.
But I do think the music is really good (despite my criticisms I still listen to the soundtrack to this day), the art is nice and three protagonists who are all different characters instead of the usual one in VNs was a cool experiment.
To be honest, I think Norn9 suffered a lot for me because it had the misfortune of originally releasing a month after Code:Realize, which remains my favorite otome I've read 5 years later. So maybe it might be better for you? Who knows.