" There will be no harem unfortunately. " -> Depend of who you ask. I'm glad it's not an harem for many reason. First they are plenty of harem in many many games, it's one of the main genre. Second it doesn't work with romance, it never has and problably never will.
To me, people who want harem are mainly people who want to see the sex scene in one game, despite the fact that it broke the romance, that not a lot of women would agree with that. I get it, playing multiple route can be something people don't want to do, especialy because we are mortal creature and your time isn't infinite. And people have right to not like romance that much, i get it that too.
But since i'm here mainly for the romance, i'm glad it's not harem.