Thank you very much for this long feedback! Yes indeed it will be possible to remain faithful to him and not end up with a harem if you wish.
And yes I was a little sad to see this first review where the person speaks as if the game was in a very advanced phase and takes the story a little too seriously when it's fiction but hey I'll deal with it. I develop this game above all by passion (because it combines three things that I like: programming, writing stories and sexy girls) and I also have a lot of positive feedback like yours so that's enough for me!
Haha, who knows...