I've played full visual novels before and they look like illustrated books, with and interesting, flowing narrative.
I've played more interactive, social games and they're way more dynamic and feel more genuine.
In this game, all I did was study (study what? What for? Did I learn anything?), eat, give gifts (what? Is it normal to just go to someone you don't know and say "take this. And this, and this, and this..."? And it's also kinda superficial that they like me more because I bought them "something"), sleeping (has a day has passed? The scenario didn't even change!) and talking (over the same dialogues until I gift them).
Update: Replaying, found out if you don't study enough, you get expelled. And after you don't, you just don't need to study anymore, which is also unnatural and kinda boring. Especially with no clear indication of your progress for the test. Even studying in real life you get more of a sense of accomplishment after studying! This game in no way felt like a high school
Story-wise, I can't complain about the characters, apart from the obvious harem-protagonist-syndrome, where everyone likes the main character. I would expect at least half of them to have an adverse reaction. And would like to see rejection. It hurts, but it's part of life.
And the main character is neither blank (or customizable) enough for the player to insert his own personality, nor he is detailed enough to feel like an interesting, genuine character.
So, to me, this just seems like a way to appease the player's needs for easy romance with whoever they choose. Again, this seems superficial and not at all realistic.
It may have cute romance and maybe have an interesting story later on, but, as a game, it is boring.
The background music also has a terrible loop :\
It started to fade out when the satyr girl started talking, made me think "Hey, something is going to happen!". But no, the music just restarted.
This would do much better as a light novel or graphic novel than as a game. Again, sorry if it was too biased