While people complaining about almost non-existent plot is justified, I actually quite enjoyed the free use aspect of the original game. I wish there were more games like that where the MC has unlimited 24/7 access to any girl of his harem.
My main gripe about this game (apart from artificialy aged characters and sometimes weird faces) is that the MC has very weak sexual stamina.
He usually cums very fast, sometimes it seems just a simple touch on his mast is enough.
Also, I don't remember any of the girls cum from him, at least visually it's not apparent. They all seem to be content with just pleasing him.
Maybe that's why there is so much lesbian stuff going on between the LIs in this game