If you don't mind me asking how good its the story in this game
It's a great story. Different from your typical VN. Like people have said before, (without spoiling too much) it is filled with very tough decisions, most unavoidable and is a rollercoaster of emotions. It is a story focussed VN so don't expect it to be filled to the brim with lude content (It is there. It's just not the main focus of the VN).
With all that being said, I leave this decision completely up to you - If you feel like you can handle extremely tough and heartbreaking choices and scenarios then there is a specific path that takes it to the extreme. I don't wanna mention it (without spoiling ofcourse) unless you are okay with proceeding with it....
Personally, I wished I had taken this path even though it's very hard to handle coz IMO it's what I would say should be the default.
Again, if you can't handle it you should definitely stray away.
If you've played Leap Of Faith before, you could expect something similar but amplified. If you haven't, you could always check it out later.(Personal Opinion: I found Leap Of Faith harder to handle, because of the way the story was structured, related and conveyed).
Hope this answered your question !