1- Decisions dont count: The decision making is pointless it doesnt matter what you do the story is basically the same with some different endings. The only decisions that change the story is the subjects you study and your grades.
2- Youll never visit other house than Chinatsu: Then why the map says girls houses?
3- Trying to decide gets boring and frustrating: If you try to date other than Chinatsu, dates are boring. You cannot date all girls in all places and dates are equal with all girls.
4- I notice you havent update the game since August 2015. The game is crashing.
5- Its pointless buying: If I go out with girls Ill have the same reaction if I buy the cheat tickets or the expensive ones and the in game buying things are unnecessary. Nobody wants to buy something just to have a lazy happy ending.
Why I gave 3 stars? Well, your idea was good, the art is cute the whole thing of freely going to places, dating different girls, decision making its all great but it needs work. I hope you take time and update it or make a new game with all these things in mind. Wish you the best of lucks!