Very quirky
This game is a very quirky rail shooter, where you can make multiple choices for any of the girl's paths. May require some knowledge of Japanese, if you wish to 1000/1000 GS it. If you can get past what it is, there is LOTS of fun to be had. One main fault however is the soundtrack. There is only like, really 3 or 4 pieces of music that play throughout the whole game (maybe less even).