Not too bad
It seems a bit shallow, to say the least. I encountered several bugs (like you've mentioned) and overall I thought the game was just....meh. I agree with the last guy that said that the girls appear a bit manly. I think that, while the drawing isn't in anyway bad, they just seem a little bland. Also I think the worst part of the game was the music, which caused me to mute my speakers after a few moments. Do not get me wrong, this is still a really really good piece of work. I just think that maybe the sim-date genre is getting just a wee bit stale...
Also, I see you've never played any of the games, but let me just say this. Once you have, try to fit in a bit more characters, possibly Rikku or Paine.
Anyway, good luck with this!