Even if XIII didn't acquire it, I still love the music that it has (especially the three final boss themes and the regular battle theme).
Anyway, I just love the look of this game, Lil Vivi. I could care less that it is a fangame or whatnot; go and do what you want, as it is yourself that you will need to please the most in the long run. Not that many people take an interest to my games anymore, but I still churn them out because it is just so fun.
The style you have going, as well as the music that you have showed us and given us a sample of all looks and sounds great. I will definitely try this when you're able to release a demo!
Other than that... that is about all I can say! I just wish you the best of luck with this, and hope that you are able to complete the game in the future.
Check out
Eternal Paradise, my latest RPG Maker 2003 project, over at
RMN!
http://rpgmaker.net/games/1914/