Here is my review of the first Visual Novel that i've ever played:
The characters are likeable. There isn't a single character that I dislike :). It also helps that Miley Verisse's personality is very similar to Sonic the Hedgehog's.
The music is decent.
The story is pretty good and lighthearted.
The jokes are funny (Miley's Bad Dudes vs. Dragonninja reference, the scene where she also tells Curtis to bust out some salsa with Auntie Dina and where she calls herself "The Bullet" come to mind.).
The game controls great with an Xbox 360 controller, wired or wireless, though you can only move Miley with the left analog stick.
Both translations are good :).
There is a lot of variety in the things you can do.
The graphics remind me of a Dreamcast, PlayStation 2 or Gamecube game and I like the cute moe art style :3!
You absolutely need a guide/faq to help you out, at least on your first playthrough.
Even though the music is good, it gets monotonous after awhile. I recommend playing some music you have downloaded on your computer through a music-playing program while playing after turning the in-game music all the way down in the Options menu in subsequent playthroughs.
Even though I think this game is a way past cool breath of fresh air, it doesn't have much in terms of traditional gameplay.
Overall, this is an awesome game that stands out in a unique way. I totally recommend it to fans of anime and manga (And maybe a few Sonic fans, too ;)!)! IMHO, I give this game a 9/10.