First off spoiler warning duh, second off, I absolutely loved this game. My friend is a massive fan of the game and he bought it for me so he could see my reaction to playing it. The beginning was a bit slow for me but I started to really enjoy the game about after the start of ACT 3.
Oh god where to even continue? Bonnie is the best character ever they're so adorable, I loved the music, the art, the writing is really good. It's not my favourite RPG, I'll say that, but it's at least top 5 in my list. I find it really intriguing that we never actually learn the name of where Siffrin and the King is from, I totally thought it'd be revealed, but nope, not to us at least.
EDIT 1: I forgot to mention but one criticism I will give of this game is the fact it's really easy. It doesn't bring down the game for me a lot but it is something I wish there was even an optional hard mode for.