Overall, a very enjoyable game. Polished and well made, feature complete and fun.
The game mechanics are fine - starting with no stat buffs or cards makes the difficulty curve steep at first, but some grinding get you through the punishing part.
The reward art is nice, however the scenes are all a bit vanilla. Not a complaint, just a missed opportunity that hopefully can be addressed in future releases (Sable looks like the kind of girl who would enjoy being tied up, just saying!)
The final tier or reward art is a bit of a let down. It works within the story you've crafted, but was hoping for a bit more. Again, not really a complaint - just a missed opportunity for more variety.
The only change I'd suggest is to have "next" and "previous" buttons in the picture view. Currently you need to return to the gallery to change the picture, which is a clumsy.
Very much looking forward to future releases!