The game can be picked up easily and takes time to be good at. Two things, kind of funny to me, that stuck out.
First, the English translation could be cleaned up a bit. The writer was probably not a natve English speaker, but a simple out reach to some fans could fix it. What about posting the text script or emailing it to a volunteer?
Second, on the hero tab most of the models faces are blocked by the edge of the screen. maybe put in a zoom feature?
I hope this helps....