After playing the demo for some time:
Feels more like an actual fighting game than a "party fighter" like grand battle x, gigant battle
Combat is simple but satisfying
Sprites aren't very good
Sound quality on voices is really low
Buttons are the same for all characters, not much variety
Super attack animations are longer than they need to be
I'll be buying this game, but from the demo menu it doesn't look like there will be any sort of singleplayer mode. Four things are crossed out, which seem to be Create a team, Online, Shop and Extra.