I enjoyed the game it got progressively harder and kept me entertained for hours however if there was a shop in game to buy upgrades and an option to stay with one character that'd be awesome! Keep it up!!
Keitaro's first special doesn't even work. That and gameplay starts off simple with no real strategy, and stays that way. It is consistently simple to the point of becoming boring quick.
I finished it.
Personnaly, I find this game very limited. No upgrades, no choices to do, only one campaign without flexibility about heroes/spells.
With the aptitudes you have choosen for heroes you have only one tactic per hero you play (so just 4 gameplays, because you haven't let us any choice of hero).
I've already played a game like this one, an older game, and it was a lot more developped...
3/5 for your game !
I found the gameplay too complicated and spent too much time figuring things out. It wasn't exactly like what I expected.