I picked this up and started playing it today (went through the tutorial and a few battles). This game is very different... it's told almost like a moving storybook of sorts in between battles and then once you get into the battles, you techincally aren't doing the fighting yourself. You play as a wisp (a dot which is moved with the touch screen on the bottom) and control the knights in the game.
It definately is an RPG combined with a SHMUP in how you have to dodge and collect items on the screen as the wisp. Also, they manage to throw in BINGO (I'm being serious here). The gameplay is VERY involved... I don't want to say difficult... complicated, it's just that there is a lot of things going on and controlled all on the screen area (the entire game is played on the screen, no button responses or commands, so far) and a lot of things are done all on screen.
If you're not the best at multi-tasking in games, ths may not be the best fit, but if that's fine with you then, my initial impression is give it a go.