Wonderful game!
Absolutely spectacular! Listen, if you're having problems with the game being too difficult, try what I do...
Magic Up 3 times for 3 turns. After that Magic Up twice and then cure yourself. Next round magic up 3 times, and next round use Strike (offensive magic). If it did 500 damage, good, if not, keep magic-up-ing/curing. Once cure does 500 health, and strike does 500 damage you can't really lose with some good maneuvering.