Hint #1: On the first World Map area you get on in the Parallel World, you can get an item called "All Divide" in wild battles. This item halves the damage done to you by the enemy (or enemies) and halves the damage done by your character(s) do to an anemy (or enemies).
Hint #2: When using the spell "Burn Strike" and Kyle's "Bagurenken" skill, try to target enemies in the middle so you'll hit that enemy plus the one(s) around it.

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