This page is missing dialogue at one point or another: Other than that, the page should be totally complete, but at some point we need to add the dialogue. If you know any of it, chip in, every bit helps.
You must defeat Violet Arrow. To win this fight you will need to survive his attacks for 10 turns as he progresses through his ten Leniency states. Once he reaches the tenth and final state you will win the fight.
Water and air resistances will help you survive, but you don't need high resistance to win. Just make sure you are playing defensively, as in healing, shielding and protecting yourself as much as you can.