Long distance battle is the key here. Move in close for a second every time someone has there overdrive than retreat immediately. Once he has reached 8000 hp he will start to fly at you. You should now kill him asap. I used spare change to take out 9000 of his hp easy. If you don't want to waste your money go crazy with overdrives. Try to keep everyone on haste too! That is the only way I won. Hastega works best.
Lets live together, I don't know how long it will last, but it doesn't have to be for show, together, till death do us part. - Kenshin "Shinta" Himura - Rurouni Kenshin