Go to phantom isle ad make sure you have at least 4 phantoms made other than ash.throww all 4 phantoms onto the big tree and stack them on top of each other like a tower. Jump to the top of the "tower" ad jum 1 more time to get a bottle mail.
P.s. Confine him with an object and as soon as he disappears, youll get that object.(good for getting weapons)
If you find it hard to win battles go back to Phantom Isle and un-equiped your fastest (but not strong attackers) characters.
Go back into the battle and send out the players that have no weapons; start going around the map with them and throw out the hardest enemies. This is good for the battle where you fight the big thing what killed Marona's parents. (Just throw out ALL the enemies besides the boss and use your strongest players to kill the boss).