Simple: you don't. Not until the end, anyway. When you fight St. Eva at the endgame, your hero will have to fight him alone at first. That's when you'll use it, and it's the only time the game will let you do so.

when all of your friends have expeat Ryu go to the island north of the place where they sell uparupa fly north that place to the island remember your friends have to dead to pull it off now just battle the giant mouster and you lv. real fast.

when all of your friends have expeat Ryu go to the island north of the place where they sell uparupa fly north that place to the island remember your friends have to dead to pull it off now just battle the giant mouster and you lv. real fast.

when all of your friends have expeat Ryu go to the island north of the place where they sell uparupa fly north that place to the island remember your friends have to dead to pull it off now just battle the giant mouster and you lv. real fast.

when all of your friends have expeat Ryu go to the island north of the place where they sell uparupa fly north that place to the island remember your friends have to dead to pull it off now just battle the giant mouster and you lv. real fast.

when all of your friends have expeat Ryu go to the island north of the place where they sell uparupa fly north that place to the island remember your friends have to dead to pull it off now just battle the giant mouster and you lv. real fast.