In star ocean last hope how do you get the wind ring

You get the wind ring on en ii (near the end of the game) {slight spoiler} first talk to a lady standing near one of the shops in centropolis, she is standing near a ivy chest (green). She will ask you to open the chest. Go to the graveyard at the back of centropolis and search the tombstones, one will say he left the ring with the guardian (something like that), than go up the graveyard stairs and interact with the tree. There it is...