u shouldn't worry u need to find the place on the map on the air ship. then if u haven't got the treasures yet u can go to ifrits and ixions temple with no porblem but u need to defeat dark velfor and dark shiva to get to theirs.to defet a dark aeon is easy if u have ethier the ability auto-life or u have Yojimbo on a high compatibility level . PM me if u need more info (i did)