u hav to get the sun crest and sun sigil... sun crest, er sorry to tell u but u hav to KILL Dark Bahamut at the zanarkand ruins, i tell u, hes EXTREMELY HARD!!! it happened to me forgetting to get the sun crest after yunalesca train up heaps and kill it. Sun sigil, from the chocobo race, get the time to 0.00.00 , get it with at least 15 ore more baloons and dodge every bird, with ur time around 30-40 seconds, then u will hav the sun sigil as ur prize, then customise them 2 on ur caladbolg with ur celestial mirror at the macalania woods.