A secret side-quest was discovered 13 years after the game's release. It involves talking to the Nero brothers a multitude of times while following specific boss battles and story triggers within the final dungeon. The only time this quest was ever outlined was in the Ultimania guide for the game, only released in Japan. There was no reference to the side-quest in the notoriously poor Western strategy guide or the PlayOnline hint website it frequently directed its readers to.