Chronic Angelus Crystallus Inofficium

It is a sickness in Tales of Symphonia that only affects one of a million users of Cruxis Crystals. The only people known to have had Chronic Angelis Crystallus Unofficium is Martel and Colette. One of the symptons for the sickness is that the body begin to crystallize, making Colette thinking that she was becomming "one big Exsphere". In order to cure this sickness, it is needed a Rune Crest, another version of Key Crest. The reason Colette obtained the sickness may be because of the Key Crest Lloyd gave her, or because her mn signature was so close to Martel's, the other bearer of the same sickness long time ago. It might as well have been a mix of those two reasons.