Formally a member of the Ivory Tower Curro was presumed missing in action after he went to treat the wounded out in the field and never returned in the early stages of the war. Instead he had happily defected to the Azure Tower where a member of the Inquisition Sakurai Kuzuryu.

After a couple of years as the man's faithful shadow Curro was inexplicably and suddenly promoted to Guardian Inquisitor, above his former master and was banned from further contact with the man. Now free he began a life of his own and seemed for a time to flourish even keeping his cool when the former Azure Arche vanished.

Since the end of the war Curro has become a slave to his work, retreating to the comforting arms of distraction after his long time partner left him to follow his dreams in the Vermillion Tower.