Kyrie was born and raised in Fortuna. She is the sister of the leader of the Order of the Sword's Holy Knights, Credo, and songstress for the Festival of the Sword. Kyrie is the childhood friend of Nero, and his lover. Kyrie also carries a necklace with her that was given to her by Nero at the beginning of the game as a present during the festival. The love between Kyrie and Nero seems to have already started before the start of the events of Devil May Cry 4, but their love is used as a major plot point during the game, and used many different times.