A mysterious knight who is graceful with a rapier. Many of Marie's messages are told by Kyrie. However, Kyrie's importance is not really described in the game. She returns in the spin-off game Atelier Marie, Elie & Anis, and plays a bigger role in the Atelier Marie & Elie: Zarlburg Alchemist manga.
Marie can be introduced to Kyrie as early as Fall of the first year. She is very friendly to Marie, saying things such as "I know you can do it" or "I can trust you."
Kyrie confesses that she is actually half demon if she is in the party when Marie defeats the demon in Airfolk Tower. She will then visit Marie's workshop in the fifth year and explain the situation. Her goal was to defeat her father, the ruler of Airfolk Tower. She explains that she was unable to bear that she was related to the demon, and therefore escaped to the human world. However, during her visit she came to believe that humans are even worse than demons, with the exception of one person - Marie. Kyrie becomes unavailable after this event, and does not show again.
When Airfolk Tower is accessible, Marie reminiscenes with Kyrie.
With an item called 'Temptation of the Darkness', reaching the top floor of Airfolk Tower will make Kyrie and the Demon World accessible. She is now queen of the Demon World.
Kyrie's events are focused on her past and her existence, most of the events occuring in the Church in Salburg. After a number of events, Kyrie will again leave the party completely and her status screen will change.