"Come over here."
Jeanne d'Arc the 30th (aka Durandal / Diamond Dust Witch) is an ice attribute ability user from the organization IU. During the course of Volume 2 of the light novel , she targets Shirayuki in an attempt to kidnap her and force her to join IU but is captured with the combined efforts of Aria, Kinji and Shirayuki during Adseard. As one of the conditions of her Plea Bargain with the Masters, she is forced to stay in Butei High as a 2nd year exchange student from Paris, enrolled in Informa. Both Riko and Jeanne get along with each other, and taught each other skills. She taught Riko strategy-making techniques, while learning how to mimic people's voices from Riko.
She is one of the few people that knows Kinji's secret. Her personality is serious and cool. Her first comment about Butei High's skirt is: "Unmarried girls shouldn't openly reveal their legs like this!". However, due to Riko's influence she has obtained a habit of secretly collecting maid dresses, lolita fashion and various cute dresses.
Jeanne is quite extraordinary in terms of fighting skills, beauty and ability. But, unexpectedly, her drawing skills are lackluster. Despite her battle strength, she alleges that she is the weakest of all the members in IU. Since she is an ice ability user, she can freeze various things. In the Anime , she is able to freeze anything with her breath.