Quarta, Xenovia

ゼノヴィア・クァルタ

Xenovia first appears in Volume 3 alongside Irina, acting under the Church's orders to retrieve the three stolen Excalibur swords. She and Irina form a temporary alliance with Issei, Koneko, Yuuto, and Saji; their agreement is to recover the stolen Excalibur fragments while allowing Yuuto to destroy one of them. During the battle against Freed Sellzen and Valper Galilei, she reveals herself as the wielder of Durandal. She quickly turns the tide of the fight by destroying the fused Excalibur and cutting down Freed. Following the battle with the Fallen Angel leader Kokabiel, she becomes a Devil under Rias after discovering that God has died.
Upon her introduction, Xenovia is portrayed as having a quiet and serious demeanor, prioritizing her mission and speaking only when necessary. She also prefers to avoid problems that do not concern her. Although she is a faithful member of the Church, her beliefs are flexible enough to accept help from a Dragon, such as receiving a free lunch (after Irina spent all their money on a fake painting of a Saint). She aims not only to accomplish their mission but also to survive afterwards. After Volume 3, she develops a very close relationship with Asia, being touched by her kindness and apologizing for calling her a witch during their previous meeting. Like Asia, having been raised in the Church, she lacks common knowledge about normal life, which is evident when she brings a box of condoms to school.
As a Knight, Xenovia can move at superhuman speeds. Combined with the destructive powers of Durandal, this makes her a formidable fighter. She also has the ability to tap into Durandal's holy aura using other swords, as seen when she uses it with Issei's Ascalon (Issei allows her to use it because he is not a good swordsman and because she cannot fully control Durandal).

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