Carissa

 Carissa (キャーリサ) is the the second princess of the British Royal Family and the second eldest of Queen Elizard's daughters. She launches a rebellion and overthrows her mother, but faces opposition against her younger sister and her allies. Her forces and her allies, the Knights of England, fight against Villian's forces and her allies, Necessarius, for the throne, which sparks the English Magic Civil War. During the civil war, it is revealed she carries the sword Curtana Original, which grants to the wielder the overwhelming power of the Archangel Michael.

Of the three princesses, she possess the aspect of "military affairs."

In Volume 20, she commands the military forces defending against the attack by France, and by the end of the volume, she is in a duel with the Maiden of Versailles who has the artifact Durandal. Carissa by then used her secret weapon: a shard of the Curtana Second that was chipped off when Elizard used it to duel with Carissa during the UK civil war, and can grant the wielder from the UK Royal family the power to turn it into the best weapon to defend the wielder against a attack. Against the Durandal the shard produced a sword of light with the shard as the hilt, with the narrative description sounding close to that of a "lightsaber." Carissa mentions the power of the shard is weaker than she thought it would be, even in the hands of Royalty.

In Volume 22, the shard is destroyed while fighting against the archangel. She then revealed that she held 10 more shards from the blade.

Trivia

 * Curtana's Dimensional Cleavage Formula, like other spells such as Stiyl's Innocentius, can't be blocked by the Imagine Breaker at times; but Kanzaki mentioned to Touma in Volume 18's climax that if the Imagine Breaker comes into contact with the dimension cutter attack within 1.25 seconds of its activation, it can be stopped. After that, the attack becomes after-effects of magic and can't be blocked - with the metaphor given in the narratives as Touma can negate magic fire, but can't negate the ash it leaves.