Excalibur

Excalibur is one of the many Holy Swords that is said to be forged by the original God. The Excalibur is one of the two Holy Swords wielded by The Legendary King, King Arthur Pendragon, of Camelot. In the past, the original Excalibur broke, and the broken pieces were made into 7 different swords with the name "Excalibur" in them.

Summary
Valper Galilei, known as the "Genocide Archbishop", previously did human experiments to find people who are able to use the seven pieces of Excalibur, and disposed those who were not capable of doing so. Yuto Kiba was one of the people involved in the experiments, which caused him to grow a deep hatred towards the Excaliburs and anyone related to it. It is later revealed that the Holy Project became a success, however there was a requirement to wield the Holy Swords: the candidate must have a mass property of light attribute or element in his/her body. Therefore, Valper removed the light property from candidates to transfer the necessary element to someone that has a capacity of wielding a Holy Sword. However due to this, he was excommunicated from the Church.

In Volume 3 of the novels, the Fallen Angel Kokabiel led his men into stealing the three remaining Excaliburs from the Church under the intention of starting another Great War. Kokabiel later defeats Irina and took her Excalibur Mimic, and orders Valper to fuse the four Excaliburs to one, limiting the number of Excaliburs to four. However, after Zenovia and Yuto break the fused Excalibur, Irina takes all of the pieces of the Excaliburs along with Zenovia's Excalibur Destruction back to the Church to be reforged.

Currently, all of the Excalibur fragments (except Excalibur Ruler) are fused into the Durandal.

Excaliburs
The known Excaliburs are:
 * Excalibur Destruction: A sword with the ability to unleash pure, destructive power that can easily shatter anything it comes into contact with. It was wielded by Zenovia.


 * Excalibur Mimic: A sword which has the ability to transform itself into any shape its user desires. It was wielded by Irina Shido and later Freed Sellzen, before being fused into a single sword by Valper Galilei.


 * Excalibur Rapidly: A sword that grants the user enhanced speed. It was wielded by Freed Sellzen before being fused used into a single sword.


 * Excalibur Nightmare: A sword wielded by Freed Sellzen before being fused into a single sword. Ability unknown.


 * Excalibur Transparency: A sword wielded by Freed Sellzen before being fused into a single sword. Ability unknown.


 * Excalibur Ruler: A sword that grants the user the ability to control his/her opponent. It is the strongest Excalibur fragment. It was wielded by Arthur Pendragon to control Fenrir, before being ceded to Irina Shido.


 * Excalibur Blessing: Ability unknown.