Durandal

Durandal is one of the four Holy Swords forged by the original God, said to be on par with the original Excalibur. It is the primary weapon of Xenovia.

Summary
According to a legend, the former owner of the sword is the Paladin of the Holy Roman Emperor Charlamagne: Roland. Roland had used the sword to fight an army of 100,000 men. Thus evidencing its great strength and the reason Xenovia has yet to fully master the sword.

Appearance
The Durandal is an uniquely-shaped, single-edged broadsword with a blue blade and a golden edge. The sword lacks a hilt, and has a semicurcular guard on the left side of the handle that extends to the bottom just above the pommel, with a small extension on the right side of the handle.

Abilities
Durandal is a unique sword at the point that it responds to the user. For a user that seeks destruction like Xenovia, the Durandal releases a massive amount of aura with destructive powers. For a user that seeks precision like Yuto, the aura releases a quiet hum and is easier to control. However, Yuto still claims that the Durandal is like "a wild horse that needs to be tamed". The Holy aura of the Durandal can also be used on other weapons as shown by Xenovia when she uses it with Issei's Ascalon.

Durandal Birth
When Xenovia lended the Durandal to Yuto, Yuto fused the power of Durandal and his Sword Birth, creating the Durandal Birth which creates numerous Durandal blades from the ground.

Ex-Durandal
The Ex-Durandal (エクスデュランダル Ekusu-Dyurandaru) is an upgraded version of the Durandal, fused with the Excalibur fragments under the Church which functions as a sheath. The Excalibur fragments can be materialized to be used as an additional sword. In Volume 11, the Ex-Durandal was shattered by Sousou's True Longinus. However in Volume 12, the Ex-Durandal is repaired and fully completed after gaining all seven Excalibur fragments. It is said that upon mastering the Ex-Durandal, Xenovia will be able to use the special abilities of the individual Excalibur fragments, and will have enough skill to fight against Sousou's sub-species Balance Breaker on an equivalent level.