The Holy Swords (聖剣 Seiken) are weapons infused with Holy power and are considered to be the ultimate weapons against Devils and also Fallen Angels.
There are two types of Holy Swords in High School DxD:
- The first type of Holy Swords are the mass produced light swords used by exorcists to exorcize Devils. As the name suggests, these swords have blades made from pure light. They are the more basic of the two types.
- The second type of Holy Swords are the "true" Holy Swords wielded by legendary heroes, such as Excalibur and Durandal. Unlike the normal light swords, "true" Holy Swords requires humans with high amounts of the light element inside their body in order to wield them, as such only a few people in a decade or so get chosen.
For a human person to be able to wield a true holy sword, they must inherit the Property of Light at a Blessing Ceremony.
As the Holy Sword uses holy power as its source, it is extremely powerful against Devils, and by extension the Fallen Angels. Small scratches from Holy Swords are enough to cause lethal damage to Devils and Fallen Angels. However, only a select few with the inborn ability (stated to be a large amount of light attribute) have the capability to wield a "True" Holy Sword. Holy Swords that are broken can be reforged as long as the core is still intact, as shown in the case of Excalibur. It is also possible for two different Holy Swords to be fused into one, as in the case of Ex-Durandal.
Each Holy Sword has great offensive powers when compared against a normal sword. Especially those forged by the God of the Bible and the Kusanagi.
These are the Holy Swords of legend.
Excalibur is one of the two Holy Swords wielded by the Legendary King of Britain, King Arthur Pendragon, of Camelot. It was broken in the war long ago and reforged into seven swords through alchemy. Two swords each were stored by the Catholic Church Headquarter Vatican, Protestant Church, and Eastern Orthodox Church.
In Volume 3 of the light novels, Kokabiel and his men stole an Excalibur from each Church. Shortly after stealing Irina's sword, the four stolen Excaliburs were temporarily fused into one by Valper Galilei. The fused Excalibur (wielded by Freed Sellzen) was broken by the combined forces of Yuuto's Sword of Betrayer and Xenovia's Durandal. The broken fragments were then retrieved by Irina back to the Church to be reforged. The Excalibur fragments under the Orthodox Church were later fused into the Durandal as "Control Parts" for Xenovia, who was still unable to fully master the Durandal, to help protect the Peace Treaty between the Angels, Devils and Fallen Angels from terrorists and outside forces.
The known Excaliburs are Excalibur Destruction, Excalibur Mimic, Excalibur Rapidly, Excalibur Nightmare, Excalibur Transparency, Excalibur Blessing, and Excalibur Ruler. The Excalibur Swords were fused into the Durandal.
Durandal is a Holy Sword that was previously wielded by the Paladin of the Holy Roman Emperor Charlemagne: Roland. Roland had used the sword to fight an army of 100,000 men. It is a Holy Sword that is said to be on par with the original Excalibur. It is a sword with destructive powers that cannot be compared and has the ability to cut through anything when wielded by a master. It is the main weapon of Xenovia; however due to the sword's immense strength, as shown by Roland, she has yet to fully master it. The Durandal was later upgraded into the Ex-Durandal (エクスデュランダル Ekusu-Dyurandaru) by using the remaining Excalibur fragments which function in the form of a sheath. The Excalibur fragments can also be temporarily separated and materialized as additional swords for Xenovia's use. The Ex-Durandal was shattered in Volume 11 by Cao Cao, using one of the True Longinus' Seven Treasures, but was repaired and fully completed after gaining the final Excalibur fragment that was previously owned by Arthur Pendragon. As of Volume 19, Xenovia uses Durandal in combination with Excalibur for her dual-sword style.
Ascalon is a Holy Sword previously wielded by Saint George, the Dragon-killing Saint. Unlike the other Holy Swords, Ascalon specializes in killing Dragons and is named the Dragon Slayer (龍退治の剣（ドラゴンスレイヤ Doragon Sureiyā). It was passed on to Issei in Volume 4 by Archangel Michael as a sign of peace between the Three Factions. However, members of each faction had to use various spells, alchemy, and powers to allow Issei to wield it without being damaged by the sword's Dragon Slayer attribute. The sword is usually stored in the Boosted Gear and can be summoned in battle. Issei, however, rarely uses the sword and mostly lends it to Xenovia during fights. Issei later learns how to channel Ascalon's Dragon Slayer power into his attacks.
Caliburn, also known as Collbrande, is the other Holy Sword wielded by King Arthur. The Sword in the Stone known as the Holy King Sword (聖王剣 Seiōken). It is the most powerful Holy Sword to be created, possessing sharpness and destructive powers that surpasses even that of Excalibur and Durandal. It is currently owned by Arthur Pendragon, a descendant of the original King Arthur.
In the anime, Arthur reveals Caliburn has power over space and dimensions.
Ame no Murakumo no TsurugiEdit
Ame no Murakumo no Tsurugi (天叢雲剣, lit. "Sword of the Gathering Clouds of Heaven") is a Holy Sword of Shinto legends that rivals the original Excalibur and Durandal. It is also known as the Kusanagi no Tsurugi ("Grass-Cutting Sword"). Unlike the other Holy Swords, that are said to be forged by God, the Ame no Murakumo no Tsurugi was found inside the body of the legendary 8-headed Evil Dragon, Yamata no Orochi.
It appears in the short-story published on Dragon Magazine, where it was broken and is undergoing repair. In Volume 18, Qlippoth used a portion of the Yamata-no-Orochi's soul to repair the broken Ame no Murakumo and gave it to Masaomi Yaegaki, a former Exorcist of the Church for his revenge. After Yaegaki is defeated, the broken Ame-no-Murakumo is taken back to continue its repair.
Totsuka no TsurugiEdit
Totsuka no Tsurugi (戸塚の敦木, lit. "Sword of Length of Ten Fists") is a Holy Spirit Sword from ancient times.
It appears in the short story published in Dragon Magazine, Let's go with Training.
A Holy Sword previously used by Olivier. It is currently owned by Irina after being given to her by her father, stating that she was the most qualified to wield it. The sword has the ability to purify even those that are cut by it.
Galatine is a holy sword considered to be the sibling sword of Excalibur, it is a unique blade whose blade can never be nicked. Its original carrier was Sir Gawain, a member of the Knights of the Round Table.
- Irina's family had possession of a Holy Sword during Irina's youth, though its identity is unknown as it does not resemble any of the known Holy Swords.