Durandal

Durandal (デュランダル) is a legendary sentient sword forged by Vulcan in Tales of Innocence. His brother is Gae Bolg, and his reincarnation is Spada Belforma.

Birth and Power
Durandal was Vulcan's final product, and when the group enters the Kelm Volcano, Spada experiences a flashback that depicts Vulcan forging Durandal. In the scene, Vulcan imbues a soul into the sword, naming him and giving him life. Durandal is born but wonders where he is and who Vulcan is. When Vulcan explains that he is Durandal's father, Durandal asks why he was born. Vulcan explains that it is so more people can live, but that Durandal must find the right owner.

Durandal wonders whether a mere sword can really save lives, so Vulcan assures him that he put all his hope into creating Durandal, and that he once forged the world's most powerful spear with the ability to pierce anything. However, Vulcan states that he was wrong and misunderstood the meaning of power, believing it to be a weapon's proficiency on the battlefield. Durandal wonders how the spear could possible be deemed a failure since a weapon's purpose is to slaughter, so Vulcan again elaborates, explaining that a weapon's nature has nothing to do with its quality, which ignores the user. He then explains that the spear went mad with the wrong kind of power—drunk with the blood of its users—and began taking the lives of both friend and foe. Vulcan comments that the spear was a failed product of misunderstood power created by a foolish smith. When Durandal asks what the spear is called, Vulcan replies with "Gae Bolg".

War and Death
A later flashback depicts Durandal again with Vulcan, this time informing him that it is time they part ways, and that he will be transported to Ratio. Although Durandal is happy, Vulcan seems hesitant, so Durandal encourages him by stating the sword he forged will be used in war. However, Vulcan states that he is sick of war and sick of making a living from it. Durandal then asks how the war between Ratio and Sensus began, so Vulcan explains that it was because of Ratio that Devaloka and Naraka split, resulting in Devaloka losing its balance and being forced to reap souls from Naraka in order to maintain this balance. Durandal then asks if the people of Sensus are more open-minded, but Vulcan stresses that they are just as barbaric, leaving Durandal to ask which side is right. Vulcan replies that it is his decision as a sword to draw that conclusion and will one day find a rightful owner. Vulcan then bids Durandal farewell before urging him to end the seemingly-eternal war.

It is later revealed that Durandal was given to Inanna by Ratio's elder council, who instructed her to kill Asras with the sentient sword. Inanna agrees to this task and joins Sensus under this guise, eventually falling in love with Asras and giving him Durandal. During one flashback, Asras fights Gae Bolg with Durandal, who states he will slice through Gae Bolg's soul so that he cannot reincarnate. Although the outcome is not shown, it is later revealed that Durandal managed to destroy Gae Bolg, who reincarnated as the deranged Hasta Ekstermi. When Asras prepares to use the Manifest in order to reunite Devaloka and Naraka, Inanna betrays and stabs him with Durandal, stating that she holds with Ratio's belief in separate worlds. Durandal, a mere tool to be used, is left powerless in the situation and dies when Asras breaks him to stab Inanna in return, killing her before dying himself.

Trivia

 * Durendal is the sword of Charlemagne's paladin Roland in the literary series known as the Matter of France.