Holy Demonic Sword

The Holy Demonic Swords (聖魔剣 Seimaken) are blades originally forged by Yuuto Kiba's Sacred Gear, Sword Birth.

Summary
The Holy Demonic Swords were originally created after Yuuto Kiba achieved the Balance Breaker of his Sacred Gear, Sword Birth. In Volume 12, the Heaven manages to mass-produce prototypes Holy Demonic Swords based on the one given to them by Yuuto Kiba in Volume 4 but the mass produced ones lack variety and are not as powerful as the one used by Kiba. Because of the characteristic of the Holy Demonic Sword resulting from the absence of God, it can only be used away from the Vatican and Heaven.

Powers and Abilities
Holy Demonic Swords have the qualities of both Holy Swords and Demon Swords. This fusion of opposites powers became possible because of the death of the original Four Great Satans, and the God of the Bible who are the rulers of the Holy and Demonic Powers, effectively ending that balance. It also makes them more powerful than a normal Holy Sword or Demon Sword of the same type would be.

The Holy Demonic Swords produced by Sword Birth are as powerful as four of the Excalibur fragments combined.

Trivia

 * Irina, who possesses one of the mass-produced Holy Demonic Swords, has stated that they cannot be used in Heaven or near the Vatican.