Sword Birth

Sword Birth, also known as the Creation of the Demonic Sword, is a Sacred Gear wielded by Yuto Kiba.

Summary
Sword Birth is one of the two Sacred Gears used by Yuto Kiba.

Abilities
Sword Birth has the ability to create numerous Demon Swords of different attributes according to the will of the user. When strenghten by the Boosted Gear Gift, Yuto can create countless Demon Swords from the ground to attack the enemy.

After gaining the Sword of Betrayer, the Sword Birth can be use to create Holy Demonic Sword of different attributes.

Holy Eraser
Holy Eraser, also known as the Light-Devouring Sword, is a Demon Sword that devours holy energy. He first uses it against Freed Sellzen.

Flame Delete
Flame Delete, also known as the Flame-Freezing Sword, is an ice Demon Sword that devours flame. Yuto uses this sword against Karlamine in the Rating Game between Rias and Riser.

Replenish Calm
Replenish Calm, also known as the Wind-Calming Sword, is a Demon Sword that absorbs wind. Yuto uses this sword against Karlamine in the Rating Game between Rias and Riser.

Sword of Betrayer
The sub-species Balance Breaker of Sword Birth, the Sword of Betrayer (双覇の聖魔剣（ソード・オブ・ビトレイヤー） Sōdo obu Bitoreiyā), is a fusion between a Demon Sword and a Holy Sword. It debuted during the fight with Freed after Kiba "merged" his Sacred Gear with the spirits of his fallen comrades who were the victims of the Holy Sword Project. The creation of Kiba's Sword of Betrayer became possible after both God and Satan died in the previous war, thus ending the balance between Holy and Demonic powers which allowed the "Holy Demonic Sword" (聖魔剣 Seimaken) to become possible.