User blog comment:B214/Question and Answers/@comment-1938192-20130801021905/@comment-1359322-20130801023508

@Dante, nevermind.

@Voltic, like i said he obtained the Blade Blacksmith the same time he gained the Sword of Betrayer. During the Kokabiel incident, Kiba gained the factors to become a holy-sword wielder from his former comrades. He also received a Sacred Gear ability which lets him wield and create holy-swords. As a result, he became the owner of both the Sword Birth and the Blade Blacksmith.