When You Die, I'll Die With You - S1.E24

Kazuki retrieves the white kakugane from Alexandria and proceeds to where the battle between Victor and the Alchemist Warriors is taking place. Using his buso renkin, he forces the white kakugane into Victor; However the white kakugane fails to restore him into a human and merely weakens him. Kazuki then flies to the moon, dragging Victor with him and saves the Earth from Victor's reign.