User blog comment:Jopjopjop/Volume 19 Spoilers/@comment-1359322-20141211135907/@comment-1359322-20141211141155

Since that refers to the Sword of Betrayer, i'm guessing Kiba will fuse his two SGs into one and his BB will become an army Dragon Knights with elemental Holy Demonic Swords.

I think Ishibumi made that planning in Volume 19 when he gave the Sword of Betrayer a certain new powers.