User blog comment:Xhatefate/DxD Updates~/@comment-16281343-20140630100638/@comment-16281343-20140630104721

"it seem to be a "black blade of sort" specificialy used to kill god?"

Canis Lykaon's alternate name is Black Blade of the Dog God. So, Jin can probably transform into a sword or something.

And ofc it is used/can be used to kill a God since its a Longinus.