[@Amphibious Assualt]Kaze and I are friends. Rokku is my twin brother.

You seem to be getting your facts mixed up. on his CS, though. In the episode that they mention excalibur, they do talk about dragons. They state that there are very few, if any, dragons left living. Plus, I do believe Dean does kill a dragon in that episode. Kaze says 2. He may be dyslexic, but Kaze has an eidetic memory.

The demon daggers that a lot of them carry can be used to kill other demons.

Rokku and I are both currently working on Season 10 and have both watched every season prior.

We see multiple angels with the swords, not all of them are grigori.

As for his backstory, it was not a human vessel they shared. He had me help him with it so I can tell you for sure the body the demon possessed was the angel's body.

As for our collab post, it was a quick way to get both of our characters into the story. Our normal posts won't be like that.