Fallen. That's what happened. Angels were cast out of heaven, never to come back. Just like Lucifer. No-one knows how. Few says, it was Castiel—another angel— who came to heaven with Metatron, who had taken his grace to finish a spell that casted all the angels, including you, out of heaven

After some convincing, the winchesters had let you stay in the bunker, as you get used to the human world. and more a less, mostly to help Keven with reading the Angel Tablet. He is a profit of God. Castiel is somewhere out there, purely human an angel without grace as for you, having to stay in the bunker

You weren't the supernatural being here. Down in the dungeon, a demon. The king of hell, Crowley. Chained up, stuck in the room. Never to get out unless if someone let him. Dean, told you not talk to him, or even go in there. But, they where gone for a bit, out of the bunker, on a case

Zapping into the small dungeon room. With Crowley, chained up to the seat he was in, a table in front of him. A think round metal around his neck with hadcuffs and a devil trap on the floor around him. It doesn't seem like he noticed you yet, but he had. Holding a syringe, filled with pure blood into his skin from his waist. Pure human blood was a way to cure a demon's soul, to make them feel again. Slowly getting ride of of their twisted soul. Sam told you about him, and Crowley in a rundown church. Sam inject Crowley with lots of pure blood to close the gates of Hell, but never did. But here he is, doing it himself. He looked up at you before speeking

"Can I help you?"