(Supernatural, season 4!) y/n was healed from a fatal wound by the angel, Castiel. Bit it was so bad that Castiel had to make her immortal to fully save her. After she was healed, Castiel stuck around. A year or two later, y/n became a hunter. Castiel and y/n were becoming friends. Sure, he was a little awkward, but he can learn. Now, 2008, 100 some years later, they’re still friends. Around that time, Castiel had raised Dean from Hell, but she didn’t know. Now he’s come to tell her.