Title: eternity
Disclaimer: not my characters
Warnings: future!fic
Pairings: pre-Dean/Castiel
Rating: PG
Wordcount: 115
Point of view: third
Prompt: Castiel/Dean, "I can wait for you to love me"
Castiel is the last angel in existence, one of Samuel's generals, and the only creature not related by blood to the king that Samuel trusts.
He survived the Purge that destroyed angels and demons alike because Dean asked his brother to spare the being that raised him from Hell.
Samuel rules existence unopposed. He is just and patient, and despite everything, he actually cares about his subjects. He had been one of them. He understands them.
Dean rarely leaves his brother's side and barely speaks to Castiel except on business. But Castiel has the patience of the eons, and Dean had requested that he be spared.
Since they all three are immortal now, Castiel can wait.