Written by AngelOfTheMoor
Art by aiulbones
Fic Link: AO3
Fic Title: The Better Angels of Our Nature
Fandom/Genre: SPN, Fantasy AU
Pairing(s): Dean/Castiel, Side Pairings--Mary Winchester/John Winchester and Sam Winchester/Ruby
Word Count: 35,698
Warnings: Minor Character Death, Violence, Torture, Mention of Self-Harm, and Brief Sexual Content
Summary: In the nation of Seraphim, angels rule society, and humans are second-class citizens. Mary Winchester acquires a position as Naomi Grace's maid, and her duties include babysitting fledgling Castiel. Growing up together, Castiel and Mary's older son Dean are inseparable. But when the boys are sixteen, their friendship comes to an abrupt end.
Ten years later, Castiel and Dean meet again in an army contingent sent to put down a group of human rebels. They rekindle their friendship. But not all is as it seems, and their world will change forever.