Fics like Angelic Behavior isn't so Angelic

MOONLIGHT SONATA ON FF! Dean Winchester has a doctorate in Angelic Behavior and he decided what’s better than to adopt his own? In a world where angels, demons, and humans coexist, Dean goes to an angel reserve to adopt his own, leading him to meet one of the oldest and rarest of their species—Castiel, a dominant angel who actually descended from heaven. Castiel is anything but eager to get adopted by such a “mud-monkey” as Dean Winchester, but Dean only wants to study the magnificent creature… Oh how wrong he was. Castiel first appears anything but eager, but develops some dark feelings for the human; huge wink!kink, dom!angel!cas, kitten!Michael, S&M, sleepy blow jobs, the list goes on!

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