Specialisation [Fic] [3rd person narrator] [Fem reader] [m/m] or maybe [m/angel] since it's [Sam Winchester] and [Gabriel] [Tentacles] [Bondage] [Breathplay] This is a little porn-with-a-plot fic I found on AO3, by the very talented entanglednow (https://archiveofourown.org/users/entanglednow/pseuds/entanglednow) fic link: https://archiveofourown.org/works/151403