A Favor, if You Will

Canon changed in the merge so Azrael’s blade is the only thing that can permanently kill Angels, and an Angel Blade only temporarily banishes them. 
Only extra powerful wings (like those of Archangels) can manifest physically, though only one of the sets of wings can do so (which is why most angels are depicted with only one set).
They’re still twins, but Michael is the older twin.  I’d say by a few minutes, but who knows what that means in celestial time.
Side characters from Lucifer are mentioned, but I don't think you have to watch the show to understand what's going on.  Probably the only relevant thing to mention is that Lucifer owns a club.

Happy Thanksgiving (if you celebrate it, and otherwise have a great day)!  I guess if you really wanted, you could see this as a holiday fic somehow...

New notes, because of the Supernatural Ending: Chuck wrote Lucifer to be the villain of his story.  But he doesn't have to follow the script.

Main Points:
Supernatural AU (now a Lucifer crossover!)
Summary: Michael begs Lucifer for help.
Word Count: 1743
Rating: Teen

 

( a tense reunion )