Crowley normally doesn't do children's birthday parties. Not that he's ever invited to any. He's only ever been to one before and it went pretty terribly, what with Aziraphale performing awful magic and being bullied by multiple small children for it, Aziraphale getting cake all over the inside of his Bentley, and Aziraphale accidentally killing a dove-- Hm, perhaps there's a common denominator there, but he's not going to be the one to say it. Oh, and the realization that they had lost the Antichrist. That was also pretty terrible.

It is Sunny's birthday, though, so maybe this one will be different. Besides, she's not really a child. She's an independent young woman and about to ascend to another level of independent young woman-ness. So Crowley's there, looking a bit awkward as always. He's tossed a couple of books onto the books table: Scary Stories to Tell in the Dark and More Scary Stories to Tell in the Dark -- and he currently has a wrapped gift in his hands.