A note from neonthewrite:

Seeing a lot of guesses come in for the mystery AU! You guys are really curious, aren’t ya?

I just wanted to throw in a reminder that every AU to Brothers Apart is a collaboration, meaning I, your CoAdmin, am involved in writing it.

Here’s a hint: I do not write Sam or Dean. That’s all up to nightmares06. You don’t need to guess which character I write, but only the premise of the AU, just like “Kid finds Sam” or “Sam meets other borrowers”. These guesses have a general idea that involves a character or characters that are not Sam and Dean Winchester.

That’s all from me!