1) The specific fic may have been a comment meme fic. I believe it was very short. But it had Michael (maybe Gabriel and Lucifer) as humans. They end up adopting Castiel and Balthazar who were their abused half brothers. I remember these two boys being terrified of their closet (that is how they were punished) so Michael dry walled the closet and got them a dresser instead.

2) Any hurt!Castiel centric fic. I've read everything under the 'Hurt Castiel' AO3 tag. So fics outside of AO3 or not tagged as such would be best. Bonus for people (Sam, Dean, Bobby, Gabriel, Lucifer, whatever) taking care of Castiel. This one can be any pairing OR Gen except Sam/Dean (Wincestiel is fine).

3) Dean/Castiel OR Castiel/Sam OR Dean/Sam/Castiel which has a part about people (Bobby, Mary, angels, strangers) finding out about their relationship.

Thanks!