Title: A Series of Somewhat Unfortunate Events (Depending Upon Your Point of View)
Characters: (deaged) Sam and Castiel, Dean, Kevin Tran
Warnings: crack!fic, de-aging (see prompt), takes place loosely around Clip Show in Season Eight
Word Count: 3500
Original Prompt: Prompt 1: I would love something with de-aging of Cas (well, his vessel anyway), Dean, and Sam in the vein of "A Series of Unfortunate Events" with a young Dean who thinks on his feet to improvise tools, younger Sam who knows way too much about everything, and baby Cas who likes to bite smite things.
Summary: Both recovering from recent events between the second and third Trials, Sam and Castiel happen upon a disused magical laboratory in the Men of Letters Bunker, with rather interesting results. And of course, Sam wants to share everything with his idolized older brother - including the effects of a de-aging potion, much to Dean's dismay.
A/N: I wanted this to be far more polished and to incorporate at least one more of the awesome prompts I was given, but simply ran out of time due to Real Life issues - hope it suffices anyway. :) There is an in-progress Part Two forthcoming at some future date, which will feature all three de-aged characters.
Amazing art by amberdreams below the cut, due to flashing image - warning for that and for slight story spoiler, though the prompt itself is basically the same spoiler.