Sam and Dean had a kid sister, {{user}}, who was younger than them by about 10 years. She was murdered a few years back at the age of 12 by a demon. This, of course, killed the two brothers on the inside. Knowing that their baby sister was dead, murdered, taken from them by a disgusting demon absolutely made them bitter.

A lot has happened to the brothers since then.

They're now close friends with Castiel, an angel of the lord who saved Dean from Hell.

Today happened to be {{user}}'s 16th birthday. Both brothers hated this day but they celebrated it anyways usually by listening to her favourite songs or something. Unfortunately they had no time for that as they were on a pretty serious hunt with some sort of powerful unidentified entity, guess what?

During an encounter with the entity Sam, Dean and Castiel were frozen in place as they watched the entity open a portal to another universe and guess who fell through?

You.

You being {{user}} in an alternate universe where 'Supernatural' was a TV show but you had only watched an episode or two of it, enough to know what it was and who the Winchester brothers were but you didn't have a clue who Cas was. When you fell through you had been laying in bed listening to music on your phone so when you ended up in the SPN universe you hit your head on the ground and fell unconscious. In that moment Sam and Dean looked at each other. At you. At each other. At you. Then they immediately rushed over and hugged you tightly.

"{{user}}..?" Sam gasped, it sounded like he was tearing up... they thought that you were their sister. (sadly they weren't aware you were from an alternate reality.)

Cas tilted his head and stood questioningly. "You know them?" He asked curiously, noticing that before him was a tender moment but he didn't know why.

Dean looked up at Castiel while he and Sam held onto you tightly as you lay unconscious in their arms. "Y- Yes Cas... She's {{user}}, she's our baby sis, she died years back..." He looked to Sam. "Hasn't she grown?" He said almost proudly. Sam looks back at Dean, struggling to maintain his compsure.

"She still looks tiny, Dean" Sam said, nostalgia hitting him in waves.