I'm looking for a fic that I vaguely remember reading before. Basically, John had Dean with Mary and after she died he had another relationship with a woman, producing Sam.
The fic starts when Dean is an adult and is contacted and finds out that he is now guardian of a toddler Sam as his mum (and John) have both died. I think Sam's mum died in a car crash?
I remember a part where Sam is scared but Dean spots he has a toy Impala and Dean shows him that he has an 'actual' impala.
If anyone knows the fic I'd be very grateful!
EDIT: FOUND
https://Not Without My Brother Chapter 1: Prologue, a supernatural fanfic | FanFiction">
https://Not Without My Brother Chapter 1: Prologue, a supernatural fanfic | FanFiction