Ruins!AU - Growing Up

thIS STARTED OUT SWEET I FUCKING SWEAR.
I DIDNT MEAN FOR THE ANGST. IT JUST HAPPENED

Now that I am done justifying myself, have a new piece!

So yeah. Frisk has known Sans for as long as he can remember, but since he was never allowed to leave the ruins, they just told jokes through the door. 

Frisk also learned to walk on his toes like Toriel does, though doest do it as much now that he is older.

Everytime San's coat is fluffy signals something important that changed what he came to know as status quo:
First time was Papyrus being accepted as a solider for the war
Second was Papyrus coming home an injured vet, missing his eye and no longer able to use magic
Third was finding out his best friend was a human the whole time.

Delicious angst is delicious