I loved loved loved this! Poor baby Severus, so wary and ready to flinch. Harry taking care of a toddler and then a little boy without knowing much about him was wonderful. Of course the bond went all wonky -- just their luck -- but aren't we all glad it did! :D
Ah, that bit of angst in the middle with Severus looking around in disdain and seemingly being completely done with Harry totally made my heart ache.
Wonderful fic. I know I'll re-read and enjoy this again and again.