Out of the Darkness (De-aged Snape)
*Harry raises Snape **This goes without saying but TW: CHILD ABUSE Severus Snape survives the war and spends his time in Hogwarts as a Potions master until a potions accident transforms him into a 6-year-old. With no memory of his adult self, Severus only has Harry to help him heal from his past and have a better life...