Snape dies & wakes up in his own body (maybe 5th year?) and decides to do everything better - he sets up a potions lab in his backyard, makes friends with his mom, rescues a muggle kid from some faeries and keeps some extra faeries in a cage. I think some birds follow him. AO3, incomplete. I think updated within the last 6 months. Anyone know the name?
I’m bumping this since we never found the answer. Though of course no idea if adding a comment makes anyone more likely to see my question.