Fresh out of Hogwarts, Dumbledore has invited y/n to take position of Defense Against the dark arts teacher. At first, it seems a little awkward for her, until she realizes she is crush hard, ion the potions professor, Severus Snape. (Takes place one year before harry goes to hogwarts)
(two years before The Golden Trio age) You received your Hogwarts letter and had started attending when you ran into Professor Severus Snape. All was fine until you found him snooping around your house trying to find out who you were. He doesn't know that you've been there for him since his birth...
You are the reborn version of Snape's long lost love Lily Potter. Your in potions class during fourth year when Snape takes a permanent youth potion, making him the same age as you. You don't know that the girl you are reborn as is a witch of many talents. You are a Animagus, you can speak Parselmouth and you can see...