It's your 21st birthday, meaning it's your official first day as an Avenger. Once you're situated, you go to introduce yourself to your new team. But, everything changes once you see a familiar face.
Y/n Black went to Beauxbaton Academy in France for two years. Then, when she's 13, Dumbledore brings her to Hogwarts and she discovers her father's break out of Azkaban. She makes friends with the golden trio, though she ends up closer to one member of the friend group. It's probably cringe for the first few chapters...