Severus snape drawing

A new teacher comes to Hogwarts, (y/n). you where best friends with the cute kinda emo Snape but you lost contact with him after leaving school. Coming back you meet Snape again. What will happen? It follows the years which Harry Potter is in school so it's abit long... It now also includes added bonus scenes at the end, inspired from one tik tok account which is linked in he chapter it starts.