Watching the movies~ Kol Mikaelson

We know the story of Harry Potter but what if he had a twin. What if the twin was a reincarnation of someone who was married. What if she was the fifth founder of Hogwarts. What if she was the mentor of Salazar Slytherin. So the story is the golden trio era sent movies to the Marauder era so they can change their future. You also have a cross over from the originals the very first vampires Finn, Elijah, Klaus, Kol, Rebekah Mikaelson. She loved them very much until her death where the 5 watched her death.