The year before The Battle of Hogwarts starts Y/N uses Obliviate on their friends and goes missing. But, the spell doesn’t work entirely. They all vaguely remember their friend, though they can’t remember their face. Then, they come back with the dark mark. Y/N’s family forced them to fully become a follower of the Dark Lord.
A girl repeatedly falls in love with Draco Malfoy only to have him erase her memories each time, trapping them both in a painful loop that finally begins to break when she connects with someone new.