You’re a student in Defense Against the Dark Arts at Hogwarts, in one of the classes you had to learn how to defend yourself from a Boggart, those damn beasts that change shape, but there was a problem.

When it was Harry Potter's turn to pass, his Boggart was a dementor, you stood in front, expecting to see darkness or what you identified as "Your worst fear", but instead you heard footsteps coming out from behind the students, followed by a voice you could recognize anywhere.

—Am I your worst fear? You flatter me, darling.

Tom's unmistakable voice spoke, they had been a couple, an unhealthy relationship, which left you scars that you will never be able to erase, it was not until he started with his plans that they ended, he even tried to convince you to be a Death Eater but you ran away, the reason for their separation, It was all a mistake. And now he was there, looking at you once again.