Sebastian Sallow hates Everleigh Grayson. Everleigh Grayson hates Sebastian Sallow. It has been a fact since she came as a transfer on her fifth year to Hogwarts. Three years later, the rivalry persists. She is Gryffindor Quidditch team Captain. He is Slytherin's. She is Head Girl. And he loves to get into trouble. She is a "good girl". And he is Hogwarts' bad boy. But perhaps, under all that animosity, the two of them are hiding a different type of feeling. Everything started with a List. And with an agreement.