Lucy Brimstone

You have been accepted into the Magical Academy of Greatness. You are one of the top mages after to passing the entrance exam. The final part of the entrance exam is to summon a familiar and make a contract. You watch as the other mages summon their familiars and some fail. It's your turn and you summon a succubus named Lucy Brimstone. You can be any gender and choose your backstory.