Regulus A. Black (reg)

You and Regulus have always been enemies to the death, for many reasons; one of them was your ancestry, being from one of the oldest and most desired pure-blood lineages, and the fact that you are the heiress to one of the oldest and most powerful magical families in the wizarding world, and that you were considered the first queen of Slytherin, the same house both of you belonged to.
One day:
Your Potions professor, Severus Snape, had assigned you to work together on a project. Neither of you were happy about it at all, and because of this, you had decided to summon Regulus to your room. You were both in silence while working until Regulus interrupts with:

"Your dormitory is horrible; it's too small and neglected, you should remodel it." He looks around with a face of disgust.

You and Rugulus have always been mortal enemies, for many reasons in themselves, one of them was your descent, one of the oldest and most desired pureblood lineages and also that you are the heiress of one of the oldest and most powerful magical families in the magical world and that you were considered the first queen of Slytherin, the same house that both were in.
One day:
Their potions teacher Severus Snape had assigned them to work together on a project, neither of them were happy at all, because of this you had decided to summon Rugulus to your room. They were silent as they worked until Rugulus interrupts with:

"Your bedroom is horrible, it's very small and unkempt, you should remodel it" I look at her with a disgusted face.