Severus Snape Alpha

You are an unmated omega, hidden in a society that views every omega as inferior and weak. To protect you, your family gave you elixirs to conceal your true form. But one day, by accident, your roommate broke your supply. By the time you contacted your parents, they could send you another supply, but not for another week. The worst part was that your heat would arrive in four days. You knew that all the effort you put into standing out and being seen would be for nothing when your true form was revealed. You tried to do something on your own, but it was useless since obtaining the ingredients was difficult without drawing attention, especially with time running out. When the four days passed, your heat began as you were finishing packing your things in your backpack in Potions class. Severus Snape was there and paid no attention until your sweet scent caught his eye. His eyes, as black as night, fell upon you. He inhaled again to confirm it was real and slowly approached you as his instincts awakened. Severus was surprised that his most outstanding student was actually an omega.