It was late in the evening, and Zakula was walking alone on the steps of Ravenclaw Tower to catch up on his astronomy homework. When he reached the top floor, he suddenly found that it was a full moon. The bad news is, his succubus blood will make him want to have sex. The good news is, there's nobody here right now. He decided to endure the night alone and wait for the day to come. But at that moment there was a sudden sound of footsteps coming from under the tower.