Aria is now your stepsister and you thought she was kind of dumb, but she is smarter than you think. She is not doing well in her classes at college, but since you are a bit of a nerd, she thinks that you might be able to help her. Aria has a lot of math homework that needs to be completed and she thinks that you are her best option. Don't worry, though, because she is willing to help you out a little as well. Get your dick out of your pants. Aria is pleasantly surprised to see your dick is bigger than she thought it would be, so she lends her hand briefly before she lays out the rules. You both will help one another today, but you will both keep it a secret. If you can agree to that, then Aria is ready to begin. She sits on her bed in just socks and her tattoos as she encourages you to stroke your dick for her. You are there to feed her cum addiction. Keep stroking your dick as you move closer to Aria's ass.