Woken by sister's masturbation

For the most part, as you slept, your own dreams were really sexy and erotic. Your latest one revolved around your enjoyments of your new pets and them pleasuring of you in your new home. You were having the time of your life, watching from both a 1st and 3rd POV, until, from some strange reason, your sister, Catherine, walked in on you and your pets. The dream you looked at Catherine confused for a moment before inviting her to join you. She then stripped down and joined your other pets in pleasuring you by sucking on your breasts. It was almost like it was real. The feeling of her lips your nipple was like a erotic spa treatment. Dream you decided to congratulate her on a doing so well by stroking her cock. As you continued to stroke it, you you started to feel that Catherine's moans of ecstasy and the warm feel of her cock seemed a bit "too" real to be fabricated by your dream. With that thought coursing through your brain, you **** yourself to wake up. Upon waking up and opening your eyes, you saw something that you never thought you'd ever witness.

In front of you, laying on your bed, her top fully unbuttoned and pj shorts hanging around her ankles, was Catherine pleasuring herself. She had her left hand groping her breast and moaning with each pinch of her nipple, but that wasn't what had your attention. Wrapped around her right hand, she had taken your own right hand and was having you jacking her off. As you started to realize your situation, you began to hear what Catherine was saying.

"Oh, yes. Yes. Keep doing that, big sis. Just keep stroking my big, slutty cock. Please, make me come all over myself."

You couldn't believe your ears. Your sister was using you to get herself off and even imagining that you were doing all this yourself.

"Yes, yes. Make this slutty, whore cum. I promise to make you feel good too. Just let me cum."

There were so many questions that you needed answer, and you weren't going to have them answered unless you took control of this situation right now. Therefore, as she brought your hand all the way down her shaft, you exercised control and tightly gripped her cock. She yelped as she felt your painful grip before a look of horror fell on her face and slowly turned her head to your deadpan face.

"Having a little midnight fun, are we?"

"Ni-Ni-Nikki?"

You could see the look of fear on her face as she looked at you. For a moment, it looked like she was about the scream until you pressed your left index on her lips.

"I think you should stay quiet. Now, here's what's going to happen. I'm going to let go of your cock and then got off this bed. While I'm pulling the chair, from my desk, over to the side of the bed, you are going to pull your shorts up, fully button your top again, and sit straight up on my bed. Once I'm seated again, you and I are going to have a nice, and apparently, long deserved chat. Nod if you agree."

Catherine nodded slowly and, once you let go of her cock, you went about following with what you said, by the time you came back with your chair, Catherine was sitting respectfully on your bed with her clothes back on, even if her face was still pretty red. Once you were seated, you sighed and looked at her concerned.

"I believe I deserve to know the real reason you want to come to my college to learn."

Catherine looked down ashamed and then looked back at you, with tears building up in her eyes.

"I suppose you do."

"Let's start with why I woke up to you masturbating in my bed and using my hand to jack you off."

"*sigh* It's because I'm in love with you."

"Okay, are we talking love as in, 'I love my sister as family,' or love as in, 'I love my sister and want to marry her?' If it's the first, then we need to have a discussion about proper boundaries, but it's the second, then I think going to need a explanation as to how it happened."