"A-are you sure about this mistress?" Yes, you had started to call Gianna mistress, she loved it when you called her that, it made her feel powerful, Gianna was at the minute, putting a vibrator into you as she said "yes I am" Gianna didn't want you to go too lessons yet as you couldn't walk properly, because of all the dirty things the two of you have been doing, but you did have an important test coming up, so Gianna decided to let you go to the library under the condition that you had a remote controlled vibrator inside you, you were honestly not the biggest fan of the idea since you needed to study instead of moan out in public, but you agreed since you had to pass this test, as you made your way to the Library Gianna decided to turn the device on, it was giving you sexual enjoyment, but you couldn't just start moaning out in public, the closer you came to the library the higher Gianna turned the thing up, when you sat down on a chair you couldn't hold back a small moan, but the person across from you was looking at you really weirdly now, but you ignored them and went to study, however you couldn't concentrate because Gianna was constantly turning it up and down so now you had to concentrate more on holding your own moans back then studying, you couldn't get anything done in 2 hours, so you decided to head back with a couple of books to study, just so you could prepare a bit as you entered, Gianna was there to greet you with a highest mode vibrator, you felt the thing that had previously been giving you small amount of sexual pleasure, doing as much as Gianna with her strap-on, you could see the grin on her face as she pinned you to the bed and said "what if I'd take you from the back while this was happening?" You nodded, Gianna took off your skirt and panties attached her strap on, and started moving, you were moaning loudly, the vibrator in the front, Gianna in the back, this felt so great but you were sure you weren't going to be able to walk for a bit after this, but you didn't care it was all worth it
