Methodically and deliberately

You let go of her cock for a moment, spit dripping down your chin. Moving forwards, you press your lips to her hilt, licking around her shaft slowly and methodically, all the way down its entire length. It takes a while, but eventually you return to the completely revealed head, shoving yourself down on it again, deeper than even before as her cock bulges out between your bare breasts, pressing up to your skin as you **** yourself with her length.

You can't help but notice how much the witch squirms in her seat as you begin to lick her shaft all the way to the end, the teasing of a near release prolonged by only the slight contact, and when you again reach her tip and take the length of her member into your mouth, she lets out a low, guttural moan of pleasure as she finally gives way and slides across the brink of orgasm.

Still in your mouth, her cock begins to twitch more violently, and she shoots a thick rope of cum directly down your throat before you're able to detach yourself from her. The cum doesn't stop, however, if anything simply encouraged on by the prospect of directly showering your face, and it practically explodes outwards. You're soaked within seconds, the thick, musky spunk sliding off your face only to make room for more to replace it. A few shots land directly on your exposed breasts, and many of the drops from your face land onto their surface as well.

Almost half a minute later, the witch finally collapses backwards, gasping for breath after the intensity of the orgasm. "Well..." she says, trailing off rather than quite finishing, "I think you've earned your reduced penalty in spades. In fact, I think you might just find you'll enjoy it." She takes a quick look around for the book, which fortunately escaped the shower of semen, but pauses before casting any spells, her cock still idling twitching between her legs, a few final drops of cum leaking onto the floor.

"You did such a good job, I'm more than happy to let you stay here tonight," she says, gesturing to the outside windows, which have started to tint orange with the setting sun. "We can talk dick stuff first, though. If you want to sleep here, I'm happy to wait until morning. If you let me use the book again, I can also offer you full customization- how long you'd like it, cut or uncut, any special features, etc. Otherwise it'll just be whatever I can cook up."