Your mind breaks

"I can only ever be myself" You reply, still staggered on the floor "Whatever you do to me, I must still be a person, a sentient thing. You can't magic me out of existence."

"How little you understand of the Arcane Arts" He replied dismissively "Or the perilous nature you are now in. Your uniqueness does not protect you, you know..." As he says this, you feel hands, covered in sweat and cum, pulling you up by the waist, rotating you so that you're face first into the cold stone floor, and ass openly exposed. Before you can fully get a sense as to what's going on, you feel your ass stretch immediately and painfully, as a hard, throbbing cock enters it.

Or...did you just shove your cock in the mimic's asshole? You see and feel from both perspectives; a truly overwhelming experience. You try to break away, pushing yourself up, but the other you, knowing every thought and feeling, grabs you by the arms and pins them behind your back. Your struggle only further motivates your own lust, and the laughter of the Dungeon Master.

"I've been in here alone for longer than you have been alive. Your company is unexpected, but hardly something I cannot do without." You feel a sudden pull at the collar, still around your throat, though the Dungeon Master isn't grabbing it, that you can see. Your other self keeps you pinned, so the **** on your neck and throat is immesurable.

"You committed yourself to me. In totality. I can cast you of exitance, with little but a thought. Not just kill you, but make it so that you were never even born. Your soul and entire existence, erased from time and space." There's an uncomfortable pause, the only sound being the continued pummeling as you literally fuck yourself, almost to ****.

"Now, you have one opportunity" he speaks quietly "what do you call someone who controls every facet of your existance? Say it loudly, and clearly"

You struggle get a word out with the **** still on your neck, you're barely able to groan out "Master" As you do, the pressure loosens, allowing you to breathe normally

"I'm sorry, pet, I'm a tad deaf, could you say that again? Who am I?"

"Master!" You call out. As you do, your other self pauses just enough to pull you up to your hands and knees, before continuing on.

"Very good. Now, ****, who are you?" His tone is direct and angry, and in a flash of your eyes, the Dungeon Master is completely naked, his cock drooping before you.

"I'm your **** Master" You lay out, honest and pleading.

"Oh, that's much too simple, even for you. Slavery is your place in the world. Your position, if you will, but that isn't you. What are you in your soul, before you came to me, what is your true state of being?"

Your mind has fogged over from the sex and the butt fucking, though you're sure you could probably never answer that question clearly. "I don't know Master." Your voice begins to have a sound of begging "Please tell me."

"You're a slut, obviously. Weren't you listening?" As he speaks, this time he physically does grab you by the collar, and shoves your throat down on his cock. He assaults you slowly but with ****, far more interested in the humiliation than the passion.

"In every version of you that exists, in all dimensions, you are defined by your skills in the bedroom, and little else. You were an unfaithful wife, a lousy paladin, and an ineffective Queen. Do you know where I found you? What your life was before I brought you to me?" He holds his cock down your throat, making speech impossible. Rather, you just shake your head with a cock in it, as best you can.

"You were nothing more than a whore. A common street urchin whose pitiful existence was dependant on the number of cocks she could please in a day. And you know what? That's the happiest version of you I was ever able to find?" He releases you for a moment. On one hand, you're able to catch your breath, on the other hand, the mirror of you picks up to a furious pace in your ass, until you somehow are able to cum again, filling your own ass more hot cum than you thought possible from a human.

"Do you believe that, ****? That your true joy comes from fulfilling your lustful and wishful desires?"

"Yes Master" You say breathily. There's nothing going on upstairs anymore beyond the superficial.

"Would you like your Master to make you happy? Give you cock and cum forever?"

"Yes Master! Please Master!"

"Good girl." He says, content and smug, withdrawing from you. "A good, jovial, stupid little slut of a **** I have now."

The library, and all manner of light fades away again, filling you with fear and dread. The Dungeon Master promised you cocks and hot cum, but even in your damaged state, you know how mischievious he is.