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by MasterKing1


I stood outside the doorway, preparing myself to enter. I wasn't... well, I wasn't entirely ready to face him, to tell the truth.

You see, Dr. Matthews was my thesis advisor. I was taking my PhD in advanced psychology, and my work aligned perfectly with his. My acceptance to the program had been nothing but the best news of my life, and the first year I worked with him had been a joy. But... well, things changed over this past week. You see, in all the time we'd been together, I guess he had... I dunno, he thought I was coming on to him or something. Last week, in one of our sessions, he had tried to kiss me. I rebuffed him, and I left his office in a panic.

We hadn't talked since, but we both knew we had to. The thing is- well, it's not like he's a bad guy. He's handsome, he's funny, he's smart, but- well, he's almost twice my age, and he's married! I don't do that sort of thing, I'm not that sort of girl. His voicemail was just a terse "Kate, we need to talk. Today. 3 PM." And so that's how I found myself here, in front of his office, steeling myself to go in. Finally, taking a deep breath, I knocked.

"Come in." he said, his low voice echoing beneath the door. I entered, and the moment he saw me I saw his jaw tighten. Clearly he was as embarrassed as I was.

"Ah, Kate." He said, taking off his glasses. "Please, sit down."

"Thank you." I said cordially, cool but polite. I sat down in the high-back leather chair, unconsciously smoothing my skirt as I did so.

"Look, Kate, I..." he said. He put his hands on his face, rubbing it. "I'll get to the point. I was wrong. You're not to blame here. I was completely, utterly in the wrong for what I did. I should not have assumed you felt the way I did, and I should never, ever have been as forward as I was or initiated any sort of romantic contact between us."

"I..." I said. He held up his hand.

"Please, let me finish." He said. "You don't have to say anything, if you don't want to. And if you'd like to change advisors, I'd understand. However, I want to put this past us, and I'd like to continue working together. Your work really is amazing, and I'm not just saying that. Do you think we can put this incident behind us and get back to work, in a professional setting, and do the amazing work we know we can do?"

"I..." I said. I smiled with relief, the first time this whole week. I was grateful how he had approached it, how sympathetic he was. "Thank you. And yes, I'm ready to get back to work if you are."

"Fantastic!" he said. "I was actually just working on something before you came in that I'd like your opinion on."

"Be happy to lend it. What were you working on?" I said. He swiveled his monitor around so I could see it.

"Well... that's the thing. I'm not sure, exactly." He said. "It's a new type of image-based mind therapy from a colleague of mine at the University of Rotterdam. It's supposed to elicit strong feelings and thoughts in the viewer if it's calibrated to the specific viewer, but I'm not feeling anything. Do you have any experience in this?"

"Dr. Von Helfing's experiments?" I said. I furrowed my brow. "A little. It was promising, but there was something about it being too specialized to have any useful therapeutic purpose. I do remember the basic way the images were supposed to work, however."

"Can you take a look at this one and see if maybe you can retool it a bit?" he said. "I'd love for it to work before I bring it to a departmental meeting."

"Sure, I'd be happy to." I said. The monitor was a little far away, so I stood up and leaned over the desk to get a closer look. I was grateful to see that Dr. Matthews didn't even look down my shirt- he was definitely taking this professionalism really seriously. I put my attention towards the image on the screen. It was your standard Von Helfing mind therapy image, but there was definitely something off about it.

"Hmm, there's definitely something weird about this." I said, furrowing my brow again. It had a very strange property I had never noticed before in a Von Helfing, some kind of shimmering, undulating glow to it. It made it very hard to see what the problem was.

"What is it?" Dr. Matthews said.

"I... hrm, I..." I said. I shook my head. It was like grasping at straws, looking at this image. It seemed to shimmer, blink, warp in and out. I could've sworn that it was somehow growing bigger, escaping the computer screen and taking over my vision. Still, it was very pleasant to look at. You could have put it in an art installation, the way it shimmered and moved, organically spiraling before my very eyes.

"Kate? Are you alright?" he said, looking over at me. I shook my head.

"I... uh... mmhmm..." I said. The image was rapidly all I could see, all I wanted to see. How could anything be so beautiful, so wonderful, so all-encompassing? I had never seen anything like it, not in any museum, not in any painting. Somebody should really tell Von Helfing that he had missed his true calling, that he was an artist and not a scientist.

"You seem a little distracted." He said. Out of the corner of my eye, I noticed that his eyes were now bolted on my breasts, staring straight down my cleavage. There was a small corner of my mind that knew I should be bothered by this, but the image was too important. It was so complex, so wonderful, I couldn't tear my eyes away from it.

"I... uh... yes..." I said, watching the shapes unfold and coalesce in front of me. It was a happy, peaceful feeling; I felt like I was sinking into a warm, relaxing bath, my thoughts submerged below the surface. It felt like I had been watching the screen forever, it felt like nothing else existed.

"Have you figured out the problem yet, Katie?" Dr. Matthews said. He got up, moving around to my side of the desk. He placed his hand on the small of my back, though I felt the pressure only dimly as I continued to look at the computer screen.

"Nuh... no..." I said, barely managing to get the words out as I shook my head.

"Oh Katie, darling, that's alright. I'll tell you." He said. "That's a real Von Helfing, alright. The problem, however, is that it wasn't calibrated for me, my love. It was calibrated for you."

"Muh...me...?" I said. I struggled to comprehend his words through the thick fog that had come down upon me.

"Yes, my dear." He said. His hand slid down slowly, deliberately, to cup my bottom. "You rebuffed my advances last week, as I imagined you might. But that wouldn't do- I just had to have you. So I spent the rest of the week programming this delightful little image for you."

I tried to reply, but it was so much effort; I couldn't. I realized, dimly through the fog of my brain, that he was hypnotizing me; he was using those beautiful, wonderful shapes to alter my brain, to change my very thoughts and feelings. A small part of me said it was wrong, that I should go, that this wasn't right, that he shouldn't be firmly cupping my bottom, but I didn't care; all I wanted to do was watch the shapes, watch them go around and around.

"You see, you're very beautiful, Katie." He said, rubbing me, almost nonchalantly. "That firm, tight ass, those long, shapely legs... I want them wrapped around me. And that's what this program is designed to do. Turn you into my obedient, hapless little slut. Don't you want that?"

I nodded before catching myself- did I want that? I was so confused. On the one hand I knew this was wrong, so wrong, but I wanted it so badly- the shapes, the shimmering shapes were telling me that it was ok, that it was right, and somehow I knew they were telling me a truth, an indelible truth that I could not deny. Time seemed to melt away as I stared at those shapes, and the minutes stretched into hours, stretched into eons as I stared at the squares. Somewhere, faintly, I heard a small ding come from the computer.

"Ah, the program has run its course." Dr. Matthews said. "Wonderful. How are you feeling, Katie?"

"I... don't... know..." I said. It was so hard to think. The words jumbled in my head, bouncing around, but there was something else now: the squares, those images, not leaving me, never leaving me, soothing voices that told me everything was ok, everything was right.

"You're feeling good, I suspect." Dr. Matthews said. "You're feeling very good, aren't you?"

"Yes... good..." I said thickly. And all of a sudden, I realized he was right. I felt really good; I loved those squares, loved the voices.

"You're a wonderful test subject, Katie." He said. "It worked even without the second set of images. I'd have thought I'd have to use them, you know."

"Now, let's begin." He said. "Be a good girl and take off your panties, won't you?"

I did so, obeying his command. It seemed... right, somehow , to do so, and I had no reason to complain. Slowly, thickly, as in a dream, I slid my panties to the floor, still bent over the desk, exposing my naked sex to him. His hands ran along my butt, sliding slower and slower to my sex.

"Let's see just how well Von Helfing's little program worked, hmm?" Dr. Matthews said. "Katie, begin to finger yourself."

It felt like my body obeyed even before my mind had a chance to process the command. I slid my hand beneath my skirt, and began to thrust my fingers in and out of my pussy mechanically.

"Hmm, no, that won't do at all." Dr. Matthews said. "It seems the programming has been overlaid too strongly. Katie, can you hear me? Can you understand me?"

"Yes." I said, dully, robotically, as I continued to finger myself. It seemed as though it was someone else fingering me; the fog had settled down on me so thick that I was almost removed from myself. I continued to thrust my fingers in and out of my pussy as I was told.

"Very good." Dr. Matthews said. "Katie, my sweet, listen to me carefully. When I snap my fingers, you're going to become incredibly aroused. You'll revert to your old personality, but you'll follow all my commands unquestioningly and find nothing strange about this situation. Do you understand?"

"I understand." I said thickly, my fingers still thrusting in and out.

"Wonderful." He said. And then he snapped his fingers and... the fog lifted. Oh GOD, but did it lift. I gasped as the snap reverberated through the air. It seemed to leave his fingers and go straight into me, an electric shock straight to my pussy. I had never felt this wave of arousal before. It was incredible, intense, above and beyond anything I had ever experienced before.

"Unnh!" I said, the force of the new feelings, the new sensations hitting me with a force I was unprepared for. Dr. Matthews laughed behind me.

"That worked better than I thought." He said. "How are you feeling now, my dear?"

"ogod..." I said. Before, I had been fingering myself only because he had told me to. Now, though... I couldn't even describe it. It was like my pussy had lit up, jolts of electricity firing through it. I wasn't just going in and out now- I was exploring, sliding, making myself feel good, rubbing my fingers on my slit, inside my pussy, and snaking out again to hit my clit.

"Sounds like you're enjoying yourself, Katie, dear." He said, chuckling.

"Mmm... yes..." I said, furiously fingering myself as I bent over my desk. With the return of my personality came that little voice in my head- that something was off about this whole situation. I didn't care, though- it was pushed down by my lust, by the raw, unadulterated arousal flowing through my body.

"That's good." He said. "That's very good, Katie. But you know what you're forgetting?"

"Uh... what?" I said. I wish he'd stop talking. He was distracting me from my clit, from my wonderful, beautiful clit that was thrumming and humming and sending me waves of crashing pleasure like I had not ever known before.

"You're forgetting how good it makes you feel when you please other people, too!" he said. "You know how much you love to suck my dick."

"Oh, right!" I said. I turned around from the table, and there his hard, pulsating cock was, right in front of me. How could I have been so stupid? I loved sucking his cock. It must have been the fingering, how aroused I was.

"Kneel and suck my cock, Kate." He said, wagging his cock at me playfully. I knelt in front of him, and I grabbed his cock in my hands.

"Isn't it the biggest cock you've ever seen, Katie?" he said.

It was. I started to run one hand along it, the other hand still deeply buried in my pussy, and I marveled at just how big it really was. I don't think I'd ever seen a cock that big before, actually. I started run my hands up and down his shaft, kissing the tip slowly, luxuriously, every now and then. I heard him groan, and I smiled. I loved it when he groaned, and his pleasure sent another wave of my own deep into my eager, anxious body.

I looked up at him with a wicked grin, and started to slide my mouth over his cock, slowly, teasingly, never breaking eye contact with him. He moaned again in ecstasy as my mouth started to slide down onto his cock. I wasn't sure if I'd be able to take his whole cock into my mouth, but I was able to do it, and he seemed to love it as his entire shaft slid deeply into my mouth. His eyes shut as he groaned, a deep sound coming from deep within him. His head started to move rhythmically, side by side, as his breath started coming faster and faster.

"Oh god, yes, Katie..." he said, whispering it gently as I cupped his balls, rubbing them gently as I took his cock in and out of my mouth. He groaned again as I rubbed his balls gently while his cock disappeared into my mouth over and over again; he thrust his head back and began to buck towards me instinctively, curling his fingers in my short blonde hair. And oh god, was it making me hot.

I loved his cock thrusting deep into my mouth. Every thrust of his mouth sent another jolt of shock down to my pussy, where my fingers were flitting in and out furiously in my wet, dripping pussy. I rubbed my clit furiously, spurred onward by his thrusting in and out of my mouth, and I realized I wasn't going to last much longer. The pleasure was intense, too intense, threatening to overwhelm me at any moment. I could feel him reaching the brink as well, his thrusts becoming more and more manic, his hips bucking wildly into my mouth, plunging his cock deeper and deeper down my throat.

"Katie, listen to me carefully." He said. "When I come, you're going to come at the same time. You're going to swallow all my come like the greedy cocksucking slut you are. Do you understand?"

I could not reply, but instead continued pumping his cock in and out of my mouth with renewed vigor. It was then that I felt it- I felt that tensing in his hips that signaled that he was about to come. And he did- with a grunt, he came in my mouth, his warm seed shooting into my mouth. I swallowed it hungrily, greedy, desperate for all of it- and then my own orgasm came.

It wracked me like a tidal wave. I had never, ever felt an orgasm like that before, an intensity that refused to let up. It was irresistible, and I could do nothing but let it happen and struggle to keep Dr. Matthews cock in my mouth, eagerly swallowing the rest of him as my orgasm continued to hit me in wave upon endless wave of sensation. My world almost melted away for a moment, and nothing existed except him, his cock, and my own uncontrollable pleasure.

I don't know how long my orgasm lasted, deep in the throes of pleasure as I was, but for a moment I forgot everything existed, all of it gone. As I came back to reality, however, I realized, dreamily, that I was still kneeling in front of Dr. Matthews. He had my hair in his hands, and he was stroking my head gently, like a pet.

"That's a good girl, Katie." He said sweetly, rubbing my head. I beamed up at him happily. "You're a wonderful test subject, and you're an amazing cock sucker."

"Thanks!" I said. "It's easy when you love doing it."

"It sure is." He said, and he laughed. But then my mind wandered for a moment, and I realized that I had never enjoyed sucking cock before. In fact, I had always refused to swallow, every time. I thought it was disgusting. I wonder why I had thought that?

"That's weird, though." I said, furrowing my brow.

"What's weird?" he said. "Oh, get up and lean over the desk, would you? I liked that view of your tits."

"Oh, sure." I said. I got up quickly, bending over the desk and pressing my breasts together. "It's just..."

"Just what, dear?" he said. He moved over to the computer, turning the computer screen back to him. I heard him fiddling with some keys, every now and then glancing down my shirt. I jiggled my tits for him when he did, smiling when he couldn't take his eyes off them.

"I don't remember liking that before, and something feels... off." I said. "I can't explain it, it's like... I dunno. Like a dream."

"How so?" he said.

"Well, I remember coming in and..." I said. I stopped. I remembered the shapes, the images. He had... he had done something! Something that made me want this. The realization hit me like a thunderbolt.

"It... you did something." I said. He nodded. He turned the computer screen back to me, and I saw the shapes again.

"No, don't- oh, no... nuh.... No...." I said, helpless, looking at the squares and shapes again. I had forgotten what I was saying, staring at the shapes.

"I thought that might happen." Dr. Matthews said, moving back behind me. I could feel his rapidly re-hardening cock pressed against my thigh, but I didn't care- those shapes, those wonderful shapes were back. "The decoupling of the original programming combined with the sudden orgasm shook the core reprogramming technique. No matter, this will be permanent."

"Uh... perma...nent..." I said, looking at the screen. Dr. Matthews positioned himself behind me, his cock pressed against the entrance to my sex.

"Yes, combining the sexual component with the programmatic component should fix things." He said. "Katie, darling, listen to me. You need my cock. You want my cock. You want it desperately inside you. You would do anything for it.

"I... yes." I said. And all of a sudden, a deep longing filled me- oh god, but I needed it! That big, hard cock at my thighs was wiping away all of my thoughts, all of my feelings. There screamed still a little voice in my head that said this wasn't right, but I swept it away; all I wanted was his cock, was that big, rock-hard cock filling me completely. I bucked at him, whimpering, trying to get it in me, but he held me firm. I never took my eyes off the shapes.

"Now now, Katie. You'll get fucked, don't worry." He said. "All you have to do is repeat after me, alright?"

"y...yes..." I said. I would do anything for that cock.

"I love Dr. Matthews." He said. "Unquestioningly. He is my master, and I will do anything for him."

"I..." I said, hesitating. I wanted that cock so bad, but something felt wrong about this. "I love..."

He pushed his cock a little deeper, so just the tip was entering my pussy. I gasped. Then he stopped. I needed that, needed more of that

"Oh god, please..." I whimpered.

"Say it, Katie." He said firmly.

"I... I love Dr. Matthews." I said. "Unquestioningly. He is my master, and I will do anything for him."

"Good girl." He said. He rewarded me with a little more of his cock, pushing in a little deeper. I gasped, my arms trembling, almost giving way.

"I am a slave." Dr. Matthews said. "I am my master's sex slave, and I will do anything for him. I have no thoughts of my own, no will of my own. I will obey him forever.

"I..." I said, hesitating again. A small part of me was screaming that this was wrong, not to do this, that this was a cliff I could never return from, never come back from. But that cock... oh god, I needed it so badly, needed it deep inside me, filling me. He again said nothing, simply pushing deeper into me, and I broke, whatever vestiges of resistance I had disappearing. I jumped over the cliff.

"I am a slave." I said. "I am my master's sex slave, and I will do anything for him. I have no thoughts of my own, no will of my own. I will obey him forever."

"Good slave." Dr. Matthews said, and at that moment everything changed. I felt myself wash away, replaced with a new core: I knew, without a doubt, I was his. His forever. My master owned me, owned me completely, and would forever more.

"Very good." He said. He began to thrust, and his hips bucked against mine rhythmically, slowly, almost detached. "Now your programming is complete. What are you?"

"I'm your slave, Master." I said happily. "Yours forever. I live to serve."

"Good slave." He said. "That programming worked very well, indeed. It pleases me to fuck you from behind."

"Oh, good, Master!" I squealed in delight. I loved pleasing my master so much. I didn't even remember why I felt any differently, before. This was much better. I didn't even feel that lust for cock like I did- I lusted after something different now. I lusted after his pleasure. I loved when Master's cock entered me because he loved when his cock entered me.

"Now that you're my sex slave, Katie, I was thinking of adding more girls to the harem." He said idly, thrusting into me. "That friend of yours, Andrea, I think should be our next. What do you think?"

"Oh yes, master."I said, happily bucking my ass against him. "She's very hot. She would make an excellent slave."

"I agree." He said. He slid out of me. "Has anyone ever fucked you in the ass, before?"

"No, Master." I said.

"I'm going to." He said. "Prepare your ass for me, will you?"

"Oh yes, Master. Of course!" I said happily, spreading my asshole for him. As his cock pressed on it and slid in, I realized how good it felt to please my master, how good it felt to have my master do whatever he wanted with me. As my master pressed his cock into my virgin asshole, I gasped with delight for him as he groaned, the tightness of my ass good on his cock. I was so happy that Master was going to enslave Andrea like he enslaved me. It was the best feeling in the world, and I was so glad I had a virgin asshole to please my master as he pumped in and out of me, excited for the days to come together...


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