"You", she said, shocked to see the subject of her experiment standing before her. "That's right, me", John said, smiling as he watched N'Korra reach for something in her pocket. "Put your hands above your head", he said and, to N'Korra's horror, she felt herself obeying.

John walked over to her and slid his hand into her pocket, pulling out a small white oval with a single button on it. "What is this", he asked, looking into N'Korra's eyes. "It sends a distress signal to my ship", she said, her eyes filled with fear. She could feel John's mind overpowering hers, forcing her to submit to him. "Get rid of this", John said, handing the device to V'Sharra. She took the oval from him and left the room as John turned back to look at N'Korra.

"How are you controlling us", she asked and John simply laughed. "To be honest, I'm not sure. V'Sharra told me about your experiment, that it was meant to breed us out of existence. Yet, it seems that my mind is stronger than you anticipated." N'Korra looked at him with wide eyes, fear flooding her mind. "What are you going to do to me", she asked fearfully. During her extensive studies of humans, she had learned that they were a very violent race.

"Well, that's very simple", John said, laughing as he took a seat. "First, you're going to alter the formula that you injected me with. You're going to make it so that I retain the ability to control others, but don't have to worry about your DNA taking over my world. V'Sharra assured me that you could do this with no problem." N'Korra could already feel her thoughts deciding what needed to be altered in the formula in order to do as John commanded. As much as she wanted to use this chance to take control back from him, she could feel that she wouldn't be able to disobey him, no matter how much she desired to.

"Next, I'm going to fuck you", John said, looking the alien up and down. "With any luck I'll breed you, with a son, and you can watch as human DNA is spread throughout your species." The idea horrified N'Korra, but, to her disgust, she felt herself wanting that very thing; to have John breed her and to spread his seed in her homeworld seemed like a better idea than any she had had before. "If you don't give birth to a son, you will come back here and I'll breed you again", John said with a smirk.

"And, lastly", John said, looking at V'Sharra as she entered the room once more, "V'Sharra will be staying here as my slave. That will ensure that, just in case you find some way to shake off my control in the future, you won't try to harm me." V'Sharra's eyes glowed with happiness as she heard these words, despite knowing that he was controlling her. Nothing sounded more desirable than staying here and letting John use her for his pleasure for the rest of her life.

N'Korra's mind reeled as she heard John's words and felt them taking effect. She would never have guessed that a human, such a primitive race, would be able to upset her efforts. Yet the evidence was undeniable and, try though she might, she knew that she couldn't fight that evidence. "I should get started", she said and John nodded. "Yes, you should. But, you should drop the disguises, since I already know what you look like."

Both V'Sharra and N'Korra removed the silver bands from their wrists and their bodies resumed their natural forms. N'Korra opened the briefcase she had brought with her, in preparation for problems. Inside were all the chemicals she would need to make more of the serum that she had injected John with. With a few tweaks, it would replace the serum in John's veins, leaving him with his powers, but removing the alien DNA that would override the human DNA of any offspring.

A tear came to her eyes as she began to undo her own work, but she had no choice but to continue. As she looked up, she saw V'Sharra kneeling before John, a look of pure bliss in the younger female's eyes. "Thank you for allowing me to please you", V'Sharra said as she freed John's cock from it's restraints. Both V'Sharra and N'Korra felt heat rushing to their pussies at the sight of John's large dick.

N'Korra quickly turned back to her work, although part of her wished she were in her niece's place. V'Sharra, on the other hand, gripped John's hard shaft firmly as she leaned forward and touched her tongue to the head. As she had discovered with the male from the bar, human cum, and even precum, had a salty taste that was delicious. She eagerly ran her tongue over his dickhead as she slowly stroked his shaft. She couldn't restrain herself though and took his dick into her mouth, inch by inch.

John moaned as he watched his cock disappearing into the pink lips of the alien before him. She wasn't nearly as talented at giving head as his sister was, yet she showed potential. She was definitely eager, as evidenced by her quickly taking his entire length and girth into her throat. V'Sharra moaned as she felt her slender throat bulging on the large rod. She had never taken one so big in her mouth before, rarely having engaged in oral sex at all. The experience was new and exciting and she longed to please him.

As V'Sharra's head bobbed on his shaft, John looked up at N'Korra. She was fervently mixing liquids together, as if she were in a hurry to complete her task. A moment of doubt entered John's mind as he watched her working. If she resisted his control, the concoction she was preparing would leave him at her mercy. Yet, V'Sharra seemed completely under his control, even if she were aware that she was being controlled. He decided that there was nothing more he could do and elected to just enjoy V'Sharra's mouth until N'Korra was finished.

V'Sharra, for her part, was immensely enjoying the feeling of John's cock in her mouth. Feeling his shaft against her tongue, entering her throat and then exiting again, excited her more than anything she had ever experienced. She was surprised when he suddenly stood and grabbed a handful of her dark red hair in each of his hands. She couldn't have moved from his firm grip if she had wanted to, not that she had any desire to escape.

John held V'Sharra fast as he started ramming his cock in and out of her mouth. Now, rather than her pleasuring him, he was using her, fucking her throat as if it were a pussy. She felt her own cunt gushing with juices as his rough handling of her and dominating attitude enflamed her own lust. His balls slapped against her chin as he relentlessly pounded her throat, letting loose a primal sound as he used her.

He fucked her mouth for several minutes until he felt his orgasm nearing the breaking point. With a loud growl, he pulled his dick from her mouth mouth erupted, painting her pink face and breasts with hot, white ropes of cum. She gasped as his jizz splashed against her face, some landing in her hair. No one had ever before marked her in such a manner and that pushed her into previously unreached depths of pleasure. She moaned loudly as her body spasmed, her back arching as an orgasm tore through her. The scent of sweet juices wafted to her nose as sweet nectar squirted from her gash and puddled on the floor beneath her.

As the last drop of cum spurted from John's dick, N'Korra held up a syringe triumphantly. "It's ready", she said and John looked over at her. "That was quick", he said and N'Korra nodded. "I had everything I needed for the formula already. Also, I was highly motivated", she said, eyeing his rock hard shaft. "Good. Then get over here and give it to me", John said, holding out his arm.

N'Korra walked over to him and grabbed his arm, feeling for a blood vein. Quickly finding one, she inserted the syringe into his arm and quickly emptied emptied contents into his bloodstream. The effects immediately took effect, John yanking his arm away as pain coursed through his body. It felt like fire was burning inside him, quick and hot. The painful sensation lasted for almost a full minute before it subsided.

Panting for breath, John looked suspiciously at N'Korra. "On your knees", he growled and, to his surprise, she still obeyed. "So, she didn't overcome my command", John thought, before slapping N'Korra as hard as he could. Tears filled her eyes as she rubbed the spot where his palm had made contact. "That fucking hurt", John said and smiled sadistically down at her. "So now, before I fuck you, I'm going to make sure you hurt as well."

He reached down and retrieved his discarded belt, then looked at N'Korra. "Bend over the bed and, no matter how bad it hurts, don't you dare try to get up."

N'Korra's eyes filled with fear, even as she felt herself obeying the command. She wanted to defend herself, to explain that she couldn't have stopped the pain from the injection. Instead, she laid her torso on the bed and spread her legs a little, exposing her ass to John. He smiled as he swung the belt, a resounding crack filling the room as the leather made contact with N'Korra's pink ass.

She cried out in pain as he hit her with the belt again and again, tears flowing freely and soaking into the bed sheets. John swung the belt more than a dozen times before he stopped, finally satisfied that she had endured enough pain. Then he dropped the belt, aimed his cock at her wet pussy, and thrust inside. N'Korra cried out again as pain mingled with pleasure, each thrust of John's large cock causing his groin to slam against her sore ass. He couldn't have cared less as he savagely fucked her, ramming deep inside her cunt again and again. This was the being who had attempted to use him to eradicate the human race and he was going to make sure she never forgot him.

He fucked N'Korra for almost half an hour, during which he dumped two loads into her waiting cunt. When he finally pulled out, V'Sharra quickly grabbed his dick and began licking it clean. She turned toward her aunt's pussy, eager for more of John's cum, but he stopped her. "No, she needs to keep it all inside, so it has a greater chance of impregnating her." V'Sharra whined, but she restrained herself.

"Now", John said, turning to N'Korra, "Get dressed and get back to your ship. If all goes well, I'll never see you again." N'Korra quickly obeyed and put her clothes back on, retrieving the band that would allow her to take on human form once more. Without a look back at John or her niece, N'Korra walked out the door and got into the waiting car.

Once N'Korra had left, John turned to V'Sharra. "Come, slave", he said and V'Sharra got to her feet and followed him. He made sure she had the image modulator on before he took her to his house. Once inside, he went to his bed, had V'Sharra sleep on the floor, and crawled in between Meagan and Theresa.

***

Months later, both Theresa and Meagan, who were living with John now, had bellies that bulged with his children. V'Sharra wasn't far behind them in her pregnancy and she was happier than she had ever been in her life. She couldn't believe how this had turned out, but she was extremely glad that she had joined her aunt for this experiment.

As for John, he still regularly enjoyed his students bodies, particularly Ellie. More than one class was spent with his cock buried inside her young holes. He loved his powers and he planned to enjoy them for the rest of his life.

In a distant galaxy, N'Korra looked out the window of her own home as she rubbed her pregnant stomach. When she had returned to the council and declared that her experiment had failed utterly and that humans would continue to plague the galaxy, she had been shamed. Everyone scorned her for giving them hope and now taking it away.

Now she spent her days teaching basic science to any who would learn from her, all the while knowing that a human baby was growing in her womb. She had started this with the intent of solving the human problem and now, without her consent, humans would spread to her own world.

The End.

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