The Master Gene Ch. 10

"Oh thank you Master. Having your cock grace my ass is the greatest joy of my life."

Hearing that Ben got a wicked grin. "If that's the case, then every time I thrust in you, you'd better tell little Amber there how me fucking your ass is better than anything she's ever done for you."

Then, after making sure Amber was carefully watching, he made his first thrust.

DERRICK'S POV

Derrick woke up to the sight of Judy riding him in a reverse cowgirl. As she grinded herself against his cock, he could see that she'd inserted him into her ass as opposed to her pussy this morning. The knowledge of why she'd done that made him grin.

Yesterday he'd come in to find Amy and Amanda waiting for him in matching maid outfits. They'd both gone out of their way to make themselves as interchangeable as possible. They'd gone to such effort in fact that Derrick just didn't have it in him to let them know that he could still tell them apart despite all this.

To reward them, he'd decided it was finally time to take Amy's anal virginity. She'd been working on her ass all month, desperate to get him to agree to take her final virginity. So it had been quite amusing to see her eyes light up when he suggested doing just that.

Of course, since he'd spent the night giving anal to both Amy and Amanda, now Judy wanted him to take her ass as well. It was somewhat amusing how the girls competed like that. It never got into an outright fight, that would cause problems for Derrick after all. But they would regularly compete with each over things like, who could make Derrick cum the most (usually Sarah, but when Amy and Amanda team up, they can milk him faster than anyone), or who had the best ass (that was Judy, though Derrick wasn't stupid enough to actually tell any of them that).

Derrick was usually fine with this, since most of the time it ended up in situations like this one. Lying back as he let her dictate the pace he turned to the side to see that Amy and Amanda were already gone, with only Sarah still there, lying next to him.

She was now at a point where she was clearly carrying. With the right outfit she could still hide her pregnancy of course, but seeing as she was currently naked the baby bump was unmistakable. Mind you even if she was wearing clothes she did nothing to hide her pregnancy if she could help it. When Derrick asked her about it she simply smiled and said, "Why on earth would I try to hide that I've been knocked up by the hottest stud on the planet?"

Derrick sometimes forgot just how complete her brainwashing was.

However since she was now clearly pregnant, Derrick had decided that this was the time to insist that at least one of his girls was going to have a hairy bush. Since Sarah wasn't going to be sporting a string bikini anymore, she was the logical pick. At the moment she only had stubble there, but it was still growing. She'd told him that as soon as it was long enough she was planning to dye it pink like her hair (She'd dyed it back to pink the instant she heard him mention that he liked her pink hair better).

Derrick looked at her and asked with an amused expression, "Where are the twins?"

"They're making breakfast," Sarah told him. "They had their fun last night. Now it's our turn."

Derrick grinned when he heard that. "Then I guess I'd better get started then," he said as he reached down and grabbed Judy's hips.

Instead of using his grip to start thrusting however, he instead moved his hands up her body as he slowly pulled them back towards him. Judy, intuiting what he wanted, fell back towards him. Derrick then used his arms to slow her descent so that she fell back slowly onto his chest, now lying down with him below her.

Once she was down she turned her head so that the two of them could begin making out. As their tongues began to intertwine, Derrick reached his arms around to grab her breasts. He quickly felt around until his fingers came upon her inverted nipples. In a smoot motion that spoke of lots of practice, Derrick reached his fingers in and pulled out her now erect nipples and began to gently twist them.

Her mouth being taken up by his, Judy could only let out a muffled moan as her body writhed on top of his. That changed however as she suddenly turned her head away from him as she gave a shocked squeal as she looked downwards. Derrick looked down himself and saw that while he was busy with Judy, Sarah had slipped down below and was busy licking at Judy's pussy as he continued to thrust into her ass.

"What are..uh...you doing?" Judy asked her in a low panting voice.

Sarah smiled back at her as she responded. "The sooner you cum, the sooner I get a turn."

Judy groaned in frustration as she desperately tried to keep from cumming as long as she could. Unfortunately for her, Sarah was an expert at eating a girl out and Derrick had learned every one of her weak spots, even the ones in her ass. Despite all her efforts it wasn't long before she began to spray her juices out as she came hard.

Sarah smiled in triumph. "My turn!" she exultantly declared.

"Sorry, but you were working on the wrong person," Derrick told her. "As it turns out, Judy's turn isn't over until I cum."

Judy was still coming down from her high when she heard that. She gave Sarah a sloppy grin as she once again began to grind her ass against his cock. Sarah simply pouted as she watched Derrick, making it very clear that she wanted to be the one Derrick was sodomizing at the moment.

Derrick, taking pity on her, started to quicken the pace. After all, if he was going to get anything done today at all, he'd need to finish satisfying his girls soon.

Judy lay on her stomach, still recuperating from the sheer fucking Derrick had given her. Derrick, for his part had just finished putting an anal plug into her (it helped keep the bed clean, plus the girls seemed to be somewhat protective of their share of Derrick's cum, which he didn't understand, but didn't feel like arguing with them about), when his phone rang.

Sarah, who was next in line for Derrick's cock, grunted in frustration. Derrick understood how she felt, but since he noticed the call was from his sister, decided he couldn't afford to let it go to voicemail. "Hey sis," he said as he answered the phone.

"What are you doing tonight?" she asked.

"Tonight's date night."

"How on earth do you manage a date night with four women?" came Karen's incredulous voice.

"Very carefully," he responded.

"Well however it's done, you're going to have to cancel it for tonight."

"Does that mean what I think it does?"

"Yeah," Karen replied, her voice barely containing its eagerness. "Tonight I've got everything ready. We're finally going to be able to run tests on you."

KAREN'S POV

Karen tried to relax as she waited for Derrick to arrive. She was so close. She'd been working towards this from the moment she'd realized the truth about the family's powers and now, it was finally going to happen. All she needed was Derrick, so where was he?

Fortunately for her sanity, Derrick arrived not too long after, with Sarah in tow.

She was a little annoyed to see Sarah with him. Obviously she expected one of his slaves to accompany him, if only to act as an unofficial bodyguard in case she was planning something. She wasn't, or at least she wasn't planning anything that was going to be actually harmful to Derrick, but she understood their need to protect him.

What annoyed her about Sarah was two-fold. The first was that unlike the others who could concentrate on something when they needed to, Sarah always seemed to be trying to turn whatever was going on into a new round of sex. The fact that at the moment she was covered up in a full trenchcoat, no doubt done to hide some cosplay outfit she was planning to seduce Derrick with, only confirmed this for her.

The second issue though was more abstract. Honestly she thought that Sarah was a bit too clever by half. The more she was around her, the more worried Karen became that Sarah would figure out what she was really doing all these tests to accomplish. The worst part was that Karen didn't know how Sarah would react if she figured out the truth. Would she attempt to stop her, or would she decide that what she was doing was in Derrick's best interests and help. Honestly, Karen didn't want to know. She'd rather just present this to Derrick as a fait accompli and deal with the fallout afterwards.

But there was nothing she could do about it at the moment, so she plastered on a fake smile and ushered them in.

"So what's the plan?" Derrick asked her.

"We don't have too much time, so I'm going to have to rush you through a number of tests. First, we'll get a basic brainscan to see if there's anything abnormal. Once that's done I'm going to try each of the chemicals on you while we scan to see if you react to any of them in specific. Afterwards if we have time I'll want to do a scan on Sarah to see if anything in her scan matches yours."

"Isn't that dangerous?"

"How so?"

"The chemicals. What if I activate again?"

Karen scoffed at that. "Even if you do, Sarah's already been enslaved and I'm immune so the risk is minimal."

Derrick looked at her in a way that made it clear that he wasn't as convinced as she was that this was safe.

"Derrick, trust me. I know what I'm doing. If I thought there was any chance that anything bad would happen to you, I wouldn't do this."

Derrick looked at her again, before sighing and moving on. Apparently he still had faith in her and what she told him. Mind you it helped that what she'd said was true. She may be misleading him on her exact reasons for studying him, but only because she thought what she was doing was what was best for him. If she thought this would hurt him, she'd burn her notebook and walk away in an instant.

Karen put these thoughts away as they reached their destination. "Okay, we can't have any metal in the scanning room so you're going to need to get changed. Sarah you can help him, but for God's sake don't turn this into sex! I'm seriously risking my career so we can do this, so we can't afford to waste any time."

"Okay, okay," Sarah reassured her flippantly.

Karen wanted to say something in return, but she held it in. She just didn't have time. Instead she headed into the control room and began to get everything ready.

About a minute later Derrick walked into the scanning room dressed in a customary patient's robe. Behind him was Sarah who had finally taken off her trenchcoat to reveal what she'd been wearing underneath.

It was a sexy nurse outfit, because of course it was.

Still, she did at least do as Karen told her as she guided her towards getting Derrick strapped onto the scanning table. Mind you as she did this she used every opportunity she had to show Derrick her ass, something that became obvious by the growing erection that even Karen could see through the glass, but Karen chose to ignore that for now.

Instead she started up the program and watched as the table slowly rolled into the scanner and Derrick's brain functions began to appear on the monitor in front of her.

As she started to eye scan in front of her, she noted just how normal it looked. Mind you she wasn't surprised by this. In fact she'd have been more surprised if she had seen something way out of the ordinary. That was why the whole scan was being saved, so that later when she had more time to truly comb through the scan she could look for any minute differences from the normal to see if she could pin down what part of his brain activated his gifts.

But for right now it was time to get to the second part.

"Okay, it's time to start the second test. Go ahead and grab the first chemical."

Sarah then went to a table that had been set up in the room and grabbed a small vial. In it was the first of the three chemicals that had been dumped on Derrick's head during his chemistry class. Though it still wasn't confirmed Karen believed it was likely that one of these chemicals was responsible for Derrick's early activation. If that was the case then there was also a chance that using it again could cause Derrick to re-activate. Personally Karen thought the chances of this were small, but she had to eliminate every possibility first.

She watched as Sarah approached Derrick. They'd decided in advance to use Derrick's arm for this test, as they really didn't want to add anymore white patches to his hair, not to mention the risk of doing damage to the scanner. Instead they'd set a towel under his left arm to catch any liquid that rolled off of him, while Sarah was prepped with a second to clean his arm afterwards, or to quickly wipe the chemical off of him if he did have a reaction.

Slowly, almost reluctantly Sarah began to pour the chemical on Derrick's arm. Karen watched intently, looking to see if there was any reaction at all. She had to reign in her disappointment however, when Derrick just sat there, showing no reaction at all. Karen took a quick look at his brainscan to see that it was showing no outward changes as well. She then took a deep breath before writing, 'No reaction,' in her notebook next to the name of the first chemical.

"Okay, clean him up and then we can try the second."

Sarah worked quickly and efficiently to wipe the liquid off Derrick before putting the vial back where it was and grabbing the second. She repeated the process, slowly pouring the liquid onto Derrick's arm, when suddenly Derrick screamed out.

Karen had a brief moment to watch as Derrick's brain scan went haywire. It was like every part of his brain was firing at full power all at once. Before she could really process this however she felt a searing pain in her head as she fell over, screaming as she writhed on the floor holding her head.

STUPID!!! She'd been so stupid. She knew about her great great uncle dying after failing to enslave his sister and she'd just ASSUMED that what had happened was that she'd just stabbed him when he'd been distracted by his power failing. It had never occurred to her that what had happened was that his death had been CAUSED by her own powers.

She knew that right now Derrick's power was on full blast, desperately trying to find someone to latch onto and she was the only target in range. But her own powers were working to protect her, which meant that the two abilities were quite literally duking it out. If his powers didn't somehow overwhelm hers and enslave her, then the only way this was going to end was when one of the two of them died.

Karen could only curse her arrogance and desperately try to keep herself from passing out due to the pain. However, just as suddenly as the pain had started, it stopped. Terrified at what that meant, Karen practically leaped to her feet and stared through the window into the scanning room.

To her shock, Derrick wasn't lying there dead. Instead he was awake and sitting up, being cradled by an inconsolable Sarah who'd clearly pulled his restraints off in her desperation to do something, anything, to help him.

But if Derrick wasn't dead and neither was she...then the only option left was that she'd been enslaved. If that was the case then pretty soon she'd be the newest member of Derrick's little harem. As she was coming to terms with this she suddenly heard a cough to her side. She turned her head to see Kiara Washington, CEO of the hospital and her boss looking at her with undisguised rage.

"So, do you want to explain what all of this is to me?" she asked in a voice that wasn't so much chilly, as it was approaching absolute zero.

Oh. So she was here. Then that meant....well fuck.