With his slutty sister as his business partner.

William took his sister to her bedroom with his hand kneading her ass the whole way, telling her how the taboo of **** made her incredibly hot and bothered and how her past boyfriends had never really satisfied her because deep down she had always known she could only be satisfied by her brother's dick.

By the time they reached her bedroom she was in a frenzy of lust, kissing him hungrily between frantic, clumsy attempts to pull off their clothing.

"Oh god! I need you inside me!" she moaned as he groped her tits and squeezed her nipples. "I need my little brother's big dick!"

He climbed up on her bed and lay on his back and waggled his engorged cock at her.

"Mount up, Morgan," he instructed. "I want to see your tits bounce while you rid my dick!"

"Oh fuck yes!" she exclaimed, rembering how much it turned her on to have her brother admire her naked body.

She rubbed her tits along his body from calves to chest as she crawled her way up, grinning lustily at him as she did so, pausing to rub his cock between her soft, firm boobies before continuing up and kissing him on thw mouth, her tongue exploring his mouth as his hands explored her ass.

Then she rose up on her knees, reached between her legs andd guided William's cock bether labia and into her twat. She whimpered, aware that she'd needed this for a very, very long time. Or at least she'd believed that was true for several agonizing minutes.

"Oh yeah," William exhaled. "That's what my slutty sister likes. You're so happy riding my dick, Morgan. It feels so good!"

"So happy," Morgan agreed, arching her back and grinding. "So good!"

She was slick and hot and perfect and William was astounded by how incredible her tits looked from this position. He grabbed hold of her hips and squirmed beneath her, his one-eyed diver exploring the recesses of the forbidden cave.

"I'm the best lay you've ever had, Morgan," he assured her. "The best lay you can imagine."

"The best!" she agreed, trembling. "The BEST!"

"You're already close to coming, Morgan," hecsaid, realizing he couldn't last long watching her ride his pole like this.

"So close!" she agreed, grabbing hold of her tits and squeezing her nipples, her eyes losing focus. "So close!"

"You're... you're going to come when I tell you to come," he said. "And...and it will be the best...best orgasm of your life."

"Best!" she agreed.

"Come, you little slut!" he commanded. "Come hard! Come loud!"

"Uuuungh!" she exclaimed, her face screwing up, "Ooh! EEEEEEEEEEEEE!"

She shuddered violently in orgasm, squealing her lungs out. William was so close to filling her wigh spunk, but he didn't know if she was on birth control and didn't wato empregnate his sister.

Plus there was better use for his precious, potent spunk if he was going to proceed with his plans. So he held off and when his sweaty sister collapsed on top of him, panting and glowing, he whispered into her ear.

"You're so grateful, Morgan," he said. "You want to suck me off. You need to suck me off and swallow every drop."

"Need to...suck you..." she agreed.

She squirmed back in the direction of his feet, his cock sliding out of her, and as soon as she was in a position to do so, she took the base of his shaft in her right fist and took the rest of him into her mouth.

"Mmmm!" she exclaimed, looking up at him with bleary, grateful eyes, tasting her own cunt on his rod, desperately needing to show her gratitude and swallow his magical sperm.

It didn't take long. The sight of her ****, grateful eyes begging him to bust a nut in her mouth would have been enough even without her hungry, pleading lips and tongue and the knowledge that another, larger dose would leave her utterly helpless. He blew his wad. Morgan gulped it down greedily.

Once she was sure no more jizm was forth coming, she released his cock and pushed herself up with her hands on either side of his legs.

"Oh, wow, that was..." she began, then froze.

She shivered. Her eyes rolled back in her head.

" Oh wow...Oh wow!" she said, then fell over on her side and trembled violently.

"Oh god..." she said. "Oh god!"

"How do you feel, Morgan?" William asked, crawling around to brush her hair face.

"I...I don't know," she admitted, then looked desperately at him. "How do U feel?"

"You feel happy, Morgan" he assured her. "You feel happy and grateful and fullfilled. But most of all, you feel like you want to do whatever I tell tou to do, to think whatever I tell you to think, to be whatever I tell you to be."

She smiled in utter relief.

"Oh yes," she agreed. "That's how I feel. That's how I always want to feel."

"You will, Morgan" he promised, stroking her right tit. "You're mine forever."

"Forever!" she agreed with ineffable joy. "I'm yours forever!"

"I'm going to tell you a secret now, Morgan," he said. "You won't tell anyone, right?"

"I won't tell anyone!" she vowed.

"The reason you want to do and everything I tell you is because you swallowed my semen," he said. "It makes women unable to resist my suggestions. I found out that our grandfather had the same power and that's how he got so rich. You think that's great, don't you!"

"I do!" she declared.

"You feel flattered that you were the first woman I tried it on," he told her.

"You must really like me!" she exclaimed, the giggled.

"Well, I do now!" William conceded. "And you're going to help me use this power to take over the wills of other women, Morgan. You want themnto find me as irresistible as you do!"

"Of course I do!" she agreed.

"So, I've been thinking," he said. "Mom's father started out with prostitution and **** once he found out what his semen could do. That's an option. I'm sure you'd be willing to whore for me."

"Of course!" Morgan said cheerfully.

"But I think that there are more legal options," William said. "I think with your help, I can soon be making more than Grandpa ever imagined! And we might even get you that modeling job you've always wanted!"

"You're so good to me!" she gushed.

"So we're going to start small," he said, laying out his business plan.