Marcia takes Ellen inside

Arthur watch them go and, remembering what Ellen had been doing in her room, couldn't resist a quick peek. He couldn't find them downstairs so quietly headed upstairs. Ellen's door wasn't closed and he could hear voices inside. Creeping over and look through the gap he saw Ellen on her knees with Marcia's brown eight inch cock resting on her face.

"Is this what you want slut?" Ellen didn't say anything and Marcia slapped her with her cock. "Answer me."

"Yes Mistress." Ellen answered as the cock went back to rest on her face. Arthur can honestly never say he expected his bratty rebel sister to say 'Mistress'.

"Have you been a good girl?"

"Yes Mistress."

There was another cock slap. "Don't lie slut, I'm friends with your mother, I know how much of a disappointment you've been since our last session."

"S-sorry Mistress." Ellen moaned.

"Don't be sorry, don't be a cunt. It's not that hard. But I guess we'll have to punish you. Open." She pulled back and rested her cock head on Ellen's lips. Ellen opened her mouth obediently. "Now what are you?"

"I'm a **** for your brown cock Mistress." Ellen recited. "I'm your futa fuck toy, your cock sleeve, your ****."

"That's right white girl. Now worship my cock." Ellen dives down on Marcia's cock, taking it to the base in one smooth motion before coming back to her tip. "Fuck I'm glad I caught you perving on me. Suck harder." She grabbed a fist full of Ellen's hair and fucked her face. Her cock sliding into the smaller futa's mouth and bulging out her throat. "That's right slut. You look just like your mother did sucking my cock."

Ellen's cock was rock hard and free of her pants but she wasn't touching it, her hands held behind her back, even while she is thrown back and forth by Marcia's rough face fuck she never uses them to try and balance.

"Gonna paint your throat white as your skin bitch." Marcia grunts, holding Ellen's head still on her cock, fully impaled. Arthur can actually see Marcia's cock pulsing in Ellen's throat as she pumps her cum down it. "Better, but I felt your teeth." She said pull out of his sister's mouth.

Ellen coughed a few times. "Sorry Mistress." She said then looked directly at Arthur. Arthur froze hoping she hadn't actually seen her.

"Are you coming in or not?" Marcia said turning to face him, her cock pointing accusatory of his peeping. Arthur considered running but that was pointless so he walked inside. "Shut the door." He closed the door as fear filled him, what was going to happen to him?

"Did you like what you saw?" Ellen asked smiling at him. "Bet you wish it was you - AH!" She was shut up but a cock slap.

"No I don't think that is what he'll be doing." Marcia said glaring at Ellen. "Stand here." She told Arthur, pointing at the bed behind Ellen. He walked there and waited. "Good boy." She walked around Ellen to stand next to him looking at his sister's back. "Did you like what you saw?" She asked as a hand trailed down from his shoulder to his pants and the tent that was there. "And don't lie."

"Y-yes." He answered as her hand worked on the button and zipper of his pants. Ellen was still facing away and he looked down to see her hands still behind her back.

"What did you like?" Marcia asked as she pulled his pants down and wrapped her hand around his cock.

"I uh," it was hard to get words out while the gorgeous Puerto Rican futa he'd jerked off to so many times was now, jerking him off after having blown a load down his sisters throat.

"Was it seeing your sister suck my cock?" She teased his tip for a moment, "Was it seeing my brown cock fucking a mouth?" she spread his pre around his cock, "Or was it seeing your sister put in her place?"

As she said that he looked at Ellen, so obediently sitting there, not being a brat or a bitch. "That." He mumbled.

"Good." She purred into his ear. "You know I wasn't sure what to do with you standing in that door way. I thought for sure you'd be on your knees next to your sister at just the hint that that is what I want." A shudder went through him, not of pleasure at the handjob, but at discomfort with her suggestion. "Good, but now, well now I see potential." She stroked him faster and he moaned. "You've got a good cock." She mused. "Bigger than my most I've seen." He felt a thrill of pride in his chest at her words. Ellen scoffed but before that could do anything to his confidence Marcia corrected her. "A big cock on a futa isn't special and we both know yours is far from big. A cock this nice on a man is rare. If he was a futa you'd probably be begging to suck it every day. In fact. Slut spin."

Ellen spun on her on knees turning to see his cock staring at her. "Mistress?" She asked unable to take her eyes off his cock.

"Suck your brother's cock."

"What?" Both of Artur and Ellen asked together.

"Slut's don't question they obey." Marcia ordered Ellen glaring at her. Ellen quickly looked down at his cock. After a second she shuffled fowards and opened her mouth. It was the first time he'd ever felt this, and it felt amazing. "You see Arthur, I never thought you be the one doing this. I thought for sure in a house of so many futas you'd be broken in, Even at the party I didn't think you were capable of this."

"Fuck." He moaned out as his sisters tongue flicked around his tip.

"But here you are, I set this up, sure you'd be sucking my cock when you saw your sister doing it but you surprised me." She grabbed the back of Ellen's head and pushed her all the way on his cock. The sound of her gagging made him moan happily, finally she was shutting up. "You impressed me with that cock and with what you wanted."

Arthur felt her grab his hand and put it on the back of Ellen's head as she let go. Ellen tried to slow down her impaling on his cock but he growled and **** her keep going.

"Perfect." Marcia said as she stepped away and started stroking. "I could teach you Arthur. Show you how to make any futa you want exactly like Ellen, your mother, your sisters, your friends. You wouldn't have to be worried about them anymore. No more concern about being **** by a family member they would obey you."

He looked at Marcia with a raise eyebrow. "What?"

"Futa are simple. We want to fuck, and fuck when we want but that makes us easy to control. Look at your sister. When I started with her she was demanding sex, constantly touching her cock, but now, put a foot on it." Marcia said. In his current mind he couldn't think of a reason not to and did so, pressing his bare foot against her rock hard cock, pressing down until her cock was pressed into the floor. "See, she isn't even trying to grind against you."

Arthur let out grunts as her orgasm was coming. "Cumming." He moaned out.

"Cum in her throat Arthur, fill your sister throat and I'll teach you how to be a dom." Marcia stepped up to Ellen and let out a moan as she unloaded her second load, this one almost entirely into her hair.

The sight was too much and he slammed her head down on his cock, pumping his load into her stomach. "Good slut." He cooed as he claimed his sister throat jut like Marcia did.

"Excellent. Slut." Marcia grabbed Ellen's head from his hand and made her look into his eyes. "He is your master, your trainer, disobey him and he will punish you." She pushed Ellen to the ground. "Do you want her to cum?" Ellen stayed on the ground, her cock still under his foot her hands still behind her back.

He smirked at her. "Hey cockbreath, think you're allow to cum?"

"S-sorry for being a brat Master." She mumbled out. "Please please let me cum."

Arthur decide to be merciful and stroked her with his foot. She barely lasted a few stroke before painted the carpet with yet another one of her loads.

After that Marcia was true to her word. Using Ellen as many an example she taught him how to get into a futa's head, how to twist their desires in on themselves. Admittedly sometime reciprocation would be needed, at least at first.

His first test was Cora, naturally. She was easy and soon enough was happily taking his cock without ever needing reciprocation.

After that was his mother. That took time. Lots of tease, showing off and driving her nuts. When she hit her breaking point he was in the shower jerking off. Without a word she walk in and stroked him to completion onto her own cock and left. After that it was easy, she was so starved of sexual contact that all it took was regular hand jobs to keep her obedient.

Lenna was a challenge because she wasn't home often but a challenge was the ticket. After all of her flirting and trying to get into their mothers pants seeing her sucking his cock after he'd challenged her getting oral from her broke her.

Alice was the real challenge but Marcia thought him that taking away privileges freely given works well on futa. So he did just that, he gave her Ellen for a while then took her away. After doing this enough Alice broke, begging him for access to her sister. He refused unless she took his cock. She didn't even think about what that meant and bent over for him to fuck her pussy.

Life was much now. His family was happy, much less sexually aggressive towards each other and generally closer. Sure that was mostly because they were all in one way or another his subs but who cares.