The Island of Three Ch. 09

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It's Sylvia's turn to moan!
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Part 9 of the 10 part series

Updated 06/13/2023
Created 03/09/2020
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We're back! Now I know how long you've all been waiting for this, so I hope it satisfies you all. I've already started on chapter ten, so you won't have to wait quite as long next time.

Big thanks to my editor AirSearch1 for the continued input. With that said, dig in!

The Island of Three

Chapter 9

Sylvia sexily bit her lip and dropped down to her knees. "Oh Tobi, I know exactly what I want..."

Tobias was taken aback by that same coy expression she wore while acting playful. It was like she had a second personality, the normal, fun, and kind-hearted person she was, and a sexual side to herself that was only released when things got too hot to be able to control it.

Sylvia started to untie the drawstring around her brother's waist, allowing his shorts to fall to his feet.

Tobias' cock had already started to grow and thicken to the sight of his sister's body. The white, wet shirt sticking to her tits, the short shorts that barely covered anything and the look in Sylvia's eye that screamed how horny she was.

Sylvia wasted no time at all as she pulled down her brother's boxers. A brief tug and out came his near full hard-on, which she immediately wrapped her small hands around and began to lightly jerk her wrist.

"Do you like it when I touch your cock bro?"

Tobias could only nod in response.

"Do you like it when I..." Sylvia brought his cock to her lips and wrapped them around his head. "...mmm, put your cock in my mouth?"

Again, Tobias nodded in response and felt his entire body heat up.

"Mmm, you've got such a big..." Sylvia pulled his cock into her mouth and circled the head with her tongue. "... hard cock. Are you hard for me Tobi? Hard for your dirty little sister?"

For several minutes Sylvia continued to pull her brother's now full erection into her mouth, lick it several times and then pull it clear to pump it in her hand.

"Oh, fuck me! Syl, that feels insane." If her actions weren't enough to get him going, her dirty talk was.

Tobias had felt the thrill of breaking the incest rule with his sister Lexi, but with Sylvia it was like an entirely new world of possibilities had opened up. How many people get to fuck their attractive younger sister? And how many get to experience it with other family members?

Sylvia sexily smiled and once again took his meat between her tantalising lips. She began to moan softly, vibrating the edges of his dick head. She then pulled it free to pump it some more, all the while gazing up at Tobias with her big round eyes.

"I can't tell you how long I've wanted to do this to you Tobi. Look at me! Look at your naughty sister as she sucks your cock!"

Sylvia pulled his knob back into her mouth and took it much further than before. She quickly began to frantically suck on it like a popsicle. Sucking it in and swirling her tongue around the shaft.

"Oh my GOD!!!"

Tobias reeled his head back as his sister went to town on his junk. She pounded it in and out of her mouth, vacuuming it in with terrifying accuracy and control. He knew that if she continued as she did, he wouldn't last long even on his best day.

Suddenly Sylvia stopped all actions and pulled his cock free of her mouth. It took Tobias a few seconds to recuperate and realise what was happening.

When he looked down to find out, Sylvia was in the process of pulling her wet top up and over her head, allowing her succulent tits to bounce freely.

Tobias could all but dribble at the sight. She had often tanned her body wearing a bra or top, so her tits were far paler than the rest of her bronze skin. Both her and Lexi were blessed with a body that could shake the heavens, especially when it came to their breasts.

"What's wrong Tobi? Like what you see?"

Tobias swallowed as he took in every inch of her chest with his hungry gaze. "F-fuck yes..."

Sylvia laughed and threw the garment to her side. Then she looked up and smirked that same mischievous smile once more before diving her mouth back where it belonged.

"Oh goddd. I am... never going to get used to that!"

Sylvia moaned hearing the effect she had on her brother. Knowing he was being pleasured by her. Knowing she shouldn't have her mouth wrapped around his erection, but did. It was a euphoric feeling she never knew existed. In her experience she had barely even started, and already she could feel a wet patch growing between her pussy lips.

Tobias grabbed hold of her ponytail at the base and started thrusting his hips into her face. It wasn't overly forceful as he wasn't sure of her limit. And he still couldn't be sure whether she could deepthroat his entire length, but he held her with a firm grip and pulled her mouth as far onto his meat as she could manage comfortably.

"Ooohhh, you fucking dirty bitch! Taking your brother's cock like that. Mmmmm, fuck. Does it turn you on? To be on your knees like that?"

Tobias pulled his hungry sister free to speak.

"Ughh! Y-yes Tobi. Use me. Use my mouth as..."

Before Sylvia could finish, Tobias pulled her back onto his cock and started pounding it back in again. He could see in her eyes just how far she was willing to go this time. She had completely given in to the forbidden dark side of their pleasure.

"Fuck Syl, you're so fucking good at this!"

Again, Sylvia moaned and relished as she sucked her brother dry. She could see at this point that he would have collapsed backwards if the cabin wasn't supporting his back.

Without wanting to waste a single second, she began to unbutton her shorts so she could slide her fingers down to her dripping wet entrance.

Sylvia's fingers began circling her wet lips in an effort to lubricate them enough to slide in with ease. But before she had the chance, Tobias began to show the signs of a familiar form of ecstasy that only men expressed.

Assuming he was close to the edge, she forced her head backwards, allowing his cock to bounce freely from her mouth. A few droplets of saliva dripped off the end of his cock, landing perfectly between the heaven that was Sylvia's cleavage.

"Oh, fuck me. Why did you stop?"

"You don't get to cum that quickly mister..."

For the briefest of seconds, Tobias felt an inkling of shame at how quick his orgasm approached. It wasn't exactly pornstar worthy, and he knew that Sylvia deserved at least an entire day of pure orgasmic bliss before release.

Sylvia raised herself up on her knees to place her brother's cock directly between her juicy melons.

"Oh my g..."

"I thought you'd like that. Does it feel good?"

Sylvia's breasts swallowed Tobi's dick completely. She started to pump her heaving chest up and down, using her own saliva as lubricant.

"Jesus fuck! Good? Y-you have no i-fucking-dea!"

Sylvia smirked and picked up the pace. She watched as the tip of his prick disappeared between her heaving bosom. She knew he was ready to blow a forceful white barrage of bliss all over her pretty face.

"So Tobi, still need to cum?"

"Fuck yes!"

"Good." Sylvia smiled a wicked grin. "But first..." She then let go of her breasts, stood up from her knees and nigh on tackled her brother to the floor.

It took him by surprise, but he managed to control his fall to a minor 'thud' while his body found the floor. He looked up at the clear blue sky for half a second before his attention quickly diverted back to Sylvia as she began shed her shorts.

Now completely nude, Sylvia nestled her legs either side of her brother's thighs, pressed his hard cock against her soaking wet pussy and gently rocked herself back and forth along his shaft.

"I have to admit, I quite like the view sis." Tobias smirked as he eyed his sister's toned body.

Sylvia rolled her eyes and then put her hands on his chest. "Mmm, I bet."

Tobias quickly stole a glance behind Sylvia to see if his other sister Lexi was staring at them. She was, like a dog in heat gawking at the two. He wondered if she was at all angry with them for doing what they were out in the open. But on the other hand he had Sylvia completely naked and straddling his cock. His mind didn't wander for long.

Sylvia leaned down and crushed her tits against his chest and brought her lips to his. The two shared an intimate kiss as they moaned and groaned into the other.

Sylvia reached down between their sandwiched bodies and began to aim his hard cock at her entrance. She was seconds away from slamming her hips backwards before Tobias suddenly stopped her.

Before she could say anything, Tobias flipped her to the side and climbed on top of the babe. He then aimed his cock at her tight little cunt and prepared to drive home.

"Syl, I can only ask you this once..." He looked into his excited sister's eyes. "...are you sure about this? I was expecting this moment to be a little bit more... graceful."

Sylvia smiled at her brother. Even now, on the very edge of breaking the ultimate taboo, he was there worrying about her. It was nearly enough to make her cry.

"Tobi, look at me. You can make love to me next time, but right now, I need you to fuck me!"

Finally given the green light, Tobias forced his hips forward, spearing into his sister's tight wet pussy.

"Ooooohhh, Tobiii." Sylvia wrapped her arms around her brother's neck as he began to move his hips back and forth slowly.

"Fuckkk. Syl you're so fucking tight!"

"Mmmm god I love it when you say that. Tell me... ahhh, fuck... again!"

Tobias continued diving in deeper and for longer. Her snatch was tight, tighter than tight. Like a vice, untouched for months if not years. He knew to take it somewhat slowly at first for fear of breaking her, but the temptation to go utterly crazy was still there.

"Oh wow! You're cunt is so fucking tight sis! I love it!"

"Oooohhhh fuckkk. Fuck me Tobi. Fuck your slut sister's tight little pussy."

Tobias wasn't quite expecting the response he was getting. Never before had he heard such dirty talk, especially from a loved one, but it only spurred him on more.

"Oooh goddd Tobiii. It's... ohhh... so biggg. Oh my godddd, yes! Yes! Yess!!!"

Tobias started to pick up the pace and ram his hard cock deep inside her. The need to fuck his unspoiled sister drove him onward, causing him to be rougher than he probably should be.

"God I can't believe how fucking tight you are Syl. I'm... fuck... there's no way I'll last... much longer."

"Ohhh god yes! Fuck me Tobi. Drive that... ohhh, fat fucking dick inside me. Fuck me! Yesss, fuck me Tobi!"

Tobias was seconds away from unleashing his load deep inside her pussy when he came to and realised what he was about to do.

"Syl... fuck, I'm going to cum. W-where should..."

"Cum inside me! Ohhh god that's... so fucking naughty..." Sylvia wrapped her legs around her brother's waist to lock him in place. "...cum inside your sister Tobi!"

Tobias had a split second decision to make. Either force her legs to unlock and cum somewhere else, or give in to the overwhelming urge to cum inside his little sister.

"Syl, I'm really... really going to..."

"FUCK! YES TOBI! CUM INSIDE M... OH GOD I'M COMING TOO!!! OHHHH!"

Hearing her screaming out in pleasure tipped his decision to one side and forced him to drive his cock deep into her sex. He felt his balls churn and gush with spunk as it shot out in waves.

One after the other, he dumped a jolt of semen as deep into his sister as he could. "OHHHMMMMFUCKKK!!!"

Sylvia moaned a long and strained breath of air as he released inside her. She felt the heat and impact hit her deepest depths. Her body convulsed and jolted through the entire ordeal.

"Hhhhhggghhh fuck! Oooh fuckkk! Sylvia, oh my fucking god Syvlia. A-are you, okay?" He asked as his orgasm came to a standstill.

Sylvia's own orgasm took a short while longer to fade, but when it did, her legs released her brother's waist, allowing his cock to slip free. Shortly followed by a generous amount of his cum.

Tobias watched as it flowed out of her like a stream. It was an immediate turn on, and became a memory he wouldn't soon forget.

"Oh my god, Tobi. Look... mmm... fuck, look at me. Your cum is..." Sylvia reached a hand down between her legs and scooped up a small droplet of her brother's cum. She then brought it to her lips and sucked it inside her mouth.

Tobias and Lexi both watched on in awe. "Fuck!"

"Holy shit Syl. That was, insane."

Sylvia slowly rose up and rested her hands behind her back. Her breathing was erratic causing her breasts to heave.

"I... I can't believe I just did that. I..." Sylvia suddenly began to act like her normal self again.

"Are you okay Syl?"

"Uhhh, yeah. I-i'm sorry Tobi. I don't know what came over me."

Tobias laughed. "No need to apologise. Let that version of you take over more often."

Sylvia hesitantly laughed while also conscious of what she had just said and done.

"Fuck me, I just tasted your cum as it..."

"Hey! Syl, no need to get all worried. I thought that was unbelievably hot. It's okay."

She looked up at him with a shy yet curious expression. "I-it was? I'm sorry, I get a little crazy sometimes. And, it's been a while."

"I don't mind a little crazy. Hell, you should see how Lexi gets when..."

From out of nowhere Lexi shouts up the beach. "Hey! I can hear you! The wind is heading my way fuckface!"

Tobias and Sylvia both laugh as they get to their feet.

"Come on, let's go down to the sea and clean ourselves off a bit."

Sylvia slowly covers up her nipples with her arm in a modest attempt. Her arms just big enough to cover her nipples, but did nothing to hide the sheer bust.

"You know you don't have to cover up anymore right?"

"I... I know. I guess you're right." Sylvia chuckles and lowers her arm allowing her brother another good look at the fun bags.

They both walked hand in hand down to the beach. Sylvia was a little unbalanced due to shaky knees, but her brother helped to stabilise her. Lexi couldn't help but wolf whistle to the couple as they walked by her, which the siblings happily ignored. Eventually getting to the sea, they waded into the water and had a quick dunk to rinse themselves head to toe.

Sylvia ran her hands over her wet body with the salty water to get as much of the sweat off as she could. Wiping over every inch of golden skin that she could reach. Unbeknownst to her, she was attracting quite the audience.

Tobias stood a few feet away with his mouth agape, while Lexi was mirroring her brother's expression from up the beach.

"Umm, Tobi? You okay?"

"Ughhh, yeah! Yeah of course. Sorry, it's hard not to look." Tobias nervously admitted.

"Yeah? Is it hard Tobi, is it really hard?" Sylvia couldn't help but grab her ample bosom to tease her poor brother.

Tobias swallowed the build up of saliva in his mouth, enjoyed the show and then tried to concentrate back on cleaning himself up. He wondered how her demeanour could change so drastically, and so quickly.

Sylvia laughed and went back to washing herself also. A smile across her face so wide and joyful it made her happy thinking about just how happy she was.

"You know Syl, you seem... different. At least from how you have been since we got here."

"I think I am. I don't know how to explain it Tobi, but I feel like a weight has been lifted from my shoulders. I know that sounds cliché, but that's how I feel."

"I get it. Really." Tobias smiled at his sister who smiled back. "So, we're okay? After that, earlier... what we did?"

Sylvia laughed and walked over to her brother. "Yes Tobi. Better than okay." She then placed her lips against his and passionately kissed him before lunging out of reach and running towards the shore. "Come on slow poke. Try and catch me..."

Tobias watched as his sister bounced through the water with a grin plastered across her face. He smiled and then gave chase to the vixen.

Sylvia made it up the beach to Lexi before Tobias caught up. Taking a breather, she sat next to her sister and soaked up the sunlight to dry. Tobias stayed standing for a moment before he followed suit and sat down also.

"So.... how was it?" Asked Lexi.

"What?" Tobias and Sylvia asked in unison.

"Finally giving your brother that sweet sweet..."

"Stop right there Lex! Why do you have to be so crude all of the time?" Sylvia stared daggers at her sister.

"Me? Crude? Yeah, I wasn't the one screaming for her brother to cum inside her..."

Both Tobias and Sylvia stared at their younger sister with a look of pure shock.

"T-that, that wasn't... t-that isn't what happened. You heard that?"

"Heard it? Syl, the whole island shook. It wouldn't surprise me if civilisation heard that and they now come to rescue us." Lexi's grin grew by the second. "Besides, what happened to being safe while fucking huh?"

"She has a good point actually." Stated Tobias.

"I... that... I don't know! It just kind of happened. Shut up both of you!"

There was a split second silence before the three burst out into laughter.

They each soaked up the sun for a while before setting their sights back on the cabin. Tobias and Sylvia were both dry and ready to find a few jobs to do. Lexi had already made her mind up about sunbathing for a while longer after taking a thirty minute break.

Sylvia looked to her brother as they made their way up the beach. He had an interesting expression that made her wonder if he was thinking about their earlier encounter.

"So Tobz, whatcha thinking about?" Sylvia asked playfully.

Tobias didn't answer for a few minutes as he was still lost in thought. "I was thinking about how to make a shower."

Sylvia pouted at the information which Lexi picked up on and laughed.

"A shower's a great idea! How you gonna do it bro?" Asked Lexi.

"That's the thing. I'm not sure yet. I've got one idea, but it'll rely on luck. So here's hoping I'm lucky, I guess."

"You're trapped on an island with two babes. I'd say your pretty lucky." Stated Lexi.

"Awful big ego for such a small woman, Lex." Joked Tobias.

"Hey! You know it's true mister!"

Tobias and Sylvia both rolled their eyes and laughed, which in turn caused Lexi to pout.

Back at the cabin, the girls went indoors, while Tobias made his way into the woods with the handsaw. He wasn't sure what his sisters were doing, but his best guess was to gossip about sex. It was the only explanation, however narrow minded he was at the time.

Tobias had an idea for the shower, which mainly consisted of either a hollowed out log, or a branch he could channel himself to make a separate flow of water. His hope was to divert their spring into two, one for general use like washing up and one for the shower.

Eventually he assumed he'd make all kinds of things, including a pond and maybe even a water feature, but that wasn't a priority.

Tobias searched for a while before luck favoured him with the perfect tree trunk. It had rotted away from the inside out creating a tube. It was also light enough to carry back to the cabin where he prepared it by smoothing around the edges and removing the dead wood.

He then began to channel a new section of the stream heading towards the woods. He didn't join the two channels just yet. Instead he left a small barrier closing off one section of the fork. The shower wasn't going to be too far in, but was going to be enough for some privacy. Not that they really needed that at this stage, but he figured it would be nice to have.

Tobias picked a nice spot just inside the tree line where the hill sloped at more of an angle. It was the perfect place to set up the shower. He found a few branches and shaped them into a "Y" to act as brackets. They held the hollow tree trunk out from the hill, creating a sharp drop for the water.

"Man this is tough work. Good thing this isn't a competition. I certainly wouldn't win any awards for it. However I might on practicality." After a small pat on the back from himself, he carried on with the project.