Nick563
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Late puberty - part 2 (final)
🕑 Added 2022-02-05 17:40:59 +0000 UTC**This story may contain: huge muscles, muscle growth, huge cocks, cock growth, anal, excessive cum, hardcore sex, squirting, drugs, steroids and probably some other great stuff.
Moans and grunts could be heard from Lucas’ room, just like Emily predicted. She stopped in front of the door and put her ear next to it to hear the action. “Oh fuck babe!! Suck that big dick! You like blowing my big dick like a good girl, huh?” Lucas moaned as his girlfriend Rena could be heard gagging on his cock. Emily was boiling with anticipation at this point. She gently knocked on the door and Lucas responded: “Get lost! We’re busy!” But Emily had no intention of doing that. She entered her brother’s room with authority, making sure to put her new body on full display as she did so. She stood there with her hands on her muscular hips, her huge cock pointed straight at the two startled lovers. “What the fuck? Wait… Emily?? How… ?” Emily didn’t respond yet. She wanted to bask in the glory of her new physique first. Rena let go of Lucas’ cock and Emily finally got a good look at it. He was probably 8 inches long and pretty damn thick too. When compared to an average man, he was more than impressive, but given Emily’s recent growth spurts, he was becoming less of an alpha and more of a beta by the minute. “Well, I guess puberty finally caught up to me!” she said with lewd grin as she did a double biceps flex. Lucas almost couldn’t believe that the same girl he just picked up from school a little while ago was now standing naked in his room with arms bigger than his own, not to mention a gigantic throbbing cock. If Lucas was completely in denial of what was happening, his girlfriend was almost hypnotized by Emily’s new body. She always liked big guys with big cocks, but seeing such a mammoth dong mounted on a girl so muscular and curvy proved too much for her to handle. She started approaching Emily like a cougar in heat, almost entirely forgetting her about boyfriend’s needs. “I think your girlfriend likes my transformation!” Emily grinned as she looked at the curvy teenager kneeling before her like a good little slut. “I mean… look at her, Lucas! She’s awesome! I can’t help it… I… need her to fuck me…” Rena struggled to say, staring like a dumb bimbo at the muscular futa before her. “But… babe… you can’t do this! She’s my sister!” Lucas tried to protest. But Rena wasn’t hearing him. Her mouth was already glued to Emily’s dong and her hands were already fondling her huge futa balls. “Good girl!! Keep it up!” Emily said as she gently grabbed Rena’s head and pushed more inches of cockmeat inside her mouth.
Lucas watched speechlessly as his hot girlfriend gave his sister a slurpy blowjob with extreme passion and near perfect technique. She was seriously enjoying Emily’s monster dong and fat balls. “Oh fuck yeah! Keep sucking!!” Emily moaned as she looked at the beautiful blonde pleasuring her cock. “Isn’t it hot, Lucas? Seeing your girlfriend and you sister being such good friends?” Emily said jokingly, taunting Lucas as she shoved more inches inside Rena’s throat. The blonde was starting to choke because of the monstrous size of the futa’s cock, but didn’t show any sign of wanting to stop. “Hey! She’s choking! Pull out!” Lucas said, visibly worried about his girlfriend. “She’ll be fine! Besides, I’m really close… Oh fuck!!” Emily said as she pushed her entire cock inside the girl’s tight throat. Her neck was bulging and fat veins could be seen on its surface, veins which belonged on Emily’s throbbing dong and looked like they were ready to burst at any moment. “Oh shit!! I’m cumming!!” the muscular futa groaned as she unleashed shot after shot of creamy jizz into Rena’s guts. The cumblasts were so powerful she had to pull her cock out to make sure the girl wouldn’t suffocate for real. She dumped her remaining load on the floor, squeezing her cock to make sure she got everything out. “That felt fucking good!! Your girl is a pro cocksucker, bro!” she cheerfully said to her brother. Lucas couldn’t believe how much his sister came. He wouldn’t be able to produce so much spunk in an entire week, let alone after a single orgasm. “Emily, I think…” he wanted to say, but was abruptly cut off by Emily. “Shush, little bro!! This is my favorite part!” Emily said, feeling the same tingling sensation she knew and loved. She started growing again, but this time the process was less intense than before. Her muscles bulged bigger and her cock increased in both length and girth as she enjoyed the process with all her being. She grabbed her boobs and shamelessly began playing with her hard nipples as her body added pound after pound of pure muscle mass. She moaned louder and louder as her body evolved further while Lucas and Rena watched without knowing what to make of it all. Emily’s pussy started leaking a small river of juice down her powerful legs as they grew thicker and meatier that a pro bodybuilder’s. Her arms exploded, becoming almost 3 times the size of Lucas’, her tits added about 50% more mass to their gorgeous roundness and her back widened further, becoming almost literally a brick wall. Emily’s cock reached a whopping 13 inches hard, with balls the size of coconuts and veins the size of Rena’s pinky finger spread all over their surface. “Oh fuck!! It feels so fucking good!!” Emily moaned as her transformation got closer to its end. When it was finally over, Emily stood 5’5’’ tall and 240 lbs. She was a muscle-packed beast with a huge fucking cock and she loved it. She flexed her muscles one by one, checking out every inch of her body from every angle.
“Ok this is not fucking normal! Nobody just grows like that out of thin air. Emily, we gotta take you to a doctor…” Lucas said, unable to make sense of what was happening to his sister. “Stop being such a bore, little bro! I told you, it’s just late puberty! Besides, I think this was the last growth spurt anyway.” Emily said so casually it actually made Lucas even more worried about her condition. “No, this can’t be right. We really should…” the brother to say, but was cut off again, this time by his girlfriend. “Lucas, she said she’s fine! I mean… she’s more than fine! Fucking look at her! She also said that this was probably the last growth spurt so why don’t we just relax and try to enjoy it? Come on, don’t be such a grumpy boy!” Rena said, clearly hell bent on getting plowed by Emily’s gigantic dong. “Yeah, little bro! Don’t you want to see how this body feels up close?” Emily said with extreme lewdness in both her eyes and voice. She then took a seat on the edge of the bed and started to gently stroke her veiny cock with one hand. Just seeing her gorgeous muscles flex and contract as she stroked her cock was truly a sight to behold. Rena took Lucas’ hand and they both got closer to the musclebound futa. She was even more impressive up close. Seeing so many small ridges and canyons perfectly spread across her veiny musculature was truly a boner-inducing experience. Even with intense training and many years of perfect dieting and supplementation, Lucas couldn’t hope to achieve such a godlike physique. He also couldn’t deny that Emily’s tits were making him horny as hell. His erection got bigger and harder to control the closer he got to her. Eventually he was hard as a rock, just like his jacked-up sister. “I knew you’ll come along! I take it you like my new body too, don’t you? Do you like my big round tits, Lucas? Would you like to put your big hard boy-cock between them?” Emily said as she squeezed her huge knockers together to tease her brother even more. Lucas didn’t respond. He just stood there, watching those wonderful tits being rubbed against one another, his dick becoming so hard it actually started to hurt. Rena had other ideas, though. She wanted to take a closer look at those giant nuts that filled her up a few minutes ago. She assumed the horny cougar position yet again and started playing with Emily’s balls. Rena loved the smell, the texture, the hardness and the sound of thick cum sloshing inside those monster nuts. “Come on, little bro! I’m gonna give you a titjob!” Emily said as she grabbed Lucas’ dong and placed it between her tits. She then started moving her marvelous pair of boobs up and down her brother’s cock, making him moan and grunt with pleasure.
A fiery blonde was licking and sucking her fat nuts while she had her brother’s dick stuck between her tits. Emily wouldn’t have been able to imagine such an outcome earlier that day, no matter how hard she would’ve tried. “Let me taste this big cock of yours, little bro!” Emily said as she stopped moving her tits and put her mouth on Lucas’s throbbing dong. She kept it buried between her tits as she started pleasuring his cockhead with her tongue, then with her entire mouth. Lucas couldn’t believe that his own sister was sucking his cock, but it felt so good he couldn’t concentrate on such details at the moment. Emily kept sucking until Lucas couldn’t take it anymore and came hard. Feeling that he was getting close to the bursting point, Emily wrapped her mouth tightly around his cockhead, making sure to drink every last bit of cum her dear brother was about to give her. And he did give her a lot. Lucas grunted like a wild beast as he sent load after load of thick semen into his sister’s mouth and throat. Emily swallowed it all and waited for him to finish before she let go of his cock. “Your cum really tastes good, bro! We should do this more often!” Emily said with a girly giggle as she delivered the last few drops of cum still left on her lips straight to her belly. “Okay! Who’s ready for part 2?” Emily said cheerfully. “Me! Me!” Rena said as she got back up. Then they both looked at Lucas, expecting him to be just as enthusiastic. Truth be told, he was still recovering from the intensity of the previous orgasm. It proved so powerful he had no more cum left in his balls. “Bro, don’t tell me you’re done already?!” Emily said, giggling as she looked at her brother’s rapidly deflating manhood. “I… aah… I just gotta catch my breath, you know…” Lucas said between heavy breaths, struggling bring his cock back to life. Rena took up the doggy position on the bed, spreading her asscheeks apart and inviting the giant futa to wreck her pretty little cunt. “We don’t have time to wait for him! Go on, Em! Fuck me with that big veiny pillar of hard meat!” Rena said, yearning to be stretched out by Emily’s monstrous member. Emily gave that big ass a few slaps before she started working on the girl’s leaking cunt. “Oh fuck!! Put it inside me! I can’t take it anymore!” Rena begged. Emily positioned her huge cock at the entrance to the girl’s cunt and, with one swift motion, shoved 3/4 of her 13 inches right into her love-tunnel. “OH FUCK!! FUCK!! SO FUCKING BIG!!” Rena yelled a she felt her womb being stretched out in order to accommodate the futa’s superior dick. Lucas watched with visible concern as his muscular sister started pounding his slutty girlfriend without any concern for her well-being.
Emily started thrusting harder and harder, each time getting deeper into Rena’s surprisingly spacious cunt. “FUCK YES!! WRECK ME!!! FUCK MY CUNT UNTIL I CAN NO LONGER STAND!!” Rena yelled like a bitch in heat as she felt her guts getting rearranged to make room for Emily’s monstrous pussy-breaker. “Damn, I knew you were a hopeless slut from the first time I met you, but now you’re exceeding all my expectations!” Emily said as she slapped the girl’s ass again, turning it red hot and sending shivers up her spine. Rena was feeling the full extent of the futa’s sexual might each time her brick-sized abs collided with her battered asscheeks.”Em… maybe you should slow down a little… I think…” Lucas tried to say to his sister, but was brutally cut off again by his girlfriend. “SHUT UP, LOSER!! WHAT’S THE MATTER? CAN’T GET YOUR DICK UP? THEN SHUT THE FUCK UP AND TAKE NOTES FROM YOUR BIG SISTER!! SHE’S FUCKING ME SO GOOD I’M GONNA LOSE MY FUCKING MIND!!” Rena yelled at her boyfriend while she enjoyed the brutal pounding she was receiving. “Ouch! That had to hurt…” Emily giggled before grabbing Rena’s hair with one hand. She wanted to all of her 13 inches into her hungry cunt. Seeing the image of a futa bigger than a pro bodybuilder utterly dominating his hot girlfriend with a cock as thick as his arm would surely be more than enough to make any man question his status as an alpha. That’s what Lucas was feeling now: he was small, weak and unable to satisfy his own girlfriend. More than that, Rena begged for more of Emily’s cock with every chance she got. She was not his girlfriend anymore. She had been transformed into a cock-crazed slave by his freakishly muscular and hung sister. “Don’t you worry, little bro! I’ll be the man of the house from now on! I mean, it’s not like you got the inches to demand that position!” Emily grinned, taunting him one more time as he continued to fuck Rena’s tight pussy into oblivion.
They fucked like this for about half an hour, time in which Rena had close to a dozen powerful orgasms. Even though she was covered with sweat, Emily didn’t look tired at. Her muscles looked even more round and perfect now that they were nice and shiny. She continued to fuck Rena until she eventually felt her veiny balls contract, releasing a small river of cum into the girl’s guts. “FUUUUUUCKK!!” both Emily and Rena screamed as they came at the same time. The girl’s belly bulged bigger as she got filled with cum while Emily’s balls deflated just enough to let her enjoy the moment. They started expanding again soon after, signaling they were already producing new gallons of delicious seed for the monstrous futa’s pleasure. “Oh my God! I never came so hard before. Fuck I thought I was gonna go mad with pleasure!” Rena said, struggling to catch her breath. Her belly was so full it looked like she was 9 months pregnant with twins. “Look at this! I can’t believe a human being can cum so much!” the blonde said, gently caressing her cum-filled belly. “Ready for more, Ren?” Emily said, grabbing her still erect cock with one hand. “Fuck yeah!! But I’m so full!! I can’t fit anymore cum inside me.” Rena said, massaging her huge belly with both hands. An evil smile appeared on Emily’s face in that moment. She grabbed the girl’s belly and began to squeeze it, sending a powerful jet of hot jizz flying out of her pussy and heading straight towards her brother. “What the f…” Lucas tried to protest, but was quickly dropped on his butt by the sheer power of the blast. The girls giggled as Emily squeezed harder, covering her brother from head to toe in her abundant seed. Twenty seconds or so later, Rena’s belly was back to normal. “Girl I can’t believe how much fun I’m having with you!!” Rena said as she hugged Emily, resting her head against her hard abdomen. “Why don’t you go take a bath, huh bro? We’ll be here for quite a while. Oh and please bring us something to eat when you come back. And maybe a couple of those birth control pills. Your girl is gonna take so much cum she’ll definitely get pregnant without them.” Emily said, visibly aroused and ready to fuck again. She got on her back on the bed and flexed her arms, wanting to feel her huge pumped up muscles again before going on another sex session. “God I love his body!” she said as she kissed her bulging biceps. Humiliated beyond any stretch of the imagination, Lucas left them to do what they please in his room, wanting nothing more than to remove the intense smell of cum from his body. As he slammed the door shut behind him, he could see his girlfriend mounting Emily’s cock with such passion it could turn a man insane. “FUCK YEAH!! WE’RE GONNA HAVE SO MUCH FUN TOGETHER!!” Rena said as she felt the monster penetrate her guts just as hard as before. The sounds of cock-riding kept echoing inside Lucas’ head even as he got further away from them, unable to think about anything other than his muscular sister becoming the “man” of the family instead of him.
Comments
Nick563
We'll definitely have that in a future story
Skylar_Dijin
What if she grew two cocks?
