Chapter 128: Transformation
"Come on, you can do one more rep!" Tomoko encouraged, her voice sweet but teasing as Shin pushed the bench press bar upward with everything he had.
His powerful arms flexed hard, veins standing out against the thick muscle, his broad shoulders and chiseled chest glistening with sweat under the gym lights.
He had changed so much in the last few months. What was once a fat boy had transformed into something closer to a Greek god. He had wide, muscular shoulders tapering down to a narrow waist, every ridge of his abs sharply defined.
Tomoko’s eyes drifted lower, lingering on the enormous bulge straining against his tiny workout shorts. The thin fabric did almost nothing to hide how thick and heavy he was, the outline clearly visible as he strained.
Not that she was any more modest.
They were alone in the private gym built inside her sprawling mansion, so Tomoko had no reason to hold back.
She wore a tiny black sports top that was at least two sizes too small for her massive breasts.
The thin material was stretched obscenely tight across her chest, her hard nipples clearly poking through as her heavy tits jiggled with every movement. Her toned abs, slim waist, and wide, fertile hips were completely on display.
"Maybe you need a little extra motivation..." she purred, turning around slowly and dropping into a deep squat right in front of him.
The already skin-tight yoga pants she wore were pushed to their absolute limit by her massive, bubble butt. The fabric clung to every curve like a second skin.
But the most shameless detail was the large hole she had deliberately cut into the crotch of her pants. As she spread her legs and lowered herself, her smooth, wet pink pussy was exposed.
Of course, she wasn’t wearing any panties... or a bra.
The lewd sight made Shin growl with effort as he forced out one more powerful rep, his arms shaking.
Before he could rack the bar for another, Tomoko moved quickly, stepping forward and straddling the bench so her legs were spread wide open right above his face.
Her dripping pussy hovered teasingly close while her massive tits hung heavily above him, swaying hypnotically with every breath.
Shin’s eyes flicked between her glistening folds and the perfect, jiggling swell of her breasts, clearly torn on where to focus.
Tomoko smiled down at him with a naughty, knowing grin as she helped him with the last repetition.
Then, as usual, while Shin was resting before the next exercise, she pulled his massive cock out of his shorts and sucked it for a full minute. Thanks to that ritual, her brother would be hard all the time in the gym.
"Now, let’s go to the last round," she said with a perverted smile.
Tomoko helped Shin rack the bar with a wicked little laugh, then climbed onto the bench. She swung one leg over him and sat directly on his lap, facing him, her thick, juicy ass cheeks spreading wide as she settled her weight right onto his throbbing, exposed cock.
The massive shaft nestled perfectly between her plump ass cheeks, the hot length trapped against her bare, dripping pussy through the obscene crotch hole in her yoga pants.
She wiggled slowly, grinding her soft, heavy ass down onto him, letting the slick folds of her cunt slide teasingly along his veiny underside.
"Last round, oniichan~" she purred, voice dripping with lust.
Shin groaned, gripping the bar again, arms already burning. Every time he pushed the weight up, Tomoko rewarded him by squeezing her glutes and rocking her ass back, milking his shaft between her cheeks.
"Come on... one more," she whispered hotly against his ear, her wet pussy kissing the head of his cock on every grind. "For me."
She never stopped moving, shamelessly using her perfect body to edge him through the final brutal reps, her massive ass relentlessly pressing and rubbing against his aching, rock-hard cock until the set was done.
"Hey! It’s not fair, I’m the only one who can call him oni-chan!" Yumemi showed up and complained.
She was wearing more common workout clothes because she didn’t expect to run into Shin. Usually, he trained earlier in the day.
"Oh! I wish my ass was that big," Ana commented, slapping her best friend on the butt and basically ordering her to leave Shin’s lap.
Ana knew she was not curvaceous enough to pull the moves Tomoko did during training, but she also had her own.
First she placed a kiss on Shin’s cock, then she slowly and sexily began to undress, removing her training gear.
"Why are both of you here?" Shin asked, blinking in surprise as he put the training bar in place.
He had finally finished his workout routine, so he was still a bit tired.
"I have begun training..." Yumemi said a bit shyly.
Then Ana stepped to her side and grabbed the gamer girl’s belly. She was still a beauty, but small signs of her laziness were showing.
"She was afraid she would be left behind if she didn’t train enough. So I took on the responsibility to make her sexy!" Ana, who was now completely naked, said.
"Yes, but, Oni-chan, she has been a complete demon with me!" Yumemi complained, and just then Shin noticed how her legs were trembling. "I can’t take it anymore!"
The pink-haired girl jumped on her big brother, pressing her face against his broad shoulder, and her tits against his abs.
"You became so sexy~" she said in a murmur that sounded like a moan. "Please, hug me just a bit, so I can recover my energy."
"Hey! Wait, it’s my turn first. I have to show him what the perks of having a flexible girlfriend are," Ana said.
’This is perfect. I will regenerate your muscles, so you should go to another training round!’ Lilel sounded happy in Shin’s mind.
The mix of sex and training was ideal for him to level up even more. What followed was a chaotic training session.
Ana was the first to get what she wanted. First, she asked Shin to push her up, then, with him still holding her, she opened a perfect split, her legs spread impossibly wide.
Showing her core strength, she remained still in that position, turning her own flexible body into a living bench press bar. Her dripping pussy hovered directly above his face.
"Push me up. Every rep, you get to taste me."
Ana was light, so Shin actually loved the exercise. And he almost made her cum just with his tongue, even in that weird position.
Next, Tomoko didn’t even let him rest. She climbed onto his back the moment he dropped to the floor for push-ups.
"Chest day isn’t over," she purred, wrapping her thick arms around his neck and pressing her massive, heavy breasts hard against his shoulder blades. Her hard nipples dragged across his skin with every movement.
Shin growled and started pumping out push-ups. Every time he lowered himself, Tomoko’s enormous tits squished even tighter against him, her soft weight adding delicious resistance.
Next came Yumemi, now completely bottomless. She bit her lip and stepped in with Tomoko’s help. They aligned her tight, dripping pussy right over Shin’s throbbing cock while he hung from the pull-up bar, arms burning.
"Hold on tight, oni-chan~" Yumemi moaned.
She wrapped her legs around his waist and sank down, impaling herself in one smooth motion. The moment his thick cock stretched her open, she clung to him desperately, arms locked around his neck, tits pressed to his chest.
Every brutal pull-up made his body rise and fall, fucking her deep and hard with each rep. Yumemi moaned loudly as she was bounced on his cock, her walls clenching greedily around him.
The session turned even more chaotic.
Ana returned, dropping into a deep bridge position so Shin could fuck her throat upside-down while doing squats with Tomoko sitting on his shoulders, her soaked pussy grinding against the back of his neck.
Tomoko made him do Bulgarian split squats while she knelt between his legs, sucking and slurping noisily on his balls, her massive tits resting on his thighs.
By the time they finally let him stop, Shin was drenched in sweat, muscles trembling, and his cock was painfully hard, slick with all three girls’ juices.
"Last finisher," Tomoko announced with a perverted smile.
All three girls lined up in front of him, backs turned, and started doing squats, but instead of air, they were squatting straight down onto his massive, throbbing cock.
They kept rotating, three perfect asses rising and falling, three dripping pussies taking turns swallowing his cock relentlessly. This was not the first time Shin’s workout evolved into an orgy, so the girls knew very well what to do.
Finally, completely spent, Shin collapsed onto the bench, chest heaving, cock still rock-hard and glistening.
That was when Ange walked in.
She was wearing nothing but one of Shin’s oversized hoodies, the hem barely covering her thighs. Fresh, dark hickeys covered her neck and the tops of her breasts, clear evidence of the fact that she won the lottery to be on Shin’s bed last night. Her hair was still messy, cheeks flushed.
Ange leaned against the doorframe, watching the three girls still squatting and riding Shin’s cock with tireless energy.
"Wow... you girls really have a lot of stamina," she said with a tired but amused smile, gently rubbing one of the bigger bite marks on her inner thigh. "I can barely walk after last night, and you’re still going this hard in the gym?"
Tomoko laughed breathlessly without stopping her squats. "Of course! We have to keep up with big bro~"
Ange shook her head, smiling softly. "Aiko and I will bring snacks later. Ana’s probably staying the night again, right?"
Ana answered with a particularly deep squat and a shameless moan: "Obviously~."
The devilish blond was still not officially living in Eva’s mansion, but she would stay there basically every time she could. Aiko and Ange, on the other hand, would usually just stay for the weekends.
Aside from that, Shin’s family was already fully living in the mansion.