The group training session started exactly as Momo had planned. She'd divided the two-hour block into specific segments: warm-up, Quirk-specific drills, combat scenarios, and a cool-down. Her organizational skills were on full display, with a detailed schedule written on a whiteboard she'd created with her Quirk.
"The first thirty minutes'll be cardiovascular warm-up and basic combat forms," Momo explained, pointing to the training area. "Then we'll move on to Quirk application drills."
Ren stretched his arms over his head and felt the pleasant burn in his muscles. The gym was spacious, with padded floors and adjustable equipment. It was the ideal place for what they needed.
It's perfect for what I'm planning, he thought with a small internal smile.
Two more figures entered the gym. Tsuyu walked in with her characteristic calm demeanor, wearing a tight green gym uniform that complemented her frog-like appearance. Behind her came Inko, who looked somewhat nervous in standard UA athletic wear.
"Kero, I'm sorry we're late," Tsuyu said with her usual bluntness. "Recovery Girl needed us to help her with something."
"It's no problem, Tsuyu-chan!" Ochako waved enthusiastically. "We're just getting started!"
Inko gave a small bow. "I hope it's okay that I joined. Yaoyorozu-san mentioned the training group and I thought it'd be good practice."
"The more the merrier!" Mina pumped her fist. "Group training's much more fun than solo practice."
Ren studied the gathered group with growing interest. Seven people in total, counting him. Six young, attractive women, all in tight athletic clothing designed for maximum mobility.
This session's gonna be incredible and also very full of distractions, he thought. Probably both.
"Alright everyone," Momo clapped her hands. "Let's start with basic cardio. Follow my lead."
They began with jumping jacks, then moved to high knees, burpees, and mountain climbers. Ren kept the pace easily, as his body was strangely adapted to the physical demands of UA. But his mind was elsewhere.
He activated his X-ray vision subtly, letting his gaze roam over the group as they exercised. The sportswear left little to the imagination, but seeing underneath added a whole new dimension.
Momo's sports bra was doing heroic work containing her chest while she moved. Every jump caused a slight bounce that the garment struggled to hold back. Under the compression fabric, Ren could see the soft curve of her breasts and the outline of her nipples. His vision traveled lower, past her toned belly to the junction of her thighs.
Too modest, he thought, studying the neat triangle of dark hair visible under her shorts and underwear. It was trimmed and elegantly maintained. The hair was fine and looked soft, shaped with clear intent and care. It's very typical of Momo, he reflected. Even her personal grooming is organized and refined.
Ochako's smaller build meant there was less to contain, but her shorts rode up slightly with every movement. Her pink underwear was visible to his vision, and under that... a more abundant bush, he observed with appreciation. It was light brown, almost caramel, with a fluffy texture that looked incredibly soft and inviting. It wasn't trimmed at all; it was natural and unpretentious, just like Ochako herself.
Mina's acid-resistant skin had a unique texture under his X-ray vision, and her sports bra was bright yellow to match her personality. She wore matching yellow underwear that hugged her curves. Between her thighs, Ren noticed something unexpected.
Her pubic hair was a bit denser than the others, with a rebellious quality that looked coarse or wiry. But there was something about it that made Ren want to check. He focused his telekinesis, extending invisible fingers to gently touch the pink curls.
It's incredibly soft, he realized with surprise. It looked wild but felt like silk. And there was something else... a faint, transparent pink glow at her entrance, barely visible even with X-ray vision. Is it her Quirk? Some kind of natural secretion? He stored that information for later exploration.
Tsuyu's frog physiology was fascinating to observe. Her sports bra was specially designed to fit her body type, and under her gym uniform, Ren's enhanced vision revealed something unique. Her pubic area had a small patch of fine, almost transparent green fuzz. It was barely there, a middle ground between being completely shaved and having hair grown out, with a cute quality that fit her amphibious nature.
Appropriate for her Quirk, Ren thought. Even her vaginal hair's adapted.
Inko seemed the most modest of the group, wearing clothes that covered everything. But that didn't stop Ren from appreciating what lay beneath the layers. Her green pubic hair was more abundant and youthful-looking, with a wild and untamed quality that briefly reminded him of Mitsuki's natural grooming. But there was something different about Inko's. The green curls seemed to frame and highlight the tender pink of her inner folds, creating a visual contrast that made the delicate color of her most private parts stand out brilliantly. The effect was unexpectedly arousing.
And Toru... well, Toru was invisible. But he could see her perfectly. Her floating gym uniform contained a very real and sexy body underneath. She was completely shaved between her legs. Not a single hair. It was a smooth-looking surface.
It makes sense with her Quirk, Ren reasoned. If her body bends light around her, body hair'd probably interfere with the refraction. Or maybe she just prefers it that way.
"Hayashi-san, are you keeping up?" Momo called out, noticing his momentary distraction.
"I'm perfectly fine," Ren replied, executing a flawless burpee. "I'm just regulating my energy."
They moved to the next phase: combat forms. Momo demonstrated a series of punches, kicks, blocks, and defensive stances. Everyone followed her, moving their bodies in synchronized patterns. That's when Ren decided to experiment.
He focused his telekinesis first on Momo. Specifically, on the fabric of her sports bra where it touched her skin. He made the material slightly rougher to the touch. It wasn't enough to be painful, just enough to create constant and subtle friction with every movement.
Momo continued the demonstration, moving into a roundhouse kick. As she moved, the rough fabric brushed against her nipples. Her eyes widened a bit. She hesitated for only a fraction of a second before recovering.
"Uh..." she touched her chest briefly, confused. "This sports bra's new. I think the material's still a bit stiff."
Perfect, Ren thought. She's blaming the clothes.
He maintained the effect as he moved to his next target. Ochako was bouncing on her feet, preparing for her turn to demonstrate a move. Ren focused on the elastic band of her athletic shorts. He made it vibrate, creating friction against her skin. Ochako stopped jumping suddenly. Her face flushed slightly.
"Are you okay, Ochako?" Mina asked.
"Yes! Completely fine!" Ochako replied quickly, though her voice was a bit higher than normal. "It's just... this elastic's really tight today. I must've picked the wrong size."
She pulled at the waistband of her shorts, trying to adjust it. The movement only caused the vibration to shift to a different area, closer to her fluffy brown curls, and she quickly stopped fiddling.
That's two, Ren thought, feeling a surge of excitement. Let's see how far I can take this.
Mina was next. She was demonstrating an acid-enhanced punch when Ren decided to try something real. He extended his telekinesis more boldly this time, and his invisible fingers found that soft pink hair between her thighs. He brushed it gently, confirming what he suspected. It was incredibly soft, like touching fine silk or delicate fur. And when his telekinetic touch reached her entrance, he felt that strange pink glow.
It's liquid, he realized. Her Quirk's producing some kind of secretion.
The moment his invisible fingers made contact with that liquid, Mina's entire body jerked.
"Whoa..." she gasped, her eyes going wide. She completely forgot the training dummy she was about to hit.
"Mina? What's wrong?" Tsuyu asked with concern.
"Nothing! It's just..." Mina's pink skin was becoming even more intense. "Is it really hot in here? My skin feels super sensitive today."
"The temperature's set to standard training conditions," Momo replied, checking a thermometer on the wall. "Twenty degrees Celsius."
"I see." Mina shifted uncomfortably. "Maybe I'm pushing myself harder than I thought."
But Ren could see what was really happening through his X-ray vision. That pink glow was increasing and the liquid production was intensifying. And wherever he touched her skin, he could see her body's reaction becoming stronger.
Her Quirk makes her more sensitive, he realized. It's a feedback loop. The more she gets aroused, the more liquid she produces, which makes her even more sensitive.
Tsuyu watched the others with her observant expression. When it was her turn to demonstrate, Ren decided to try something different with her. He focused on the natural moisture of her skin. Tsuyu's frog Quirk meant she naturally secreted a thin layer of mucus to keep her skin hydrated. Ren used his telekinesis to make that layer move, creating a sliding sensation all over her skin. At the same time, he sent invisible fingers to that almost nonexistent patch of green fuzz between her legs, stroking it gently.
Tsuyu executed a perfect spinning kick. Mid-motion, she froze.
"Kero," she said, blinking her large eyes. "That felt weird."
"What did?" Ochako asked.
"I don't know how to describe it. My skin was moving and it felt... good." Tsuyu touched her arm to experiment and then shifted her stance a bit. "Kero. It must be my Quirk acting strange. It does that sometimes when I train intensely."
Her throat moved as she swallowed hard, and Ren noticed her thighs pressing together slightly. The transparent fuzz between them was now glistening with more than just normal moisture.
Inko seemed the most reserved of the group and stayed a bit apart. When Momo called her to practice a defensive stance, Ren noticed how nervous she looked.
Let's help her relax, he thought, though his definition of "help" was definitely questionable.
He focused on the fabric of her underwear beneath the gym clothes. Similar to what he'd done with Mitsuki during the volleyball game, he created a soft vibration. It wasn't anything intense, just enough to be noticed against that wild green bush and the tender pink skin underneath.
Inko took the defensive stance. Her eyes flew wide and her posture went rigid.
"Midoriya-san? Is the stance uncomfortable?" Momo asked with concern.
"N-no! I mean, yes? I mean..." Inko's face was bright red. "I think... uh... the seam on these gym clothes is in a weird spot."
Through his X-ray vision, Ren could see exactly what was happening. The vibration was creating friction against her sensitive flesh, and that bright pink color was becoming even more pronounced, flared by an arousal that contrasted beautifully with the green curls framing it.
"We can take a break if you need to change," Momo offered.
"No! I'm fine! Completely fine!" Inko insisted, though it was evident she wasn't. Her thighs were squeezed tight and she was breathing a bit faster than the exercise warranted.
This is going better than I imagined, Ren thought. Six women experiencing inexplicable sensations.
Toru approached him during a water break. Her voice dropped to a whisper only he could hear.
"You're very quiet today," she murmured. "Normally you're more... interactive during training."
"I'm just focused on improving," Ren replied naturally, though his mind was on other things.
They moved to combat scenarios. Momo had prepared simulated battle situations where they'd pair up to fight using their Quirks.
"Hayashi-san, you're with me," Momo announced. "Uraraka-san with Ashido-san. Asui-san and Hagakure-san with Midoriya-san."
the matches began simultaneously. Ochako and Mina were facing off on the left side of the gym, with Ochako floating debris while Mina dissolved it with acid. Tsuyu, Hagakure, and Inko were on the right side, with Tsuyu's tongue darting out as Inko prepared to defend.
Perfect, Ren thought as he watched everyone dive into their own matches. They're completely focused.
He extended his telepathy subtly to ensure the others' attention remained fixed on their own battles. A slight mental nudge here, a telepathic suggestion there. Nothing obvious, just enough to keep their minds focused intensely on their immediate opponents.
"Ready, Yaoyorozu-san?" Ren asked, taking a defensive stance.
"Of course, Hayashi-san," Momo replied with professional determination, creating an elegant bo staff from her arm. The rod materialized with a red glow before solidifying in her hands.
She assumed a classic combat stance, the staff spinning in a defensive arc. But Ren noticed something immediately: her nipples were already visibly hard under the sports bra, pressing against the fabric.
She notices it, Ren thought, seeing Momo's eyes briefly dart down in evident embarrassment. She knows they're like that and she's embarrassed she doesn't understand why.
The fight began. Ren telekinetically lifted several training weights and launched them toward Momo in a staggered sequence. She deflected them with movements of the staff, her reflexes sharp and her technique flawless. But with every movement, every turn, every block, those hardened nipples rubbed against the rough fabric of her sports bra. Ren had kept that effect constant, and now it was paying off.
Momo made an almost imperceptible grimace during a particularly dynamic dodge. The friction was becoming impossible to ignore.
Why am I so sensitive? she wondered with growing frustration, blocking another weight. This's never happened to me during training. Is it the new bra? Or is it something else?
Ren intensified his attack, throwing more objects from different angles. Momo responded, her bo staff spinning in complex defensive patterns.
It's time for the final move, Ren decided.
He launched a heavier weight, forcing Momo to take a side step to deflect it. In that moment of imbalance, Ren activated his telekinesis. The hooks on Momo's sports bra snapped open instantly, as if the mechanism had failed. At the same time, the seams on the straps loosened. The sports bra lost all its support function.
Momo's breasts, suddenly freed from the compression, bounced with her body's movement. The loosened fabric slid down.
"What...?" Momo gasped, her eyes widening with horror as she felt the bra fail.
In that precise instant, Ren lunged forward as if he were going to attack with a melee strike. Momo, by combat instinct, turned her staff to block. But Ren had already calculated everything. He used telekinesis to nudge his own ankle just enough to lose his balance convincingly. At the same time, he pulled on Momo's staff with invisible force, making her stagger forward.
They both fell. But Ren controlled every millimeter of the trajectory.
Momo fell on top of him with a cry of surprise. Her sports bra, completely loose now, slid up with the movement. Her breasts came out completely, naked and glorious. And thanks to Ren's telekinetic manipulation of the exact angles, Momo's right nipple landed directly in his open mouth. At the same time, by pure "coincidence," Momo's crotch impacted directly against Ren's raised knee.
The effect was instant and devastating.
"MMPH!" Momo's cry was muffled by her own hand as a wave of intense pleasure shot through her.
The hypersensitive nipple, which had been rubbing against rough fabric for thirty minutes, was suddenly surrounded by the wet heat of Ren's mouth. And her intimate area, already aroused and sensitive, had just received direct pressure against a hard point. Ren didn't waste a second. He closed his lips around the nipple and sucked hard.
"Ngh!" Momo gasped, her entire body shuddering.
Oh God, she thought in a panic. What's...? Why does it feel so...?
Ren maintained the suction while his free hand slid up, seemingly to "help her up." But instead of pushing her up, his fingers found her other naked breast. He squeezed gently; his thumb found the left nipple and rubbed it in slow circles.
Momo's brain went into shock. Two sources of intense stimulation on her hypersensitive breasts, plus the constant pressure against her wet crotch. And then Ren moved his knee up and down. A subtle rhythm, rubbing directly against her clitoris through the thin layers of fabric. That elegant triangle of dark hair provided no protection; the friction was direct and relentless.
Momo's eyes rolled back.
"Nghhh... ahhh..." muffled moans escaped her lips as her hand pressed against her mouth in desperation.
This can't be happening, she thought weakly, her ability to reason collapsing under the assault of sensations. I can't... I can't be feeling like this... here... now...
But her body had other ideas. Her hips began to move involuntarily, rubbing against Ren's knee with shameful need. Ren sucked harder, his tongue lapping around the erect nipple while his fingers pinched and pulled at the other. His knee maintained that steady rhythm, up and down, creating exquisite friction against her most sensitive point.
"Hayashi... kun..." Momo's voice came out broken, barely a whisper. "We have to... this is..."
But she couldn't finish the sentence. Another wave of pleasure hit her as Ren gently bit her nipple.
No! Not here! her mind screamed. The others can see us! This's inappropriate! I have to stop it!
But her body wasn't listening. Her hips kept moving, seeking more friction. Her hands had found Ren's shoulders, but instead of pushing him away, they were clinging to him.
Through all this, the others remained completely absorbed in their own matches. Ren's telepathic suggestion kept them focused, unaware of the spectacle unfolding meters away.
Ren switched breasts, releasing the right nipple with a wet sound before capturing the left with his mouth. His now free hand found the recently abandoned breast, keeping it warm and stimulated.
"Ahh! I can't... I can't anymore!" Momo gasped, her voice desperate.
Her entire body was shaking. The tender pink of her inner folds was swollen and intense, pulsing with need. Ren's knee increased its pressure, moving faster. His teeth scraped lightly against the nipple in his mouth before he sucked it with renewed force.
And it was too much. Momo's eyes rolled completely back. Her back arched violently. Her mouth opened in a silent scream while her hand pressed so hard she almost choked herself.
Orgasm.
Intense, overwhelming, and completely unexpected. It ripped through her body like lightning, making every nerve fire simultaneously. Her internal muscles contracted in rhythmic waves, sending pulses of pleasure through her nervous system. Her crotch rubbed desperately against Ren's knee, seeking to prolong every second of ecstasy. Her breasts pressed more firmly against Ren's mouth and hand, as if she wanted to merge with him.
Ren held her firmly, maintaining the stimulation while she went through the climax. He could feel the violent tremors of her body and observe how the moisture soaked her clothes. Finally, after what seemed like minutes but were probably only seconds, Momo's spasms began to subside. Her body went limp, collapsing completely onto Ren with ragged breathing.
"Hayashi... kun..." she whispered weakly, her voice barely audible. "What...? How...?"
Ren released her nipple from his mouth with one last lick before responding in a low voice.
"Your bra broke during the match," he said in a perfectly innocent tone, as if that explained everything. "You fell on me. It was an accident."
"Accident..." Momo repeated dizzily, her brain still processing what exactly had happened.
From her perspective it looked like she was attacking him, putting her breasts in his mouth and assaulting him in an erotic way; it didn't help at all that she was totally confused.
"A very unfortunate accident," Ren confirmed, finally helping her sit up with care to cover her naked breasts with her own hands. "You should go change. That bra's definitely broken."
Momo blinked several times, trying to regain some composure. Her face was crimson, her breathing still irregular, and she could feel the shameful moisture soaking her underwear.
"Yes... yes, you're right," she managed to say, her voice shaky. "I'm going to... I need to..."
She stood up on legs that barely held her. She quickly covered her chest with her crossed arms, the broken bra hanging uselessly.
"Yaoyorozu-san?" Ochako's voice came from the other side of the gym. "Are you okay?"
"I'm fine!" Momo responded with a voice higher than normal. "My... my bra broke. I'm going to change quickly."
"Oh no! Do you need help?" Ochako offered.
"No! I'm fine, thank you," Momo was already walking quickly toward the locker rooms, her legs still shaky. "Carry on without me. I'll be right back."
As she walked away, Ren could see the dark wet spot on the back of her shorts, exactly where her crotch had been pressed against him. The others went back to their matches without a second thought, Ren's telepathic suggestion ensuring they didn't question the incident too much.
Ren sat on the floor for a moment, processing what had just happened. He touched his lips, still able to taste the sweet flavor of her skin. He looked toward the locker rooms where Momo had disappeared, wondering how she'd process this. Whether she'd blame the faulty bra, the intense exercise, or bad luck.
Whatever she decided to believe, one thing was certain: she'd never suspect that Ren Hayashi had orchestrated every second of the encounter.
And that, he thought, is exactly how it should be.
******
Where are your Power Stones, my dear readers? Have you lost interest in the story? Is this the end for Only Smut?!!! Well, to keep the dream alive, if we hit our goal of 600 Power Stones before the Sunday reset, I'll release 2 bonus chapters on top of the regular schedule. Thanks for reading, and have a wonderful day!"
Author's Note: Clicking the like button is the easiest way to tell me you want more.
I finally wrote our first fivesome! It was definitely a challenge to keep it from feeling generic, but after grinding through 5,000 painstaking words, I'm really happy with how it turned out. Anyway, I hope you guys enjoyed the chapter! If you're loving the story, don't forget to leave a Like—it's the best way to let me know you want more.
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New Fanfic Alert! > If you're into System novels, a bolder Izuku who doesn't take Bakugo's crap, and plenty of ecchi and action, then you'll love my new story!
Heroine Training System: Squeeze Me with Those Thighs