Chapter Text
Nemuri Kayama, also known as the R-18 Hero "Midnight", liked to think of herself as a patient woman. The mountain of paperwork on her desk however was trying its damndest to prove her wrong. With a sigh, she placed her glasses on the table and swept a hand through her purple mane of hair.
"Ugh, I've been at this for four hours now, if I don't do something else I'm going to lose it."
With a glance out of the window, which revealed the dark night sky, her decision was made and she stood up from her desk and left her office.
Going to the gym always calmed her mind, so she headed to the one near one of the first year training grounds. It was the closest to her office and there were never any other people there at this time.
To her surprise, when she came out of the changing room, the lights inside the gym were on and the student ID display next to the door showed one occupant. Deciding to head in anyways, now that she was here, she was even more surprised to find that the sole occupant was Izuku Midoriya, Class 1-A's "Problem Child".
"Midoriya? What are you doing here? It's nearly Midnight!", Nemuri asked, foregoing her Hero-Persona for a more sensible approach. She knew that the recent attack on the USJ had been a traumatizing event for Aizawa's class and Midoriya especially. She also knew that the boy was very socially awkward and jumpy, so "Midnight" was the last thing he needed right now.
Despite her efforts, Midoriya still shrieked and let go of the dumbbell he was currently using, which nearly landed on his foot. "Midnight-sensei! I'm sorry!", the green-haired student exclaimed, while sheepishly scratching the back of his neck. While Midoriya began spewing apologies, Midnight moved to stand in front of the nervous boy.
"Midoriya.", she said, getting his attention. She wanted to put a hand on his shoulder and reassure him that he wasn't in trouble. But the moment she raised her hand, Midoriya flinched and his eyes filled with fear for a split second. Immediately Midnight lowered her hand again with a slight frown.
She knew that she was a large woman (and quite proud of it, thank you very much) and that she could look intimidating. With her statuesque height of 6'2”, she stood half a foot taller than Midoriya. Combined with her muscular physique, it gave her a truly amazonian appearance. But she was sure that her large frame was not the source of Midoriya's behaviour. She had seen such cases before, it was the result of deeply ingrained trauma.
'How could we have not seen this before? There was no mention of bullying in his previous school records and no sign of abuse at home according to their investigation. We'll need to get to the bottom of this, but first I have to calm him down.', the Pro-Heroine thought.
When Midnight came up to him during his late training session, Izuku couldn't help but fear that he was in trouble now.
But he needed to train! The USJ had proved that he needed to be able to handle more of One for All, which meant he had to get stronger first.
Although now that the amazon of a heroine was standing before him, his resolution began floundering. Never had he been so scared and aroused at the same time. The way her spats and sports-bra hugged her generous curves and left her muscular limbs and defined six-pack exposed was forcing his member to strain in his pants. But the way her sharp blue eyes bore into him had him shaking in his figurative boots!
And when those big, strong arms enveloped him in a hug, he simply passed out.
Nemuri thought about the time she had met Izuku in the gym. Back then he had been a short, awkward, but nonetheless cute boy, with the weight of the world resting on top of his shoulders.
She liked reminiscing about those times, about how she had agreed to help him with his extracurricular workouts (because the boy had apparently never been to a gym in his life) or about how he had first opened up to her about his past and had cried into her shoulder after that. However, she liked thinking about what they had accomplished together far more. Now Izuku Midoriya was a confident and incredibly skilled young man, who was, as far as she was concerned, the Number One Hero in everything but title.
She was pulled out of her musings by a large, warm hand on her shoulder. "Come on Nem, it's time for squats now. I thought you wanted to beat the record today, unless... you're chickening out?"
Midnight looked at the person the voice belonged to and smiled. The difference between Izuku Midoriya at 14 years old and him now would be startling to anyone who hadn't witnessed, or like her, had a hand in his incredible growth, both physically and as a person.
Izuku Midoriya, Hero name "Deku", was now 20 years old. His previously unruly, curly hair had been superseded by a clean crew cut that showed off his sharp jawline and piercing eyes. Standing at 6'6" he wasn't as tall as his mentor "All Might", which Nemuri was secretly glad about, because it meant their height difference wasn't that big. As a testament to the incredible power of his quirk and all the hard work he had put into mastering it, it was Izuku's
muscle mass where he outshone the now retired symbol of peace.
His huge, muscular legs were straining the red basketball shorts he was currently wearing to their limit. Nemuri let her eyes wander over the impossible-to-hide bulge in his shorts and thanks to the facts that Izuku had chosen to work out shirtless, to the absolutely shredded muscles of his torso, primarily his eight-pack and thick, bulging pecs. Large traps and big, wide shoulders held massive arms, which were bigger than a normal person's thigh, even when unflexed. A few, thick veins snaked across his massive muscles, highlighting Izuku's insane strength.
' God, he's such a massive stud, it's so hot. ' , Nemuri thought. She did not remember anymore when their relationship had changed from "teacher and student" to "gym buddies" to "loving couple", but she was glad that it had happened. ' The things I'd let that man do to me… '
Snapping out of her reverie, her smile broadened.
"Ha! In your dreams, lover-boy", she answered his challenge, before her smile turned sultry, "Although you're very welcome to dream about me doing something else~."
Izuku chuckled at her remark and gave her a confident grin, although he couldn't help the light blush that spread across his freckled cheeks.
"I would much rather be awake for that. Now, get going and show those puny weights who's boss."
Nemuri eyed the barbell loaded with 2000 lbs with determination. She had kept up with her own training while being there with Izuku, which had resulted in them pushing each other to new heights. Breaking records had become somewhat of a sport for them both.
Izuku admired Nemuri while she was getting ready. The years had been very kind to her and, in his eyes, the now 33 year old woman he had grown to love looked as radiant as ever. Her training, alongside his own work-out had paid off wonderfully and she was easily the most muscular woman he had ever seen.
That day, six years ago, his teenage self had realized that strong, muscular women were the sexiest thing ever. Don't get him wrong, he loved Nemuri Kayama for the intelligent, charming, supportive and considerate woman that she was, her striking blue eyes, beautifully wild mane of dark purple hair and amazonian physique were just an added, albeit a pretty amazing bonus, in his opinion.
Nemuri had also forgone a top, since this was their private gym and so Izuku could admire her gloriously muscled torso in all its glory. He eyed her muscular arms, with biceps and triceps that would put most male bodybuilders to shame. Her back and shoulders were a breathtaking canvas of ripped muscle. Beefy pecs supported her large and soft, but perky and surprisingly heavy breasts, which hid the top row of her chiseled eight-pack. While she could not rival the, frankly insane, muscle mass of his upper body, her thighs did have an edge over his. Her massive thighs bulged with every step, even if she wasn't in heels and could reach an insane degree of muscle definition when she flexed them. If he was honest, were it not for the fact that both of them were Pro Heroes and needed to work, he could stare at his amazonian girlfriend's thighs and incredible ass all day.
Seeing that Nemuri was now ready, he got behind her to act as a spotter. Although he had utmost faith in her, it was better to be safe than sorry. With a grin, he brought one of his large hands down on one of her asscheeks in a quick slap, which earned him a small gasp of surprise, followed by a sexy smirk from the purple-haired heroine.
"Let's go, you can do this."
Taking a deep breath, Nemuri gripped the barbell firmly and with a quick push upwards squatted down with 2000 lbs resting on her shoulders. Her legs were shaking from the exertion and her quads were burning, but with a roar of effort she straightened her legs and brought the weight back up. As she moved to rack the weight, she was stopped by firm hands on her waist.
"More."
That one simple word from her lover, spoken firmly, ignited a fierce fire within her. With a feral grin, she squatted down again. The burning in her thighs got more intense, the shaking worse, but she came up a second time.
"Again!"
Izuku's harsh exclamation was like a rush for her. She wanted to keep going, she needed to keep going! It felt like an almost animalistic drive to show off her power to her mate, to prove her strength to him and to herself.
Down and up the weight went for a few more repetitions and her legs felt like they were on fire, screaming at her to stop. Sweat was running down her sculpted body in rivulets, her shredded quads flexed to the max, as she was struggling to bring the weight up.
"Do it."
She screamed. White noise drowned out everything else, besides the divine sensation of her thick quads bulging and growing larger, more defined and the legs of her shorts being torn to shreds.
The second her legs were straight, the weight disappeared from her shoulders as Izuku racked it, leaving her gasping and panting, trying to catch her breath. Slowly coming back to her senses, Nemuri took the water bottle Izuku offered her and took a few greedy gulps, before dousing her damp hair and sweaty body with the rest of the bottle.
"That- that was the most terrifying, yet hottest thing you have come up with so far.", she breathed out. Green eyes met her blue ones, his proud smile met her exhausted grin.
"Hmm, I'd say the results speak for themselves.", Izuku said huskily, before pressing his lips to hers in a searing kiss. The amazonian woman melted into the kiss, letting out a pleased hum and a disappointed whine when the kiss ended all too soon.
Any further protest died in her throat, as soon as she caught sight of herself in the mirror, her boyfriend had nudged her in front of during their kiss.
"Holy fuck..."
Her ruined shorts highlighted the pale skin of her legs, which made her massive thighs stand out even more. She put a hand on one of her thighs, which were dripping with sweat and rock hard, even with the lightest flex. Relaxing her right leg and then stomping down and flexing hard, her quad muscle swelled larger than she had ever seen them. Her tree trunk sized quads were now so large that they touched each other without even trying. Turning to the side, Nemuri’s eyes wandered to her own defined calves and thicc ass.
"I'm really proud of you, Nem. You look stunning, like an amazonian warrior goddess.", Izuku told her, as he enveloped her in a hug from behind. Midnight relished in the way their sweaty, hard muscled bodies rubbed together. It was moments like these, where shared their love for each other, that made Nemuri feel well and truly happy.
Leaning back and pressing a quick kiss to his cheek, the purple haired woman answered with a blush. "Oh, hush. Flattery will get you anywhere Izuku... my beefy stud-muffin."
The tall man stood silent for a second, before a smirk appeared on his lips and soon after that he was doubling over with laughter. Midnight briefly pouted at her boyfriend's reaction, before joining in on his laughter.
After a while the laughter died down and the purple haired woman grabbed her green haired boyfriend by his bulky lats and pulled him in for another kiss, longer and more passionate this time. She felt Izuku's huge arms embrace her, his hands settling on the small of her back and humming appreciatively into the kiss. Stepping closer and pressing herself flush to him, so that her breasts squished against his front and her now rock-hard nipples ground
against his equally steely abs, they finally broke apart, gasping for air.
They smiled at each other, and Nemuri's smile got even wider, when she felt his growing bulge press into her crotch and thick thighs.
“Wow, I didn’t know that breaking your personal record would get you so riled up. We are going to have to up the ante from now on, try and break a record every session. You’ll be the strongest woman on the planet in no time!”
“Ha! You’d like that, wouldn’t you? Me, becoming even bigger and stronger?”
“Of course, I love you after all. And I’ll be with you every step of the way.”
"I love you so much, Izu. Now shut up and kiss me."