A.N.: This was co-written with Smut in the Sun.
Disclaimer: I do not own One-Punch Man.
Warning: Lemon! Rape!

Stocking Stuffer

B City

Snowflakes fell from a gray sky. It was Christmas time and many of the people of B City were busy preparing for the holidays. Children were ice skating and snow ball fighting. Many people were buying gifts and making memories to enjoy the season.

Unfortunately for the people of B City, monsters didn't take a Christmas vacation.

Near a coal mine at the edge of the city, the roar of a monster could be heard. Men screamed as they scrambled to avoid being stomped by the towering beast as it rampaged at the work sight.

A shipping container was flattened like a pancake by the black, rocky foot that stomped it into a warped husk. The fleeing workers all cowered in terror when they saw its shadowy haze loom over them, steaming red eyes staring down at them with utter contempt.

The humanoid figure's chest began to glow a bright red, the color traveling over his neck and as he opened his mouth. "You worthless, lazy worms! Without this job, all of you would be sleeping in gutters!" The monster's body glowed as rage consumed its every atom. The heat raced through him until his words became literal fire. "You think you can strike in my company?!"

Spotting several workers climbing into a truck to try and speed away, the monster grabbed the hunk of metal it stepped on and flung it towards the men. The points where he touched the metal now turned into molten slag. In just moments before his shot landed on the run aways, the metal curved around, coming back at him like a boomerang. Reaching for it and letting it melt in his grip, he roared in anger. How did that happen?

"So what are you supposed to be?"

Turning around, the angry monster saw a small figure floating in the air. Its steaming red eyes widened in surprise when he recognized just who'd showed up. "You! You're-"

"Freezing," said Tatsumaki as she floated in front of the monster's face. The number two S-Class hero was quite a sight in the midst of the falling snow. The small greenette wore a red coat and hat that had been a gift from her younger sister, Fubuki, during last year's Christmas along with a pair of matching red boots. While Tatsumaki wasn't a fan of hats, she did promise her sister that she'd wear it at least once. Unfortunately for the Esper, up in the air the coat didn't do much to block the frigid wind. "But at least you make a decent maxi heater. Who're you supposed to be anyway? You mind dying so I can go back to my blanket and hot chocolate?"

"Don't you dare belittle me, you worthless runt! You're just as lazy and incompetent as these worms." The monster sneered at the fleeing men before trying to swat her with its hand. Sadly for the lumbering beast, trying to hit Tatsumaki in midair was like trying to hit a fly with a sledgehammer and the heroine easily dodged the strike.

"They came and tried to make me sign a stupid contract! The hell do they think they are?! They have no power! I own this mine, I own their gear, I own them! Their pay is whatever I say it is and either they make do or I replace them!"

"Ohhhh, that's right. I think I know you. You're that idiot mining mogul getting sued for…what was it again? Three separate cave-ins that heroes needed to fix up?"

"I'm not at fault for employee ignorance!" He refused to stop swatting uselessly at the air, not coming within a country mile of Tatsumaki.

"Oh wait, it was four."

Clenching its fist, the monster glared steaming daggers at Tatsumaki. "I'm the Coal Baron! And I will not be disrespected by you beggars!" He roared, a tsunami of fire spewing from his mouth, attacking everywhere that the esper could possibly fly to to escape his grasp.

"Yeah. Whatever, Scrooge." Raising a hand, the Esper glowed emerald green as she worked her powers. The Coal Baron, a behemoth made of living coal, didn't stop spewing his hateful fire even as he saw it spill upwards, even going so far as to wrap around from behind him and engulf his legs.

"Wait, what are you doing?!"

"Ending this and getting back to my cocoa." Squeezing her hand shut, the hero shrunk the bubble she'd wrapped around the monster.

"Argghhhh! Damn you! I will not be stopped by a plebian like you!" roared the Coal Baron as his body started to be compressed. "This won't…stop…me!" Despite his strong words, the monster could do nothing as his rocky body was squeezed, each strike at the psychic barrier doing nothing to save him. His fires endlessly spewing from his mouth as he cursed Tatsumaki with every breathe he had remaining. By the end of it, she didn't even see his body anymore, just the fires that raged in his place.

When the ball had gotten nearly ten times smaller than the monster was, Tatsumaki simply let go of her barrier and let the burning corpse fall to the floor.

Wanting to get back home as soon as possible, the Number Two Hero considered just leaving now that the threat was dealt with, but she already got an earful for not helping save civilians a few times and didn't want to deal with that another time before this year was over.

Floating back down to the ground, Tatsumaki called around to no replies. It seemed like everyone had been able to run while he was busy being infuriated by her. So it seemed that all's well that ends well.

Tatsumaki acted on instinct alone as she felt something, erecting a barrier of psychic energy in a fraction of a second, and in the next moment, the shield shattered and whatever she noticed was knocked off course by a few degrees and knocked her hat off. It landed on the ground with a new hole bored cleanly through it.

Coming out of the smoldering crater that should have housed the monster's remains, a crystalline hand clawed forth. His body sheening and reflective in the low light. It seemed that compressing and heating this lump of coal had only made it stronger. A man made of diamond glared at Tatsumaki.

Flicking his finger, Tatsumaki knew exactly what to do as she evaded the shot, the air pressure smashing through the hill behind her and leaving a perfectly smooth hole.

"You gnat. I'm going to finally deal with you, then I'm going to make every one of those entitled beggars come back and do their damn jobs!" While he still spewed as much hate as before, this time no flames followed his voice.

"Go ahead and try. I'll deal with you and get back before those cheesy movies finish playing for the night." Tatsumaki was partial to the ones where a businesswoman goes out to the country and meets a rancher or whatever.

Feeling more powerful than ever before, the Diamond Baron swung his arm wide, sending another blast of pressurized air at Tatsumaki. The greenette flew upwards to avoid the strike and held up another hand. Once again, the monster's body glowed green again but when she clenched her fist, Tatsumaki's eyes widened in surprise when his body refused to budge. No matter how hard she tried, the monster was now too heavy to move. By crushing his body into pure diamond, the Esper had unwittingly turned him from a Demon Threat level monster into a Dragon Threat.

Now with the advantage, the Diamond Baron smirked before holding up his hand, curling his fingers. "Time to make you grovel at my feet where you belong."

This time when he flicked his fingers to send pressurized blasts at her, Tatsumaki knew she couldn't dodge in time. Her shield was brought up once more but it was quickly pulverized by the strikes. Doing her best to maintain some protection, Tatsumaki let out a deep breath when each hit finally came to an end. Not feeling even the slightest bit of pain, Tatsumaki smirked down at him. "Nice going, Scrooge!"

"Oh, I think I did a good job from where I'm standing," said Diamond Baron with a smirk. "No bra, eh? Then again with a chest as flat as yours, who needs one?"

Eyes widening in horror, the Esper looked down and gasped in shock. While the monster's strike didn't injure her, her red coat had been completely blasted off her body, leaving her standing there in her boots, her candy cane stockings and her red g-string. "The hell?! That coat was a gift!"

While the hero tried to cover herself with her small hands, the Diamond Baron took advantage of the moment by leaping out towards her. Tatsumaki's instinctual burst of psychic energy failed to stop his charge and he grabbed her arms and began to fall back down until the hero slammed into the side of the mine's entrance. Luckily, they fell against the hill housing his operations and Tatsumaki wasn't ground against the floor beneath the weight of the diamond man. Unluckily, his hands were wrapped around her arms still, and no matter what she tried, his body wouldn't budge.

Moving his hands, the monster pulled her arms above her head and gripped both of them in one hand. Simply burying his fingers into the stone to lock the Esper's arms and give him full access.

"Perhaps you can do something else besides grovel at my feet," smirked the monster as he stared down at the heroine. Despite her small size and bratty attitude, the Diamond Baron was human enough to find her quite fetching.

With all the coal dust, smoke and fire, Tatsumaki had not noticed until now that the monster still retained all of his human parts, including his family jewels. Looking down, the Esper stared with horrified eyes at the diamond cock the monster was now sporting and feeling it press against her stomach. "What the fuck?! What do you think you're doing?" She asked, but she knew full well what he had in mind when his hand started to slide up her thigh.

"Whatever I want." Tatsumaki sneered at the man who was likely a monster long before he ever transformed. Pulling her underwear to the side as he pressed his huge cock against her lips. His diamond body no longer generated heat and had grown colder from the snowy weather, and as he thrust his way inside her, Tatsumaki felt his cold cock dig its way inside her.

Gritting her teeth and biting back a moan from the pleasure forcing its way through her body, Tatsumaki struggled in vain. Her powers were useless, she doubted even Darkshine could move this creep. Being as helpless to stop him just like he was to stop her when this whole thing began.

"What's wrong? After running your mouth, now you've got nothing to say?" He taunted his victim, his free hand going down her body and his frigid touch sending chills down her spine as he toyed with her tits. Pressing his diamond digits against her cute pink peaks and looking down at the S-Class in his grasp as she squirmed and fruitlessly attempted escape.

Enjoying the build up, the Baron chose to get serious. His thrusts picking up their pace and power. Filling the heroine with more and more of his monster meat, her legs kicking at him and simply sliding off and her hips starting to feel like jello as the hill shook and trembled from his motions. Rocks and dirt sliding down as an earthquake's worth of power started to be released.

Pulling his fingers out of the mountain and hands off her arm, the Baron sunk his hands into the candy cane stockings and buried himself deeper inside the esper's honeypot. Tatsumaki used her newfound freedom to beat the man's face in with her bare hands, only to stop after the first punch when she felt like she nearly broke her own hand. With his tight grasp on her body and unable to fight back, the S-Class had no way of escaping.

The Diamond Baron mercilessly fucked the greenette deeper into the hill, literally making it crater around her body as he forced her to receive a mind numbing jolt of pleasure each time his earthquake cock burrowed into her. Tatsumaki's face twisted as the heavy head of the monster's diamond dick rammed into the door to her womb, her toes curling as her unwanted climax neared.

Wanting to humiliate the hero further, the Diamond Baron quickened his pace until he felt a hot pressure well up inside of him. "Take what you deserve, slut!" he grunted before finally climaxing, hot cum pumping into Tatsumaki's cunt.

Feeling her womanhood become filled with monster cum, the vulnerable hero groaned while trying to stave off her own orgasm but failed. "Nghhhhh!" Her eyes rolled into the back of her head and her body shook as it yielded to the Baron, her walls tightening around his indestructible shaft before gushing all over him.

Burying his cock inside her as he let the woman try to milk every drop he had, the Baron carving into his memory the look of disgusted rapture etched across the psychic brat's face. Not letting up on his assault, he moved one hand from Tatsumaki's thigh to her ankle. Turning so the short psychic wasn't pressed against anything and was free in the air and his back was against the hill, he put the girl's flexibility to the test as he pulled Tatsumaki's ankle to be beside his head as she was forced into the splits on his 10,000 carat cock.

"W-What the fuck do you think you're doing?! Stop!" Tatsumaki cried out as he started to thrust into her sensitive cunt again. Not giving her a moment's rest between orgasms, the Diamond Baron didn't listen to her dawdling as other hand gripped onto her hips and started to lift her up and down while thrusting inside of her. The Number Two hero was now his own personal toy.

The empty mining camp started to become destroyed once again, only this time it wasn't from the Diamond Baron. Succumbing to orgasm again and again, Tatsumaki's psychic powers started to go out of control, equipment and trailers being flung about as she became nothing more than a monster's bitch.

Through the cold, winter air came the melodious sound of Tatsumaki's screams and wails of ecstasy. The Diamond Baron grinned as he continued fucking her, forcing her to climax again and again. Feeling her orgasms growing stronger, Tatsumaki swiftly lost her mind to the pleasure and her mouth hung open to spew a never ending stream of moans.

With his free hand, the diamond monster gave the woman's supple ass a light smack. Yet with his insane strength, the slight tap on her ass sent shockwaves throughout Tatsumaki's small body, making her throw her head back against him and climax harder. And he didn't stop at just one, leaving her ass redder than Rudolph's nose, Tatsumaki was forced to endure all this pleasure over and over again without a moment to rest.

The little Mrs. Claus was keeping herself so dutifully tight around his cock that Scrooge felt his second climax bubbling to the surface. Feeling those tight, wet walls grip him in another vice that refused to let go, the sparkling monster let out a cry of triumph as he painted Tatsumaki's womanly walls white with his cum, claiming her once more.

With Tatsumaki left a drooling mess with tears streaming down her fucked stupid face, the Diamond Baron let go of her lurid body for the first time and saw as she just stayed there. Her body stayed perfectly still as she was being held aloft solely by the cock buried inside of her. And she stopped trying to pull away or fight back, the plebian finally accepting the position that she belonged in.

Still though, while she understood it, the Baron wasn't done enjoying himself. Spinning the girl around to a carol of her moans, he had her back pressed against his chest as his cock was buried as deep as it could fit inside her, bulging against her taut stomach. Resting a hand on each of her plump thighs, he pulled them up higher and higher until her candy cane stockings were directly beside her head.

Drilling into her cunt seemed like the perfect holiday pastime as the Diamond Baron did it again and again, never once getting tired of the feeling of how her walls wrapped around him. The destruction Tatsumaki had unintentionally caused only grew in calamity as well, going from random objects being crushed or flung with no rhyme or reason to the entire camp being sucked up into a tornado of psychic energy.

Entirely unaffected by the raw power his sex toy was throwing around them, the Baron only made it stronger as he made Tatsumaki see the christmas angels sing with every peak he made her experience.

Tatsumaki glowed green as her powers continued to run rampant, her psychic force stretching out in all directions. While the Diamond Baron was perfectly unscathed by the Esper's power, the ground beneath them started to break, the pair cracking the earth with each mind-melting orgasm that she was forced through and the Baron's earthquake inducing thrusts. All the while the monster continue to fuck the hero with a gleeful smile on his face, happy to break the uppity hero.

The Diamond Baron's grip on her thighs grew tighter as his own climax neared, leaving bruises underneath her stockings. "You were so smug when you showed up but now you know who's your master, don't you?"

"Ahh! Ahhhhh! Ohhhhh!"

"I thought so."

Thrusting up into her climaxing cunt, the earthen monster eagerly continued to break the Esper until finally that familiar pressure inside of him made itself known. "Here it comes!" he grunted into her ear, although Tatsumaki was too broken to notice. "Naughty brats get what's coming!"

His tip pushing all the way into the most precious part of her, the Diamond Baron roared before filling up Tatsumaki's pussy one more time. This time, as he filled the hero's pussy to its very limit, the greenette looked down and watched his cum leak out of her stuffed pussy. When the monster pulled out, it spilled from her gaping cunt and pooled at his feet before it quickly slipped through the growing cracks in the floor.

Dropping the heroine onto the dirt like Santa drops his sack, the monster took a breath of satisfaction, eyes drifting down to Tatsumaki now with her face against the dirt and her ass raised up in the air. While he felt more than satisfied now, he could give the teasing brat another round.

Hearing the rumble of the earth, he looked down and saw a divet had been made around him from extreme pressure. Paying closer attention, he saw that Tatsumaki was pointing one of her fingers down towards him.

"After this last while, you still think you can do anything against me? You're more dimwitted than I gave you credit for," he took one step forward and marched closer before she redoubled her efforts and the small indent became a deep hole. Yet the Baron was still unharmed. "Throwing a temper tantrum is only going to end badly for you."

This time it was Tatsumaki's turn to ignore his barbs, focusing her power to bury him deeper and deeper. She didn't think leaving him in a big pit would do anything; no, she had something much more cathartic in mind.

By the time he realized what the Esper was doing, it was already too late for the Diamond Baron. As he clawed and scratched to try and work his way back up, the walls couldn't hold from his weight and the pressure of Tatsumaki's assault. The man was sent deeper and deeper with each passing second. If he hadn't lost his sense of temperature, he'd have felt the cold giving way to a heat that grew more sweltering by the second. The walls grew more and more unstable, almost liquid. And that's when it finally clicked.

The wall at the side gave way as a plume of volcanic gas escaped and magma churned forth. He was being sent down to burn. As the lava came forth and overwhelmed him, he understood that diamonds were made with carbon under pressure and heat, but if you turn the heat too high or for too long, then they'd just turn to scrap. His voice couldn't be heard at the top of the miles long pit, but Tatsumaki made sure to pull it back close as he was left to melt to pieces.

Tatsumaki lay on the ground for a long minute, feeling the earth settle with a satisfied smile on her face. Moving her panties back into place, the Esper mustered what psychic strength she had left and floated out of the crater, rubbing her freezing arms. "Fuck," she groaned while floating away. "My hips feel like they've been pulverized." Indeed, her lower half was rife with bruises and her ass felt like it'd been pounded to hell and back. "It's going to take me a week before I can even walk or sit down." Sighing, the cold hero noticed a discarded jacket lying on the ground and summoned it to her to try to give her some extra warmth.

"Well, looks like I'm going to miss the Hero Association Christmas Party. Fubuki always whines about me not going to more social parties. Eh, bah humbug" she waved off before heading home…

The End

A.N.: Merry Christmas and Happy Holidays!