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gatitties · 1 year

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Slippery

─One Punch Man x child!fem!reader (platonic)

─Summary: a small part of the beginning of saitama's career as a hero and… you being there to annoy more than help

─Warnings: bad language for a child, typical violence in opm

so… this was going to be another of my fanfics on wattpad but I left it on hold, but I thought I would share here the little that I managed to write 👍🏻

"AHHHHH! A MONSTER!"

"Someone call a hero!"

"Evacuate the area immediately!"

You walked humming, swinging the worn wicker basket you held in your small hand, ignoring the terrified screams of the people, more focused on remembering the things you had to get to eat due to your poor memory and poor ability to pay attention to anything for more than two seconds.

"Bread, meat, milk and cookies."

You mumbled, counting on your fingers at the same time you said the food, you almost tripped over a crack in the asphalt, your attention was stolen when you saw how a small plant came out into the light from the broken cement, you shook your head concentrating on your errand.

"Bread, meat, milk…"

You frowned, putting on a sour expression at the missing ingredient, you continued muttering the now three ingredients to yourself, staring at the ground with such concentration that if you had lasers you would surely have destroyed the asphalt. So focused on remembering what you were missing while you looked down that you didn't realize you hit something hard, someone.

"Hey… aren't you lost, girl? There are monsters out there who like sweet girls like you."

You frowned, looking up to see some kind of monster with no eyes, a big toothy mouth on what seemed to be his face and he was only wearing pants, you made a disgusted face when you saw how he smiled, they always told you not to talk with strangers.

"Bread, meat…"

You began to sweat when the shadow of the monster you had ignored was projected over your smaller body, although your concern was that you had forgotten another of the ingredients again, you didn't even flinch when he lifted your arm a few minutes after you accepted that you would never remember what you had to buy again.

"Don't ignore someone when they talk to you, brat!"

"Shut up, shit, because of you I forgot the purchase."

"Huh!? You have a big mouth for a child, mmh, one of my favorites snacks…"

Your face contorted as you watched his large tongue move from side to side, starting to salivate, and you completely lost your nerve when his tongue grazed your cheek to taste you. You were going to kick him but before you could, the monster stopped, he turned away from you as if you had the plague.

"What the hell!? Bleagh- that's disgusting, you taste sour."

"Heh, die."

"What the hell are you- AAAAAHHHH-!?"

You covered your ears so as not to hear the screams of the idiot who had tried to eat you, if only he had looked closer he would have noticed your pointy ears as well as the small antennae that appeared when he caught you, antennae which you took care of hiding again. The guy's tongue started to melt as if he had licked pure acid, it wasn't really your fault, he was the one who activated your involuntary defense method.

You thought about leaving the area, since people had fled and the store you wanted to go to was just around the corner, but thinking about it again that could only mean one thing… free food! You were already struggling to get the money, either by stealing it or searching in some places where there might be money, you had been living on the streets for as long as you can remember, but it's not like you remember much of it either.

One day you simply woke up in a collapsed building, you were completely intact but covered in a slimy slime that avoided and withstood thousands of debris, how or what happened before that is a mystery to you, the only thing you know is that now you are what that people consider a monster, you don't remember being one before either, so you assumed that at some point you were human.

But you got used to it, that happened about two years ago, when you were eight years old, in that period of time you got used to wandering the streets of city Z, you found several shelters with some friendly monsters, but they always got into trouble and got caught by some hero, luckily you escaped from the social vigilantes because your appearance was still like that of a girl your age, not counting the antennae and pointed ears. For one thing, you learned to hide your antennae, and pointy ears weren't so uncommon in this world.

As for your strange viscosity, it was not a problem unless your body detected danger, if that were to happen ─like now─ your body would react immediately, covering you in that acidic and strangely hard slime when you tried to hit it, as if was a non-Newtonian fluid, you considered yourself a slippery person because of that, you always managed to escape from all the trouble you got into.

"Let's see… bread… bread and… oh! Pockys!"

Your mind completely forgetting the mental list you made once you entered the empty store, having the palate of a child, your mouth watered at the sight of all the junk food you promised you weren't going to eat, but who cares? You already forgot that promise you made with yourself.

You left a couple of hours later, taking the opportunity to eat and rest there, the night was falling when you walked with a bag of groceries, ─completely different from what you were looking for at first─ you swung your feet while humming, singing a random song in your mind until, for the second time that day you bumped into someone, this time you tripped over your feet, falling on your ass to the ground.

"Oh? What are you doing out so late? We agreed that you had a curfew." you puffed out your cheeks, hugging the shopping bag, looking away as if you were angry with the person in front of you, who turned out to be an acquaintance "Mmhh? Have you gone shopping alone? Don't tell me… have you stolen from my savings again?"

"Of course not! I have my own savings, baldy."

A vein bulged on Saitama's forehead, grabbing you by the collar of your shirt as he dragged you down the street like a scolded puppy, though your brow was furrowed by his accusation ─which could have been true another time─ you smiled inwardly.

Wandering around Z city wasn't as bad as you thought, at least not since a couple of months ago you met a man who had a bald spot brighter than your future, you became attached to him from the first day you saw him for several reasons. One, he didn't seem to care about your appearance as a monster, two, he's bald, you didn't need a justification for this reason, it was simply a plus point in your mind, three, they had a place you could stay the night.

Poor Saitama tried to get rid of you in various ways, but you seemed like a leech, clinging to him whenever you could, and deep down in his heart, he felt sorry for a child having to wander the cold streets without something to call 'home' or 'family', even though with each passing day he lost more ability to feel emotions, he was still human, and he thought that maybe some company wouldn't hurt, of course, he was grateful that you were completely independent of him most of it.

"And then I ran into a fucking ugly-as-a-bit monster-"

"Hey, hey! What did I tell you about using that language?!" Saitama choked on his ramen as he listened to you talk about what you had been doing while walking the streets, scolding you one of many times for using those types of expressions or words that someone your age shouldn't be using "Have you been watching that show again? I told you it was for older people."

"No I don't-"

Before you could continue speaking, you burped, making Saitama step back, looking at you with narrowed eyes, you clicked your tongue, pouting because you had been discovered, Saitama discovered that whenever you lie your stomach fills with gas and it usually comes out in the form of belch, there had to be something bad with being a monster.

You got up when you noticed how Saitama was stirring on his futon, looking amused at how he seemed to fight in his dreams, you decided to leave him to go back to sleep but your stomach growled, leaving sleep aside you went to the kitchen, grabbing a stool to reach the drawer where he told you that you could leave your food.

You returned to the living room to find that he had already woken up from his exciting dream, hitting the clock that went flying, shattering against the wall, voices outside the building made Saitama spring into action, jumping off the balcony looking excited as you picked up the remains of the poor watch.

"And there goes the fifth clock of the week… rest in peace."

You mumbled, closing the trash can, making a mental note to get another alarm clock at some point, if you don't forget, returning to see a Saitama completely devastated emotionally by another easily won battle, you patted him on the back to comfort him, he went to do his morning routine while you turned on the TV, hoping to find a good show.

After a while, you saw that Saitama seemed focused on watering the plants on the balcony, taking advantage of the fact that he seemed quite focused on his thoughts, you smiled maliciously, tuning into the program that you were forbidden to watch.

"What sons of bitches…"

"They've killed Kenny!"

You spent a while watching the program, even though you barely understood the jokes, or even the meaning of most of the words, but you were only doing it for educational purposes, knowledge is power and you needed to know more words to have a rigorous vocabulary, so even though you contradictorily only repeated the insults without knowing their true meaning or impact.

"Hey little bug…" you froze feeling the anger emanating from Saitama's body, you slowly turned your head with sweat running down your cheek, used to the man giving you the nickname 'little bug' because of your antennae "pass me the spray of mosquitoes, I don't know where I put it and I'm starting to get angry."

His teeth gnashed as he heard the sound of a mosquito fluttering around the living room. You ran for the spray, sighing in relief that he hadn't noticed the TV show which you quickly switched to the news, the anchor's voice covering the noise Saitama did when trying to kill the mosquito, although he was equally attentive to the television.

"Massive mosquito plague? Yeah of course."

You shrugged, you didn't care about the mosquitoes, after all you could eat them if they were too annoying, of course, unfortunately you partially lost your taste by turning into a monster, which bothered you a little but made it so you could eat any kind of thing, not only because you wouldn't feel the horrible taste, but because your gastric juices could melt anything.

You paid more attention to how there were more and more veins on Saitama's forehead when you saw that he couldn't catch the mosquito, you let out a snort of surprise when you saw how he was unable to kill the mosquito, you rolled your eyes, getting up from the couch.

"Watch and learn!" you patted the space right where that insect was, smiling proudly when you saw that the buzzing stopped, however just a second later your smile was erased "Huh?"

Once again the persistent hum echoed through the silent house, which became a battlefield to try to kill that small animal, you reached the point where you were not able to kill it either, getting on your nerves just like Saitama, so pissed off that you even went running down the street chasing it to kill it, although the only one who ran was Saitama, since you climbed on his shoulders while pointing and shouting at the fleeing mosquito.

However, while he concentrated on continuing to run after the insect, your eyes moved upwards, seeing a large black cloud, you grimaced in disgust as you heard the humming sound emanating from there.

"What is that cloud?"

The bald man stopped as he finally noticed the large black mass in the sky, your attention now directed towards what seemed to be a robot that was already there before, his expression was serious and analytical, he spoke with a bit of concern seeping into his words.

"You! hide somewhere safe, the mosquitoes are being controlled by someone, if she sees you I'm sure she will attack you."

"Oh Really…?"

Saitama sweated at the thought of the swarm, but before neither you nor he could react, the large mass of insects rushed towards the street where you were, however a great flash made you close your eyes, your body was covered in slime, although you slid off the man's shoulders because you had no hair to hold on to, ending up on the ground, admiring the robot's heroic pose, although your attention went elsewhere when you went to check if Saitama was okay, you stifled a laugh at the sight of his buttocks exposed.

"Hey, you saved me, you're great! how did you do that? Your laser is more effective against mosquitoes than the sprays I have."

The cyborg did not have time to say anything when he began to be attacked by the mosquito girl, almost destroying the poor boy until Saitama slapped the woman, killing her instantly, complaining about how the mosquitoes bothered him, leaving speechless to the blonde.

"W-Wait a minute!" you raised an eyebrow while Saitama turned his head to see what was left of the poor boy who continued talking "I'm a cyborg, I've been fighting in the name of justice! They call me Genos! Please tell me your name."

"Huh? I am Saitama why?"

"Let me be your disciple!"

"Ah… ok."

You put on a blank expression when you saw how the bald man left as if nothing had happened, stopping for a moment to see if you would follow him to return home, you sighed, shaking your head at his attitude, you knew that he had not heard anything of the cyborg's words, you already knew how was this going to end.

"Goodbye Genos, see you at home!"

You smiled at the boy, who seemed conflicted at the sight of you, his system detecting you as a monster but arguing with himself over the fact that you looked like someone harmless. He would have to look into it later, after all he wanted to eradicate evil and if you were, you couldn't be an exception.

You hid a smile as you saw how the young adult showed up at the apartment, Saitama in disbelief as he looked through the half-open door.

"Master."

"You really came… um, what's your name?"

"It's Genos, Master Saitama."

"Could you stop calling me master?"

"Teacher!"

"Don't call me that either…"

Saitama looked down at you, looking for silent help, you looked at him with a shrug, making him sigh completely exhausted, he opened the door letting the cyborg in, you smiled at his action, running towards the kitchen to grab three cups of tea, the two boys following you inside, Saitama pouring the tea into the cups while Genos analyzed his surroundings, glancing at you from time to time.

"Go home when you finish your tea, I don't want any disciples."

"Master, what kind of artificial parts do you use?"

"I don't use any."

"Huh? So what's that skin-colored armor on your head?"

You spit out the tea you were drinking, choking on laughter, coughing uncontrollably as Saitama patted your back with a blank stare.

"It's called skin…"

"But that means that you are bald even though you are young."

You spit out the drink again, choking for the second time, receiving more pats on the back a little more aggressively for Saitama's outburst at the mention of his baldness.

"So what if I'm bald?! What's your problem anyway?"

"My problem? Will you listen to me master?"

"Uh, no thanks."

Ignoring the lack of enthusiasm to hear his tortuous past, Genos gave a long sigh, beginning to tell his story, you tried to pay attention but halfway through the story your attention simply went elsewhere, ignoring his words until he was interrupted.

"You talk a lot! Summarize everything you have to say in a short sentence of about ten words maximum, you can't even get a child to pay attention to you."

Saitama pointed at you, completely oblivious to their chatter as you had grabbed some Legos to entertain yourself from Genos' boring story, the cyborg analyzed the situation, taking a few seconds with his eyes closed until he seemed to get the appropriate internal response.

"Master, summarizing this, what I want to say, please teach me how to become as strong as you."

"Genos."

"Yes, sir!"

"How old are you?"

"Nineteen, sir."

"You're young… I'm sure you'll surpass me easily."

"Really?"

"I am twenty-five but I started training at twenty-two in the summer three years ago, I have no problem teaching you… but it will be hard, are you ready for this?"

"Yes, sir!"

You blinked in confusion as you saw Genos moving quickly, crouching in the hallway of the small house as he muttered that he detected something approaching at high speed, you thought he was simply having a short circuit or something and continued building your Lego castle, unfortunately a monster shaped of mantis broke the ceiling, causing the pieces of your castle to scatter throughout the room, your antennae came to light due to your anger.

"My name is-"

You smiled as you watched Saitama destroy that monster before it could even introduce itself as some kind of villain.

"Pay my roof!"

"And rebuild my castle!"

You joined the violence by kicking the remains of the mantis corpse, angry at the intrusion that had destroyed your mood, you were prepared to spit acid at whoever had dared to destroy your work of art made of plastic pieces joined together.

"There are more of them outside."

Genos warned, they both left faster than you and when you arrived Saitama had already done all the work, kicking the butt of what seemed to be some frog and slug monsters, you sighed thinking that everything was solved, however something caught Saitama and buried him leaving only his head outside the ground.

"Ma-Master!"

"This feels weird… it's like I'm a plant growing in concrete or something."

You laughed at his comparison, ignoring the worried cyborg you pretended to water the bald man with an imaginary watering can, he smiled vaguely at you, the moment of tranquility was short-lived when a gorilla covered in armor appeared on the scene, without realizing it you were also buried on the ground when you were distracted watching the fight between Genos and the robot gorilla.

"Oh, a kitten."

You muttered carelessly as you saw how another Lion-shaped monster threatened Saitama with ripping his eyes out of their sockets, you also watched as a mole came out of the ground, probably the culprit for both of you being with your body underground. You enjoyed the strange sensation while the other two fought, almost falling asleep because of how comfortable it was, unfortunately Saitama and Genos finished off the enemies too quickly.

"Hey, can you get out of there alone? We are going to resolve some issues with a weird scientist."

"Yes, don't worry, can I go with you?"

The two looked at each other and shrugged, Genos did a quick analysis of your constants and abilities now that he could see your true form and knew that you would have no problem defending yourself, Saitama already knew that you were completely self-sufficient on your own. You took their indifference as an affirmation and covered your body in slime so you could better get out of the place where you were buried so you could go to that scientist's base.

After a brief interrogation of the robot gorilla, a few threats here and there to summarize the backstory of this whole situation, the boys got the exact location of that scientist called Doctor Genus. You climbed onto Genos' shoulders because at least you could hold on to his hair if you fell, it didn't take you long to reach that base of operations in the middle of the forest, although the cyborg destroyed the entire building as soon as he arrived.

"Dude, what are you doing so suddenly?"

"I found this most efficient way to eliminate them in one fell swoop."

"Yeah, well, but at least you could have given them the opportunity to try something…"

You nodded at Saitama's words, also because you felt like kicking someone's ass for destroying your Lego castle. You found a trapdoor in the floor that led to some underground tunnels and you entered without thinking twice. Your antennas began to move restlessly and the lights in the hallway began to go out while heavy, fast footsteps were heard getting closer. When you focused your sight, you saw a large beetle? With a guy in his hand, he was advancing towards you at full speed, although both you and Genos were pushed aside with a big slap.

"How rude, oh is this your right leg or your left?"

You whined even though your slime kept you from getting hurt, you were trying to pull the cyborg out of the wall but you accidentally ripped off his leg by pulling on it, his joints were twisted at painful angles if he were human, you put everything back together in place and you immediately went to the room where Saitama and the beetle were going to fight, but you couldn't care less, you knew what was going to happen so you decided to take a walk around the huge basement.

You didn't find anything really entertaining, at least not something that managed to hold your attention for more than a minute, except for a simple lava lamp that you found in a kind of bedroom, you stopped to look at the different experiments briefly and simply went back and hoping that they had ended the fight once and for all, you were beginning to feel tired and wanted to sleep if possible in a comfortable place.

"What the hell…?"

You muttered with a blank expression as you saw Genos' afro hair and how Saitama was being beaten, although it didn't take long for him to deliver his famous punch and destroy the monster into little pieces, while he screamed in frustration.

"Today is the special discount day!"

Of course, now you understand why the man's frustration, he couldn't miss a day of sales in the supermarkets, you didn't complain about the urgency when you left, leaving the doctor completely emotionally destroyed by the destruction of his most lethal creation, you walked towards Genos jumping with joy at coming home to take a nap, he looked at you in silence, crouching down since he knew you would ask him again if he could carry you on his shoulders. In this little time together he convinced himself that you wouldn't be a threat, despite being a monster, you had no evil in you, at least, not towards innocent people.

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