This is going to be a long, and slow Setsuna Tokage X Izuku Midoriya story. The beginning is merely an intro and premise of what I hope to achieve in slight world building. I feel there is not enough of these two paired together, though I have thoroughly enjoyed all the fanfics written on these two that are available; so much so I am going to try my hand at this pairing. Enjoy.

Start Of A New Day

Today was a special day. Ordinarily Izuku Midoriya would spend his days reading up on the latest hero news, or better yet watching the latest hero debut that was all the buzz. At the ripe age of three, he was just like any other kid his age; fantasizing over their soon to be quirk that would surely surface as they reached the prime age of four. It was a dream all kids of japan, better yet, all the world looked forward too as they reached that magical number. However, in the world of today, being quirkless was seen as something of an oddity, and those who had such a thing befall upon them were usually met with scrutiny, pity, and even treated as a rare form of subhuman that should not exist in this world. Which no matter how cruel it sounded, was not so far from the truth.

Though rare for such a condition to fall on an individual, it was not as uncommon as one would think, or in this case what Izuku had been told all his life. Heck he had a quirkless aunt all the way in the Saitama prefecture; whom at the moment Izuku and his mother Inko Midoriya were making the hour long trip to visit. Izuku always found the car ride over mesmerizing, not for the scenery of open country, or the ever ending sun shining above the mountains. If anything in such a heavily populated city filled with many buildings, businesses, and homes; one would wonder what had Izuku so entranced with such a dense populated area. No simply put it was the fact on car rides Izuku was able to see the various people living their everyday lives, especially those with mutant type quirks! He was a kid filled with such wonder as he saw so many unique individuals with various "formities" so to speak. Even the prospect of seeing a hero on one of their patrols would send him into a frenzy.

His young eyes always shown with wonder as he witnessed such unique aspects of those with mutant quirks. Earlier, they passed a family who had cat ears, as well as tails! How can a kid not be fascinated by such a thing? Izuku was a special kid that was for sure, he loved everything there was about quirks, he loved all what quirks could do and accomplish for the world. See even at such a young age Izuku would find his mind always lost in a sea of questions and wonder. So much so that Inko, the worrywort she was, wondered if it had to do with a form of 'disability', though of course that was ruled out by the doctors as they simply said, "He's a bright kid with an even brighter mind". Of course Izuku never questioned what the doctor visits could of been about, he was just trying his best to figure out what the quirks of the staff were. Although, he always did wonder why they whispered about to his mother in such hushed tones around him in the clinics. Again Izuku was lost in his mind again, he was only brought out of his daze when he felt a gentle shake from his mother on his left shoulder.

Izuku in a panic jumped and looked to the source only to see his mother outside the car, with his side of the door open, giving him such a loving and kind smile. Tilting his head slightly Izuku's little mind went into overdrive to try and piece together how his mother was standing outside the vehicle when she was just driving. Realization soon dawned upon him when he looked forward to see they were parked in the driveway of a house, his aunt's house. Blushing slightly and shaking with excitement, Izuku began to move in haste to unbutton his seatbelt as he heard his mother give off a small sigh with a chuckle following soon after.

"Ohhhh Izuku, whatever am I going to do with you?" She questioned in jest, yet with all the love a boy like him deserved.

Izuku simply blushed harder at her response in embarrassment. He reached over with his little arms to his mom so she could help him get out of the vehicle, after all he was only three years old. Soon Izuku felt himself being lifted and set gently on the ground right by the car door.

Smiling up to his mother, Izuku in a meek voice said, "T-Thanks mom." Which in turn earned him a slight ruffle of his already messy green hair. Izuku giggled at the contact and looked back up to his mother again only to see that always everloving smile that only she could give him.

"Now now Izuku, we've talked about this." Inko said in a semi-scolding manner. "Though I understand you have so many questions in that small but big brain of yours, try and be aware of where you are at least okay?"With that Inko gave a small chuckle and picked her baby boy up as she closed the car back passenger door behind her.

Izuku laughed all the same as he was lifted into the air again, into the loving and warm arms of his mother. Cuddling up to her tighter, Izuku truly felt at peace and felt safe in her arms. Izuku adored his mother, words could not even describe how much he truly loved his mom with all his heart. Though he never knew where he metaphorically 'came from', from what his mother and his father told him a bird called a stork delivered him as a baby right at their doorstep. That's right! Izuku's father was overseas working to ensure that Inko and his beautiful baby boy could live comfortably in Japan. Though Izuku only saw his father on the holidays, the late night calls once every week was always the highlight in little Izuku's mind. He loved his father just as much, and even though the absence would make him sad on certain days, he was still a three year old kid who knew his father was doing his absolute best to ensure they lived comfortably. Izuku admired his father as a hero in his own right.

The walk to his aunt's door was uneventful as it obviously would be, just being a few feet from the driveway itself. Izuku of course started shaking in excitement as his mother neared the door to alert the resident inside they had arrived. But before his mother could knock on said door, it opened abruptly in a flash, and standing in the doorway was a rather similar looking older woman to his mother. She was of average build, with a slight pudgeness to her cheeks. Standing at a mere height of 5'4, she was slightly taller than his own mother. She had such a striking resemblance to his own mother that they would tell him stories that when he was an infant, he would confuse the two almost all the time! Crying to his aunt thinking she was the one who would "feed him". Though Izuku did not understand the implication one bit, his mother and aunt sure loved to reminisce about said memories; always bringing a smile to their faces, smiles that little Izuku loved seeing upon their features that was for sure.

Again, Izuku was pulled from his thoughts when he felt a new pair of hands grab him tenderly, yet with a goal in mind. That goal was to have him smothered against said aunts cheeks followed up by the sweet coos and kisses from his aunt. He broke out in a giggle fit as he struggled in her strong grasp, he was not trying to escape that was for sure, he loved the attention he was receiving one hundred percent!

"AHHHH! Izuku you've gotten so big!" She gushed out. "I could just eat you up come here!" With this declaration she began nibbling all over little Izuku's face and hair, earning her squeals and laughter from her little nephew.

"PL-PLEASE AUNTY AIKO!" Izuku shrilled. Though his 'complaints' fell on deaf ears as Aiko continued her onslaught, and Inko looked on with a smile and chuckled all the same.

"Good to see you oneechan." Inko said while shaking her head slightly. Inko loved her older sister, though she was older by a measly two years, she sure knew how to get under her skin about it. Judging by the flash she saw briefly in Aiko's eyes during her metaphorical coddling session with her baby boy, she groaned with what was sure to come out of her mouth. And Aiko sure did not disappoint as always.

Aiko stopped her attack and looked to her younger sister with a growing mischievous smile. "Ah ah ah! It's O-NEE-SA-MA, now say it with me Inko! O-NEE-SA-MA!" Aiko stated in a matter of fact tone. This of course earned her an eye roll from her younger sister, but Aiko set Izuku on the ground and joined her sister in a strong hug.

"Good to see you too imouto-chan." Aiko said. Though the way she said it heavily implied how funny she found addressing her younger sister as such. Though with all the love and respect all the same, she was happy to see her younger sister of course.

Upon breaking their hug apart, Aiko reached down picking up Izuku into her arms. Izuku found immediate comfort in her grasp that he could not help but feel himself lulling off to sleep. Soon the background drone of his mother and aunt talking sounded so far away as he felt the world around him turning dark The two women noticed this and smiled as they went to continue their conversation in the living room. Izuku was laid on a different extension on the couch, one that easily fit his small form as he found himself lost in a world of pillows and warmth. Turning their sight away from the obvious cute bundle that was Izuku, the two women began catching up as they always did on their visits. Aiko lived alone the majority of her life; being quirkless and all she was rather used to life that usually followed being born as such. It did not mean she did not have friends however, quite the opposite actually!

Being the head costume designer and fashionista of midnights hero agency obviously played a huge part in this. She was the sole individual who played a major part in helping Nemuri change her costume when the public felt it was too indecent for 'their' standards. Aiko understood though, maybe the straps acting as pasties was not such a good idea? Though it seemed unreal to think someone who was quirkless had such a high position in a hero's life, her and Nemuri were very close friends; so much so Nemuri usually confided with Aiko when it came to certain topics. A friendship that had been built upon in the last few years, which was interesting to think since Midnight had just barely made her debut such a short while ago or so Aiko thought. Come to think of it, it was rare to see such a young hero at the age of eighteen already have an agency, and was already climbing the ranks at a rapid pace. Maybe her looks and overall quirk had something to do with it? Whatever the case Aiko was grateful to have such a young friend even though Aiko herself was up there in her age.

Aiko however found it rather hard to land herself a stable man that was for sure. She knew she was getting up in her age, though not much by any means, she felt pressured from the fact that her younger sister found herself a man, and not to mention little Izuku was already three years old! Leave it to her younger sister to make her feel old; though try and try Aiko did, it seemed almost impossible to find a man who was not in it for just the chance to have a swing at Nemuri. Nemuri fortunately found the attention behind closed doors a huge annoyance, but in public she tried her best to keep up the image that it did not bother her in the slightest.

Aiko and Inko's conversations of catching up always seemed to follow this manner. Inko would tease her about her man troubles, while Aiko would hit back with Inko's own problems that arise with having her husband overseas. The main thing revolving around how she can keep herself sane with her man not being home to 'sate' her needs, though Aiko was not one to talk for she rarely if not ever had that attention to begin with. Though both sisters loved each others company, and thoroughly enjoyed their conversations they always had no matter how silly or dull, they always found happiness and comfort in each others presence. As such they both had a tendency to talk each others ear off for hours on end, so much so that that did not notice Izuku awaken from his two hour long nap.

Izuku had awoken with a slight feeling of grogginess, but he felt himself at ease laying their enjoying the voices of his aunt and mother intermingling with each other. They always had such a sweetness that Izuku felt he could be content hearing the buzz of their voices for hours. Of course since he was an energetic kid, he felt himself in need of slight adventure. So quietly he got up from his makeshift bed, and made his way to his aunts back porch door way. Izuku always liked looking out the double glass sliding doors. Namely for the fact just a short minute away was one of his favorite parks. Turning back slightly he found both the women were still lost in each others' conversations, and aunty Aiko seemed to be on a rather funny part of her story as his mother was almost keeling over in laughter.

Izuku looked out into the open world before him, and being a child with poor decision skills felt his mother would not mind if he were to go to said park alone and ride the swings! They looked so exciting and from what his little eyes could make out, their were other parents with their kids enjoying the park together as well. So instead of asking his mother and aunt to go to the park with him he took it upon himself to head out on his own, an adventure just for him! So with stealth such a young like him should not have, and skill that his best friend Kacchan would be proud of, he delicately slid the door open and closed it all the while holding his breath. Judging by the sounds of their continued conversation, Izuku figured he was in the clear and began his trek to the park. In Japan's society today, kidnappings of young children was almost non-existent due to the hero society they all now live in. It was a rare sight one ever saw on the news that a young child was abducted, or worse, something morbid befell a child with how vigilant heroes were in today's world, especially with All Might at the forefront of it all. So the few short feet towards the park was rather easy for Izuku and his little legs; he could not help the huge smile that graced his features. Approaching the park, Izuku could her the small shrills of various children like him playing and running around the park.

Fastening his pace, Izuku made a beeline for the swings only to be approached with a problem. He was too small to get himself up on the swing without the help of an adult, and he was too frail to have the strength that would aid him in pulling himself up there alone. So while scratching his at the new predicament he was in, Izuku briefly heard what sounded like sniffling by a nearby secluded tree from the rest. "That's odd, why is that tree crying?" Izuku innocently pondered to himself. Such a curious noise; Izuku felt himself approaching the tree at a subtle pace. Upon reaching the front of this everyday tree, he inquired allowed albeit nervously, "Is a-anyone t-there?" A small but feminine squeal alerted him that his question was somewhat answered or at least heard.

Slowly, Izuku circled around the tree, his hand grazing the sides of the rough bark. Once he faced the other side, he noticed a small girl with a scraped knee. She was his age that much he was sure of, and by the tears in her eyes and slight fear as she looked up to him she was in pain. Standing tall Izuku to the best of his ability tried to act like the heroes he had seen on TV. With a stutter Izuku proclaimed, "H-Have no f-fear, I am h-here." He struck a childish pose hoping to seem like a true hero to this unknown girl before him. She owlishly blinked up at the weird boy, with tears still coming down her eyes. Noticing the tense and quiet atmosphere Izuku began to sweat.

"Hey, are y-you alright?" Izuku asked gently

The unknown girl's eyes widened at the question, then the tears broke out anew. "I f-fell trying t-to climb th-this tree…" She choked out.

Izuku jumped into action and tried to assess the injury. Crouching to her position, he noticed a very red and mared scrape that would surely scar over. As Izuku noticed the slight blood seeping from the wound he began to panic as his little mind tried to figure out how to help this girl. Izuku immediately looked around, hoping to see a frantic parent looking about for their child that would surely be looking about for her in a panic. Instead he noticed his aunty Aiko and mother frantically looking about for most likely him. Looking to the girl again, Izuku nervously stuttered out, "I'll be r-right back!" and then turned around and ran towards the direction of his mother. The girls tears returned tenfold at the thought of being left alone, and she slowly tried standing up to no avail.

To say Inko was upset when she saw her son running towards her would be vastly untrue, if anything she felt immense relief wash over her as she saw Izuku running towards her in a panic. She met him halfway and proceeded to scoop him up in her grasp. No one ever told her she was not emotional as she felt tears escaping from her eyes. Holding him strongly Inko felt a sense of calm as she finally had her baby boy in her arms again, even though it had only been roughly five minutes since they noticed his abrupt disappearance.

"Izuku! What were you possibly thinking on running off on your own?!" She scolded. She felt Izuku shake in her grasp, out of fear or something else, she did not know.

"You found him!" Aiko exclaimed as she approached, relief washing over her features as well. "Izuku, you had us worried sick! What were thinking going outside alone?" Though her words were just as harsh to the three year old, he felt guilt overwhelming him as he should of known they would of been worried. Before Izuku felt his own tears ready to flood out, he remembered why exactly he even ran towards them in the first place.

"Mo-Mom!" He finally said. "Come quick! There is a little g-girl who hurt her k-knee by that t-tree!" He pointed towards the tree in a rush and tried making a break from her arms.

"Whoa now! Izuku calm down. What do you mean?" Inko inquired. Though that question went unanswered as she felt her son shake out of her grasp and make a break for the tree in question.

"Ju-Just hurry follow m-me!" He stuttered out. Somewhere in his small three year old mind, he knew running from his mom, when he knew he was in trouble, was probably not the best idea in the long run; but he felt the urge to help this mysterious injured girl.

"I-Izuku!" His mother shouted in alarm, her and Aiko then proceeded to rush after the crazy boy, Inko in a panic, while Aiko followed along in wonder at what the boy said earlier. "I wonder what he was talking about?" She thought to herself. "Well hopefully Inko doesn't think he just off and ran away." She chuckled slightly to herself. That boy was always worrying her sister that was for sure, from the conversation from earlier he was still the same adventurous boy who would always run amuk with his child-hood friend Bakugo, or as he affectionately called him Kacchan. Always playing their silly 'hero agency game' or 'villian capture' whenever the two children were together; Bakugo would be the hero and Izuku the sidekick from what Inko always told her, but as of late Izuku had been challenging Bakugo for the position. "Good for him." She humored to herself.

Getting back to the chase at hand, Izuku rounded the tree and the two women heard him hurriedly talking to whoever was the mysterious person was.

"Don't worry, my m-mom and aunty are h-here!" He nervously stuttered out. As they rounded the tree themselves, they noticed a little girl leaning against the tree in tears, and was holding her left knee.. Quickly the two entered what one would call 'mom mode', and went on their knees to make sure the girl was alright.

"Oh sweetie, are you alright?" Inko cooed slightly

"Are your parents around?" Aiko followed with being the more rational of the two.

The girl cowered in fear at the two new adults that had come out of nowhere. One second the boy had returned, and the next thing she knew two women were in her face trying to find if there was any other damage to the girl. In a panic the girl starting cowering away from the two, and looked to the both of them in wide fearful eyes.

Inko and Aiko noticed this and slowly realized what they were doing. They backed up a bit and Inko reached a hand over gently in a calming manner. "Its okay sweetie...we are here to help you don't worry." Inko said calmly, like she was talking to an injured animal, yet obviously this was a child. It did work however as the girl looked to them with shaky eyes, but she made a reach for her hand with hesitation.

Aiko slowly stood up and tried looking around for the little girls parents, hoping to find someone who looked like they were frantically searching for something. This seemed to work as she noticed a couple looking about in a panic, searching behind other trees nearby, as well as peaking through the playground equipment looking what she could only assume to be their child. Aiko turned towards Inko and said, "Hey sis, I see a couple over their looking for something." Then she looked to the little girl who had now at this point taken Inko's hand. "Or someone." With this Aiko approached the couple who seemed to be stuttering to each other and sweating profusely as they continued their search.

"*Ahem* Uhhh excuse me?"

Following the sound of an unknown voice the couple looked over to see a rather short woman with green hair looking at them curiously. Before they could wonder what this woman wanted from the two of them, behind said woman they noticed a little boy trailing besides another slightly similar looking woman. What made the two gasp however was when they saw their daughter being carried in the woman's arms. Quickly, the couple, obviously her parents, ran right past Aiko ignoring whatever she had to say. They approached the three relief washing over them as they neared, however that ended when they heard their daughter sobbing slightly as he held her left leg up at a weird angle.

"Setsuna!" The mysterious woman shouted out as they neared. Upon hearing her name called the little girl looked over to see her parents approaching.

"M-Momma! P-Papa!" She chokingly gasped. This followed up with her outstretching her arms towards the two.

"So these are her parents, well that just makes everything easier." Inko let out a sigh of relief. Izuku on the other hand looked up curiously at what was happening before him watching these new turn of events play out.

Gently and with care, Inko relieved the girl from her arms to the mother. Who immediately began kissing her as the father looked her over for any injuries. It was at this point the father noticed a rather crude looking scrape against her small knee that broke his heart.

"Setsuna, what happened?" He said gently, yet in a panic. "Your knee! Are you still bleeding?" With trepidation, the man began gently patting around her knee with his shirt hoping to quell some of the blood.

The little girl winced at the contact of her wound, but she began to explain the best a three year could. "I was c-climbing that t-tree over there, I saw a c-cool looking l-lizard and thought I c-could grab i-it…" She trailed off. Both the parents sighed and firmly but gently began scolding the girl.

"Setsuna your mother and I have talked about this." He shook his head slightly, all the while patting her head gently.

"See Setsuna you need to be more careful okay? If it wasn't for these nice people who knows when we would have found you!" Her mother continued. Speaking of said people, the couple looked over to two women and child, smiling towards them.

"Thank you so much for finding her." Said the father with his smile never fading.

Inko gave a nervous chuckle and pointed down towards her son who at this point was lost in his thoughts that was for sure. Giving him a slight nudge, he awoke from his daze to see the family of three staring at him, which made him feel nervous.

"Actually my son was the one who found her, he came and alerted us about it." Inko said with a chuckle. Aiko gave a hearty laugh at the, noticing the discomfort in his demeanor at the praise.

The couple smiled even brighter, showing off a peculiar set of sharp canines that did not go unnoticed by the three. The woman was the first to speak, "Oh her little hero!" She cooed aloud. The dad following along with a hearty laugh of his own.

Izuku blushed at the idea, but felt his chest swelling with pride. He really did help someone today, or so his little mind told him. He was a hero; and Izuku liked the feeling he was feeling in his small chest.

"Now Setsuna what do you say to your little hero ehhh?" The father teased. Setsuna blushed and looked away from the boy. With some words of encouragement from her mother she turned towards the three, namely staring straight at Izuku.

"T-Thanks for saving m-me." She meekly put out.

Izuku blushed hard at the praise and stood tall with pride. "O-Of Course! I-It's what h-heroes do!" Though he stuttered it out, Setsuna had stars in her eyes. She wondered herself if she would ever get to be a hero like he was?

"Oh I'm so sorry where are our manners! What are your names?" The mother inquired.

Aiko took the initiative, saying, "Oh no worries. I am Aiko Midoriya, this is my sister Inko Midoriya." She paused and picked up Izuku into her arms. "And this little cinnamon roll of love is her son, or better yet my nephew Izuku Midoriya." She added while squishing their cheeks together.

The parents gave a slight bow towards the three and continued along with their own introductions.

"Thank you three again from the bottom of our hearts!" Said the mother. "I am Asako Tokage, and this is my lovely husband Fujio Tokage." Asako then turned her attention to the little girl in her arms. "And as you probably figured out this is our daughter Setsuna Tokage."

The two women bowed back in turn in greetings as well. The four adults exchanged minor pleasantries as Izuku stared up at Setsuna, and Setsuna was doing the same surprisingly. It was just then that Izuku started taking notice of some of her features, her hair was just as green as his, her eyes though held a pool of black that his little mind felt mesmerized by. Her bottom eyelashes protruded a bit more out, adding a small flare to the bottom of her eyes. What really caught him in awe was how when she offered back a shy smile herself, he noticed her teeth were just as sharp as her parents. Izuku himself offered a smile in return as he felt his cheeks heat up at the smile, something about those teeth seemed to drag him in curiosity.

She too was examining him, noticing his hair was green like hers, and he had a set of four freckles on each cheek. Though what she found truly interesting were his vibrant green eyes that stared back at her just as tensely. She felt herself smiling at the boy, only to get one in return; which she noticed how his teeth were not sharp like hers, how peculiar.

Both were broken out of their stupors when she felt her mother turn around along with her father, as they started walking in the opposite direction. Izuku too noticed this and looked up to his mother who was giving him a smile and a shake of her head.

"Oh Izuku what am I going to do with you? Please don't run off like that again okay sweetie?" She said while picking him up.

"Sorry mom.." He said guilty, looking down. While his mother chuckled and they too turned away from the retreating family, Izuku could not help but look over to them. He noticed Setsuna was doing the same thing and their eyes met for a second time. Izuku gave her a gentle smile, and waved his small little hand in farewell. Setsuna give a toothy grin back in return, and waved back slowly as well.

"Ohhhh Zuku~." Aiko cooed again, with a hint of teasing in her voice. "I saw the way you two cuties looked at each other! Oh dear sister, Inko how they grow so fast!" Aiko said whilst putting the top of her hand to her head.

Izuku did not know the implications on what his aunty was insinuating, for he was too young to understand the concept of love, or in this case even a crush for that matter. However, he could not help but think about Setsuna, and how he felt their time together was cut very short. He wondered to himself, "I wonder if we will meet again?".

I hope those who read this enjoyed, and from this point on the story will pick up slightly, though it is not going to go as you would normally think in a romance story that is for sure. I plan to keep it slow and let the flames simmer and burn for a long while. Thanks for reading the first chapter, and I hope you enjoyed. Have a wonderful day.