Disclaimer: I don't own any of the character's in this story.

WARNING: THIS IS A YAOI (BOYXBOY/GAY) FANFIC. This is also an alpha/beta/omega fic with male pregnancy, if you don't like either of these topics, then please don't read/or write hateful comments.

This story contains foul language, gore and smut.

Pairings: Gon Freecs/Killua Zoldyck, Bakugo Katsuki/Midoriya Izuku/Kirishima Eijirou/Todoroki Shoto, Kaminari Denki/ Shinso Hitoshi, Uraraka Ochaco/Tenya Iida

A Favour

Inko hummed a soft tune to herself as she cleaned, the house quiet. This was okay, it was alright. The house was quiet; and she was alone, and she would continue to be so for, well, probably forever.

She was married, up until a few months ago, when she found out that she was unable to bear any children; her husband despaired, and their marriage fell apart as a result.

Inko had eventually made peace with the fact that she would not only never have children, but that she would be alone, too. She still had her family, though she couldn't create one of her own, this was enough. It had to be.

The beta woman stopped humming at the sound of knocking on her door. Smiling, she walked to the door, curious to see who her unexpected visitor might be.

"Aunt Inko!" A cheery voice greeted her the moment she opened the door, a wide, bright smile, nearly blinding, stretching across the lips of a very familiar person, though he had grown up quite a bit since she last saw him.

He looked so similar to her brother, yet, at the very same time, he did not. He was tall; and muscular, the scent of a powerful alpha clung to him like a second skin, yet, he had kind, golden brown eyes, a bright smile, and he still had his black-green hair styled up into spikes.

He stepped forward, and she excepted the hug, feeling as though she might get lost in his arms with how large he had gotten since she last saw him. He was fifteen, if she remembers correctly, when she last laid her eyes upon her nephew.

She could see the difference in his face now, too, when she managed to get a good look at him, taking him by his arms, and putting an arms length between them. "It's been too long, let me get a good look at you,"

His face had lost any residual baby fat, his jaw seemed to have gotten stronger, or sharper, eyes keen. Yet, his smile remained the same, as well as his scent. Wait, no, that did change.

He's about twenty, twenty one years old now, just the right age to take a mate. If his scent told her anything, it would seem the young alpha had gotten himself a lovely young omega, judging by the unknown scent that clung to her nephew.

"You've grown so much," she spoke, lips tugging into a knowing smile.

His tan cheeks darkened slightly with a light blush, raising his right hand to rub at the back of his neck.

He chuckled awkwardly. "Yeah, I guess you could say that,"

Smiling, Inko moved to the side; opening her door wider, she gestured into her home. "Well, come on in, you must be exhausted from your trip,"

He smiled a small smile, lowering his hand again. "I hope it's okay, but I brought someone with me,"

Inko raised her brows, before nodding and smiling kindly. "Is it a special friend?" She asked slyly as he started to walk into the house.

She chuckled as he sputtered, stumbling a bit, cheeks darkening.

He passed her, and then turned back to the door, a soft smile on his lips. Turning her eyes back to the door, Inko had the pleasure of laying her eyes on possibly one of the most beautiful omega she had ever seen.

The male was of average height, slightly muscular, lean, with skin as pale as moonlight, fluffy hair as white as freshly fallen snow and eyes the most beautiful shade of silvery-blue she had ever seen.

"Oh, wow," she uttered softly in awe.

"Uhm, hello, it's nice to meet you," the omega greeted, almost timidly, pale cheeks tinting red as he turned his head slightly to the side, probably to hide his own embarrassment.

"Is this your mate?" Inko questioned, briefly turning to glance at her nephew again, before turning back to the omega.

"Sure is! Beautiful, right?" The alpha stated, smiling proudly at his omega.

"Gorgeous," Inko replied.

The omega's blush intensified, lips tugging into a small pout as he muttered softly to himself; though they could still hear what he said.

"This is embarrassing,"

Inko laughed gently in reply as she gestured him into her home, smiling kindly as he hesitated.

"C'mere." Her nephew smiled as he beckoned the other forward.

The omega slowly started walking forward, haltingly, as if something was tugging at his clothes. Something was indeed. From behind the omega, a small child peeked their head out, fluffy, black-green hair ruffling at the movement, large, green eyes connecting with Inko's before the child ducked back behind their mother's legs.

"You have a child?" Inko asked in confusion as she watched the omega gently pick up the child, and enter her home.

"We do, he's about two years, four months old now," her nephew informed as she closed the door.

"This is quite the surprise, I never would have imagined you'd make your own family, you're still so young," she stated as she started leading them through her home toward the living room.

"Well, some things happened, and well, I guess I grew up and I, well we, wanted to start early with our family," he explained as they followed.

"Some things happened?" She questioned as she gestured for them to sit on the sofa. "Whatever it was, it must have been quite something if it caused you to grow up so quickly,"

Her nephew tried to hide his cringe, but he never was one that was good at hiding his feeling.

"Understatement of the century," the omega voiced as he sat beside her nephew, placing the child on his lap.

Her nephew whined a little at the tone his mate had used, pouting at the small glare he received from him.

Inko couldn't help but laugh at the exchange. "Well, whatever it was, it had some lovely end results," she said as she smiled cheerfully at the small boy sitting on his mother's lap.

The child smiled back shyly, cheeks darkening a little with a blush as he quickly jerked his head to the side, burying his face in the omega's neck.

The omega smiled lovingly down at his child, eyes bright with love and an underlying sadness. "It did,"

"Now, why don't you tell me about why you're here to visit?" She asked kindly.

The two mates shared a look, seemingly communicating with their eyes. When they turned back to her, her nephews eyes had hardened, while his mate's had grown far sadder.

"Aunt Inko, we have to ask a big favour,"

--

"Izuku, sweetie, I'm so proud of you!" Inko exclaimed, rivers of tears rolling down her cheeks as her son stood before her, cheeks darkened with a blush as he rubbed the back of his head with one hand, the other clutching his graduation cap.

"Thanks, mom, I couldn't have done it without you," he voiced, smiling brightly at her.

His words only caused her to cry harder, both of her hands clutching her purse in front of her stomach.

"To think, my son, eighteen and graduated from one of the top schools in the country, and on his way to becoming the number one hero! I just, I can't-!" Inko cut herself off with a sob as she started bawling.

"Ah! Mom! Please, don't cry!" Izuku called in alarm, hands reaching out to her, but stopped midway, unsure.

"I'm proud of you, Shoto."

Izuku looked to the side to watch as Endeavor placed a hand gently on Shoto's shoulder, who was glancing at the ground.

"Thanks, dad," Shoto mumbled, excepting his hair being ruffled by his older brother, Natsuo, and his sister pulling him into a tight hug.

Smiling, Izuku turned back to his mom, and pulled her into a loving hug.

"I mean it, mom," he mumbled into her shoulder as she sniffled, her tears having stopped, for the moment. "I wouldn't have been able to do it without all of your support, and encouragement. Thank you,"

"Oh, Izuku, you'll make your mother cry," she stated as she pulled back, wiping her tears away, fighting back even more tears at her own words, the image of a beautiful, white haired omega flashing in her mind, and she just knew, he would have been so proud of Izuku.

"Mom?" Izuku asked, sounding a little unsure and worried.

"Hhmm? Oh, it's nothing to worry about, I'm just being silly." She brushed off his worried eyes and steadying hands as she wiped away the few tears that managed to slip.

"Are you sure?" Izuku asked.

"Yes, of course!" Inko insisted, one hand clutching her purse to her chest, the other held in front of her, waving frantically. "Now! I know you must be really excited to go celebrate with your friends! Look, they're waiting for you,"

Izuku looked back, seeing that, in fact, most of his classmates were clustered together, talking and laughing. Kirishima grinned and waved enthusiastically at him once their eyes connected. Izuku waved back, noting that Bakugo had yet to join them.

Izuku turned back to his mother, catching a sad look on her face before she smiled brightly at him. "Now I know that you're going to celebrate, but don't get too wild, okay? And be safe; also, just have fun, okay, sweetie?"

Izuku nodded, smiling. "I promise I will, mom!" He moved forward, planting a kiss on her cheek, before turning back around. "Bye mom, get back home safely!" He called over his shoulder.

"Izuku!" Inko called before he could get too far away. Hesitating, she frowned a little as he looked at her expectantly. "...When you get home, there's something important I need to tell you,"

Izuku frowned at this, noting his mother's serious expression. "You want me to stay home instead and we can talk now?" He suggested.

Inko shook her head, and smiled. "There's no need. Go out and have fun, okay?"

Izuku hesitated once more before he nodded and smiled again, waving, he turned to leave once more.

"Bye, Izuku, I love you!" Inko called after him.

"Love you, too, mom, bye!" Izuku exclaimed over his shoulder before he was out of earshot.

Inko stood, a pit of sadness settling in her stomach as she watched him interact with his friends. She needed this time he was away, to mentally prepare, in order to tell Izuku the truth.

"Midoriya!" Kirishima called as Izuku jogged the rest of the way to his friends.

"Eijirou, I told you, you can call me by my first name," Izuku insisted, a small whine leaving his throat.

Eijirou chuckled, rubbing the back of his head sheepishly. "Sorry, man, old habits die hard," he stated.

"It's alright, but, where's Kacchan?" Izuku glanced around.

"He's still with his family," Shoto's voice cut in suddenly, openly pointing at Katsuki, who was just barely enduring hugs, kisses and hair ruffles from his mother and father.

Izuku sweat dropped as he chuckled, watching as his friend neared his limit.

"Katsuki, you brat, I'm so proud of you!" His mom said, slapping him hard on the back.

"Stop saying that YOU OLD HAG!" Katsuki shouted, voice gaining volume in the middle of his sentence.

They watched as the two blondes started a screaming match, Katsuki's dad standing in the background, timidly trying to calm the two down.

"AAAHHH!!! I'M LEAVING! I CAN'T TAKE ANOTHER MINUTE OF THIS BULLSHIT!" Katsuki screamed as he started to stomp in their direction.

"KATSUKI! YOU BETTER STAY SAFE YOU BRAT! AND BE SURE YOU DON'T GET TOO DRUNK!" His mother screamed after him, one of her fists raised.

Katsuki merely let out a grunt/growl/scream.

Denki snorted next to Izuku, starting to laugh loudly the minute Katsuki arrived at their sides.

"Shut the fuck up, this is all your fault, Pikachu!" The blond yelled at Denki.

"Wha-? How is this my fault?!" Denki asked defensively.

"I don't know, it just is!!"

"Katsuki, stop! You'll break your teeth if you grind them so hard!" Kirishima voiced his concern, hands gently landing on the explosive teen's back and shoulder, the scent of concerned beta filled their senses, and managed to calm Bakugo down.

Sighing harshly, the explosive blond turned, and started walking away. "Let's just fucking go already," he grumbled.

Izuku chuckled nervously as all their friends started following the blond in groups.

Class A had decided to celebrate their graduation by going out to eat at a restaurant. Some of the waiters seemed a little nervous at the large group of rambunctious teens entering, but showed them to their side of the restaurant Momo had booked for them.

The tables were set up so that a maximum of eight people could sit together, yet still talk comfortably to the other tables. Izuku sat in between Shoto and Uraraka, Iida sitting at her other side. Across from them sat Bakugo, Kirishima and Kaminari.

Throughout their high school years, the eight of them, including Shinso-- who didn't feel like coming--had grown rather close, as strange as it seemed. Once Bakugo got over his hostility for Midoriya, they were able to get along well enough, even becoming friends again.

They clashed quite often, being two of the three alpha's in their group, but their abundance of beta's were able to calm them down. Shinso was mostly calm, so he rarely got into a fight. Shoto and Denki were the only two omegas.

The were all really close friends, not to mention the romantic relationships that some of them had with one another. It seemed a little odd at first, what with there being a polyamorous relationship between four of them, another two of them in a relationship and the other two single.

"Why'd your mom look so sad, Izuku?" Denki asked suddenly, breaking the comfortable silence that had settled over them as they browsed the menus.

Izuku frowned, biting his lower lip gently. "I'm not sure, but she said she has something to tell me once I get home,"

"What the hell could she want to tell you?" Bakugo questioned as he closed his menu, crossing his arms over it and leaning his weight on the table.

"I'm not sure," Izuku muttered as he looked up to the ceiling, a thoughtful look on his face. "She's been acting strangely for the passed few weeks,"

"What if it's something serious?" Uraraka asked suddenly.

"Like what?" Kirishima inquired curiously.

"I don't know!" Uraraka suddenly flailed her arms a little. "What if she's sick?!" She gasped dramatically. "What if she's dying?! From like, cancer, or something?"

Katsuki looked at her as if she'd just grown a second head.

Denki chuckled. "I think your imagination is running a little wild, she won't be able to hide something like that,"

"Mmmn, you're right," Uraraka conceded, looking thoughtful.

"No, I don't think it's something like that. She's hiding something, I can tell, but I don't think it's life threatening," Izuku stated as their waiter came, and took their order.

"In any case, it seems quite clear that she's afraid of telling you this secret," Iida spoke as the waiter left.

"Yeah, man, she seemed really scared," Kirishima added as Denki nodded.

Izuku frowned, staring at his hands, fingers intertwined, resting on the table.

"Could it be something about your dad?" Shoto asked quietly from his right.

Izuku turned his head, looking thoughtfully at the dual haired teen. "Maybe, it's more likely than her being deathly sick," he stated.

"Are your parents divorced or something?" Denki asked as the waiter returned, placing their drinks on the table.

"I'm actually not sure," Izuku uttered, hands gripping his glass. "Mom doesn't really like talking about him,"

"Then the possibility is higher that it has something to do with your father," Iida voices.

Izuku nodded absently, staring into his glass.

"Alright, that's fucking enough about depressing shit!" Bakugo shouted suddenly, pulling Izuku from his thoughts and startling some of their classmates and waiters. "Just fucking tell us tomorrow, okay, but right now, we're fucking celebrating!"

--

The door creaking open sounded far too loud in the quiet apartment as he snuck back in. It was nearing midnight, and Izuku was sure his mother had already gone to sleep by now.

To his surprise, Izuku could see the light of the living room still burning. Quietly, just in case she had fallen asleep on the sofa waiting for him to come home, Izuku snuck to the doorway of the lounge area.

"Mom?" Izuku asked in surprise as he saw his mother, sitting upright on the sofa, deep in thought.

She jumped at the sudden sound of his voice. "Oh, Izuku! You're back, welcome home," she greeted.

Izuku walked around the sofa, coming to stand next to his mother. "Everything okay? It's pretty late, we should go to bed," he said softly.

Inko shook her head, eyes trained forward and staring at the table.

Or more accurately, a small, wooden box that sat on the table. Carefully, Izuku moved to sit beside his mother, eyes trailing to the box. It wasn't anything special, just a plain, dark brown, nearly black, wooden box.

"..Do you still want to talk, mom?" He asked hesitantly.

Inko nodded, rubbing at her cheeks in frustration, trying to force herself to stop crying. She had promised them that she would do this once he was eighteen. And she would keep this promise.

Inko suddenly turned in her seat to better face her son, she reached forward and gently took both of his hands into her own. His hands were much larger than her own, and severely scarred, too.

What would they think, if they knew only half of what had happened to Izuku in his sixteen years of living with her? Would they accuse her of failing him; them? Would they tell her she did a terrible job of raising their son? Or would they praise her?

"Mom?" Izuku asked, fear tinting his voice.

"Izuku, what I'm about to tell you, might be very upsetting, but I'm asking if you could just hear me out first, before you get upset?" Inko asked, spurred on by the fear she could clearly hear in his voice.

Unsure, Izuku nodded hesitantly.

"Promise me you'll listen to me first before you get upset?" She urged.

Swallowing thickly around the lump in his throat, Izuku nodded again. "I promise,"

Inko nodded, too, taking a deep breath; she took a few moments to memorize his features.

He looked so much like the two of them, a perfect combination of both, and it was with this that she decided to just tell him. They must miss their son, and she wanted to reunite them, even if it hurt her in the process.

"Izuku," she started. "I am not your mother." She paused as she watched his eyes widen impossibly, sucking in a breath; he nearly choked. "You're adopted,"