Hello everyone, I'm PurpleNicole531! While I may not be new to Fanfiction, I am new to the Big Hero 6 archive! This is officially my first story in the fandom! Like many of you, I loved the movie and I loved Baymax Returns (the pilot to the new series)! I can't wait to see where it goes! Anyways, this is a look into Hiro and Tadashi's childhood (at least my version of it). If you couldn't already tell, I love Hiro and Tadashi's brotherly relationship. It's probably one of my favorite parts of the movie (among many others). My initial plan for this story was to go from Hiro's birth to their current age, but that may change later on. I'm still not certain how this will go, as it's my first time writing these characters and this setting, but hopefully I do well! Either way, I hope you enjoy the story!

Enough chit-chat! Let's get things started! :D

Four year old Tadashi Hamada grinned as he bounced up and down excitedly, following his mother into the kitchen. The woman smiled as she walked around, preparing dinner for the family and watching her son as if he were a lost puppy, with the way he kept moving around her and getting in the way.

Mrs. Hamada didn't mind though. She loved her son with all her heart.

And pretty soon, there was going to be another addition to the Hamada family.

Mrs. Hamada smiled as she looked down and rubbed her protruding belly affectionately.

Just one more week. She thought. And Tadashi will finally be a big brother!

Tadashi must've read his mother's mind as he suddenly blurted out. "Mommy! When is the new baby coming?"

"Just one more week, sweetie." She replied, running her fingers through Tadashi's hair. "And then you'll finally meet your new baby brother or sister!"

Tadashi frowned. "You mean you don't know?" He asked, confused.

Mrs. Hamada laughed to herself as her son looked up at her with those big brown eyes, as wide as saucers. "Your daddy and I wanted to keep it a surprise. Not even Aunt Cass knows yet!"

Tadashi smiled again. He always liked Aunt Cass. Aside from his parents, she was the closest relative to him. "Whoever it is, I'll make sure to be the best and most awesomest big brother they'll ever have!"

Mrs. Hamada laughed again. "I'm sure you will sweetie. I'm sure you will."

Suddenly, the front door opened as another person entered the house.

Tadashi gasped as he turned around and ran into the arms of the person who walked in. "Daddy!"

Mr. Hamada scooped up Tadashi in his arms and held him up, grinning happily. "Hey there, kiddo!" He exclaimed in response. "Staying out of trouble, I suppose?"

Tadashi nodded. "Mommy and I were talking about the new baby!"

Mr. Hamada nodded in acknowledgment. "Ah, she still won't tell you who the baby is, right?"

"Nope!" Tadashi responded. "She wants to keep it a surprise! But that's okay! I can't wait to find out!"

Mr. Hamada chuckled. "Well, that's great! Hey, guess what I got for you?"

Tadashi's eyes widened as he clapped his hands in excitement. "A present for me? You're the best, daddy!"

Mr. Hamada chuckled again. "Just don't tell anybody, Tadashi." He joked, reaching into the bag that sat on his side. What he pulled out next made Tadashi stare in awe and wonder.

"A San Fransokyo Ninjas hat?!" Tadashi exclaimed. "You found one?"

"Yup, just for you, buddy." Mr. Hamada stated, setting the hat on top of his son's head. The hat covered Tadashi's eyes as it was still too big for his head, but he gave his dad a grin as he pushed the hat up from his eyes.

The hat was just what Tadashi wanted. A black baseball cap with the San Fransokyo Ninjas logo on the front. Tadashi had wanted one for some time, and now, thanks to his dad, his wish came true.

"You'll grow into it, kiddo." Mr. Hamada said, setting Tadashi back down on the ground. "If you're anything like me, you'll be tall in no time! I had my growth spurt at seven years old!"

Mrs. Hamada smiled as she walked over to her son and husband. "Welcome home, honey."

"It's nice to be back with my two favorite people!" Mr. Hamada replied, giving his wife a kiss and ruffling Tadashi's hair. "How's dinner coming along? A man's gotta eat after a long day of work, you know!"

Mrs. Hamada nodded. "Just a few more minutes. Why don't you help Tadashi set the table?"

"Alright," Mr. Hamada said. "Come on, kiddo. Let's help mommy, okay?"

Tadashi nodded, smiling as he followed his dad to the kitchen and grabbed some plates and silverware to set on the table for dinner.

Tadashi's stomach rumbled as the familiar scent of noodles and pasta sauce filled the air. He licked his lips in anticipation. Spaghetti: his favorite!

After he and his dad finished setting the table, Mrs. Hamada came over with the spaghetti, serving a hearty portion on everyone's plate.

"Yum!" Tadashi sat down on his chair and reached for a fork, about to stuff his face full of pasta and tomato.

Suddenly, however, Mrs. Hamada let out a surprised yelp. Her face set in shock as her eyes widened, staring almost in a trance.

"Honey?" Mr. Hamada looked at his wife, concerned. He gently touched her shoulder. "What's wrong?"

"Mom?" Tadashi asked, his eyes full of concern as well.

Mrs. Hamada let out a shuddering breath. "The baby . . ."

"Yes?" Mr. Hamada prodded.

"The baby . . . it's coming."

"Yes, I know. One week from now."

"No, now!" Mrs. Hamada yelled.

Mr. Hamada frowned. "Honey, calm down. Let's just eat dinner now, okay?"

Mrs. Hamada shook her head repeatedly. "No, we can't! The baby is coming now!"

"What?" Mr. Hamada looked confused, but a tinge of worry was in his eyes.

"My water just broke." Mrs. Hamada replied, still breathing heavily. "My. Water. Just. Broke."

Mr. Hamada's eyes widened as the situation finally set in. "Your water just broke?"

Mrs. Hamada nodded. "Yes! We have to go to a hospital, now!"

Mr. Hamada sighed. So much for one week. No matter what, the baby was coming. It was now or never.

And at this point, never was not an option.

Mr. Hamada's face set in stone as he finally stood up and took immediate action. "Tadashi, grab your coat and get into the car. We're going to the hospital!"

Tadashi nodded in response as he got off his chair and ran toward the closet to grab his coat. Meanwhile, Mr. Hamada was helping his wife out of the house and into the car in the driveway.

Tadashi's plate of spaghetti and the fork he was about to use was now left forgotten on the table.

Tadashi sat in the middle backseat of the car, clutching his new hat anxiously. He stared down at the logo, frowning.

At the front of the car were his parents. On the right was his mom, holding her stomach and taking deep breaths. On the left was his dad, who was gripping on the steering wheel, driving as fast as he could while sneaking glances at his wife. Nothing, but worry and determination was etched on his face.

Tadashi sighed softly. He was worried too. He was worried not only about the baby, but also about his dad's driving. Sure, they had to get to the hospital as quickly as they could, but that wasn't worth getting into a car accident.

Luckily, the local hospital wasn't very far away. If the traffic wasn't bad, it would only take them ten minutes to get there.

"Tadashi," Mr. Hamada snapped his son out of his thoughts. Tadashi looked up to see his dad holding out his cell-phone to him. "Call Aunt Cass. Tell her to come to the hospital. A baby is being delivered!"

Tadashi obliged, taking the cell-phone and dialing his aunt's number. After a few rings, the woman finally picked up.

"Hello!" A cheery voice spoke. "Cass Hamada speaking!"

"Aunt Cass!" Tadashi yelled a bit too loudly.

Tadashi could practically see the smile spreading across his aunt's face at the sound of his voice. "Tadashi! Wonderful to hear from you! How's my favorite nephew?"

Tadashi didn't answer his aunt's question and instead went straight to the point. "Mom's having the baby!"

"What?" Aunt Cass asked, shock evident in her voice. "Now? But the baby wasn't supposed to come till next week."

Tadashi shook his head, even though Cass couldn't see it. "Not anymore! We're driving to the hospital now! You have to come quick!"

Aunt Cass understood, nodding her head as she replied. "Okay, I'll close up shop and meet you three there. Thank you for calling and letting me know, Tadashi."

"You're welcome. Bye Auntie."

"Bye Tadashi."

Tadashi looked at the phone as Aunt Cass hung up. He sighed, dropping the phone to his side and slouching a bit in his seat. A frown crossed his face as he stared up at the ceiling of the car.

City lights, buildings, and other cars were just a blur as Mr. Hamada drove his family through the streets of San Fransokyo, trying to get to the hospital as soon as possible.

Once the Hamada family arrived at the hospital, nurses immediately attended to Mrs. Hamada, setting her on a gurney and rolling her into a hospital room. Mr. Hamada stayed with his son, who were both standing in the waiting room, anticipating and hoping for a good outcome.

Tadashi held onto his father's hand, his hat back on his head, covering his eyes. He didn't bother to push it back up. All that was on his mind was his mother, who he hoped was okay.

Not long after, Aunt Cass burst into the room, out of breath and in a panic. "Where is she? How is she? What happened? Is the baby okay?"

Mr. Hamada calmly put his hand up to stop Cass's oncoming questions. "It's okay, Cass. The nurses are with her right now. All we can do now is wait and see."

Cass nodded, clasping her hands and sighing in relief. Tadashi looked up at his aunt to notice part of her hair was covered in powdered sugar and her shirt was caked in flour.

Cass met her nephew's gaze, smiling down at him. "Aw, Tadashi, you look so cute with your new hat on!" She gushed, any previous anxiety now diminished.

Tadashi nodded and smiled, still focused on and worried about his mother.

Mommy, please be okay.

Suddenly, a nurse strolled back into the waiting room, a clipboard in hand. She walked up to the two adults and child. "Mr. Hamada, your assistance is needed. The doctor will be arriving shortly to tend to your wife, but she requested your presence immediately."

Mr. Hamada nodded in acknowledgment. He looked down at Tadashi and gave a reassuring nod as he let go of his hand and followed the nurse out of the room.

Aunt Cass knelt down and wrapped her arms around her nephew lovingly. "Don't worry, Tadashi." She whispered into his ear. "Everything's going to be okay."

Tadashi sure hoped so.

Tadashi felt like hours had passed by, when in reality, it was only a few minutes. Cass was still holding onto her nephew as if he was suddenly going to disappear in thin air.

"Aunt Cass . . ." Tadashi mumbled, feeling his chest constrict as Cass squeezed him a bit too tightly.

Cass immediately let go and apologized, putting a hand to her mouth. "Oh, I'm so sorry, Tadashi!"

Tadashi nodded, not feeling too mad about it.

Suddenly, the doors opened again and Tadashi saw his dad and the same nurse enter the room. Smiles were on both of their faces. This made Tadashi smile as well. Finally, he could feel some more relief.

Mr. Hamada didn't say anything as he reached for Tadashi's hand. The boy's eyes widened as his father led him away from Aunt Cass and toward the hospital room his mom was currently in.

The nurse said a few words to Aunt Cass, but Tadashi didn't hear. A few seconds later, the nurse and Aunt Cass followed Tadashi and Mr. Hamada as they all made their way to the hospital room.

Tadashi didn't know what he was going to see, but as the door opened, he immediately saw his mother lying in the bed. Besides her somewhat disheveled hair and sweat-beaded forehead, she appeared to be perfectly okay, much to Tadashi's relief.

A doctor was standing right next to her, both of them had glowing smiles on their faces.

And Mrs. Hamada was holding a bundle in her arms.

Tadashi gasped. Could it be?

Mr. Hamada lightly nudged Tadashi in the back. "Go on ahead, buddy. Your aunt and I will be waiting right here."

Tadashi nodded as he hesitantly walked toward his mother. The doctor and nurse left the room to give the family some privacy.

Mrs. Hamada smiled at her son, still holding the bundle in her arms.

"Come here, Tadashi."

Tadashi stepped closer to the bed and quickly pushed his hat back up so he could see more clearly. His mother reached down so her son could see the bundle in her arms.

Tadashi's mouth opened in awe as he stared at the baby, who appeared so small and was sleeping so soundly. Messy tufts of black, unruly hair peeked out and Tadashi couldn't help, but laugh in glee.

Mr. Hamada stepped forward, placing a hand on his son's shoulder. "Tadashi, meet your new baby brother."

Baby brother? I have a baby brother!

Tadashi grinned, hardly believing it. He was finally a big brother!

And now, he had a baby brother to take care of and play with.

Tadashi's dream of having a sibling had finally come true. No longer was he an only child. Now he had a friend and playmate.

At that moment, Tadashi vowed to be the best brother he could be.

"Do you want to hold him?" Mrs. Hamada asked.

Tadashi's eyes widened in surprise. He slowly nodded as his mother proceeded to hand the bundle of joy to him.

Tadashi looked down at his sleeping baby brother, a permanent smile on his face. He was so cute.

Suddenly, the baby's eyes opened as he saw his older brother for the first time. Matching big brown eyes met Tadashi's and he sucked in a breath of disbelief.

They were already so alike.

The baby continued to stare at Tadashi, as if analyzing him.

Tadashi gasped, wondering if he was going to like him.

And then, the baby smiled, as if approving Tadashi's presence.

Tadashi let out a small sigh and smiled. "He likes me." He whispered. "My baby brother likes me."

Aunt Cass watched the scene unfold in front of her. "Aw, he's so precious!" She cooed. "What's his name?"

Mrs. Hamada answered her question. "Hiro. Hiro Hamada."

Tadashi looked down at his baby brother, Hiro. He liked that very much.

"Hi, Hiro," Tadashi replied, smiling at him. "I'm Tadashi, your older brother. I have a feeling we are going to be great friends someday."

Mr. Hamada wrapped an arm around his wife, both of them smiling and admiring the moment. Aunt Cass giggled in delight as she whipped out a camera from seemingly out of nowhere. "How cute! This one is definitely for the photo album!" She exclaimed, snapping a pic of Tadashi holding his little brother.

Tadashi barely seemed to notice. For at that moment, it was just him and his brother.

My baby bro. My little Hiro.

Aw, how sweet! I really enjoyed writing this and I hope all of you out there enjoyed reading it! There will definitely be more coming soon, so keep your eyes out!

Any feedback is welcomed and appreciated. Let me know your thoughts and I'll see you all in the next chapter for more Hiro and Tadashi brotherly time!

Until we meet again,

PurpleNicole531