Kudos DisneyandWildKrattfangirl for the Christmas suggestion.

Merry Christmas guys. I hope you enjoy.

Hiro Age: 3

Tadashi Age: 18

"Looks like you have one more gift leftover, Hiro." Tadashi said. He handed Hiro a brightly colored red wrapped gift.

Christmas had been a solemn affair this year. Hiro's cheerful nature kept most of the cheer going, but Tadashi could see how Hiro would look at the kitchen, expecting their mother to come out of it with treats. Tadashi caught himself doing the same thing. It hurt to think that they were gone.

Hiro took the gift, reading the label on it. To: Hiro From: Mom and Dad. Hiro looked up at his older brother. "From mom and dad?"

Tadashi smiled softly, ruffling Hiro's hair. "Yeah, one last gift from them."

Hiro opened the gift revealing a white cat mochi plush. "They remembered!" Hiro said.

The mochi plush had been a huge hit several months before the accident. Hiro had asked for one, but his birthday had come and gone by then. Their mother had remarked offhandedly that Hiro could get one for Christmas. Tadashi had gone out to find one, just so Hiro would have one last piece of their parents.

Hiro gave the plush a squeeze. "I miss them Dashi."

"Me too, me too."

xXxXx

Hiro Age: 4

Tadashi Age: 19

"Higher Baymax!" Hiro commanded.

"I advise you to be careful, Hiro," Baymax said as he lifted the small boy up. Hiro reached out with his small arms, trying to place the star on the top of the tree.

Tadashi laughed. Hiro had been very adamant this year about decorating the tree by himself. Well, by himself with Baymax's help. The majority of the ornaments hung on the bottom half the tree and Baymax was sporting an extra strand of Christmas lights. Still not bad for Hiro's first try.

Tadashi whipped out a camera to snap a picture. This was another one for the photo album. He had gotten in the habit of using his phone to snap pictures, something he had learned from Honey Lemon. Hiro was growing up so fast and Tadashi wanted to record every moment possible.

"Have to get closer Baymax."

"I cannot get closer Hiro. I will hit the tree."

"Here Baymax," Tadashi said, reaching for Hiro. "I can get closer." Baymax transition Hiro over to Tadashi.

"Got it, Hiro?" Tadashi asked as his baby brother reached for the top of the tree again.

"Got it!" Hiro said. The glowing white star was now perched on the top of the tree. It was crooked, but it matched the mismatched style of the tree.

Tadashi gave his brother a hug. "Good job you two."

xXxXx

Hiro Age: 5

Tadashi Age: 20

"Alright, now sugar will keep the cookies moist. Lots of sugar means glutenin runs off with sugar, your gliadin runs off with sugar and you don't get much gluten formed," Honey Lemon explained. "Egg yolks also promote richness and moisture, while egg whites work as leavening agents. We already covered the difference types of flour, why you should sift it and the use of baking powder and butter. Any questions Hiro?"

Hiro shook his head, having written down everything Honey Lemon had spoken about. Who knew baking would be so much fun? Chemical reactions! It was edible science! No wonder Honey Lemon was so excited all the time. Hiro couldn't wait to get started.

"Great!" Honey Lemon said, hanging up her lab coat and grabbing an apron. "Then let's bake some cookies for Santa."

"Yay!"

xXxXx

Hiro Age: 6

Tadashi Age: 21

Ayame looked down at the small boy in front of her. "Hiro…" she started. "Does your brother know you're here?"

Hiro blinked up at her. "No?" he said guiltily.

Ayame pinched the bridge of her nose. Thank god that her own son, Asher, was not this adventurous. "And you came here by yourself?" she asked, dreading the answer. Here being the Kinga Building, in Tadashi's private lab to be more specific. And it was seven at night! She didn't even want to think about the potential security holes that Hiro had overridden to get into the building much less how Hiro had gotten here at night. A six year old boy walking by himself at night. She suppressed the urge to shudder. If she wasn't working late tonight…

"I came with Baymax," Hiro answered, gesturing to the white robot who was playing with a soccer ball in the background.

"Hello, Ayame," Baymax greeted, stopping for a moment.

Ayame was beginning to understand the secondary reasons to why Tadashi had built Baymax. She kneeled down to Hiro's eye level. "Hiro," she asked, glancing at the sheets of paper and tools that surrounded the small boy. "Why are you here?"

Hiro bit his lip. "I wanted to make something for Tadashi for Christmas."

Right. Okay. So Asher wasn't the only one who set off her maternal instincts. Good to know. The Hamada brothers were going to be the death of her. Was it too late to adopt them into the family? Perhaps something to discuss with Tier when she got home.

"Where does Tadashi think you are?" Ayame asked, wondering if she needed to call up her employee before he had a heart attack over his missing brother.

"At Asher's house."

Well… not the truth, but not a total lie since home was next door to the Kinga Building. Ayame let out a sigh. "Alright kiddo. Show me what you have planned."

"You're not going to tell Tadashi?" Hiro asked, eyes wide.

"No. What kind of person would I be if I told him what his Christmas gift was. But no working on Tadashi's gift unless I'm present to help you hear me?" Ayame said. Tadashi would kill her if anything happened to Hiro. Besides, the reason why she had been working late was because Asher and Tier had been working on her gift together at home. After the third new invention yesterday, Ayame had been bored out of her mind trying to kill time. This would kill two birds with one stone.

Hiro nodded. "Okay!"

Going to be the death of her, definitely.

xXxXx

Hiro Age: 7

Tadashi Age: 22

Hiro woke up at 6am, excited. It was Christmas morning! He flew out of his bed and down the hall into Tadashi's bedroom. "Tadashi! Tadashi! Wake up!" Hiro jumped onto the bed.

"Five more minutes," Tadashi muttered sleepily. He buried his head into the pillow and tried to ignore Hiro's bouncing on the bed.

"Tadashi!" Hiro said, climbing onto his brother's chest. Why was Tadashi still asleep? It was Christmas morning! There were gifts to open and pancakes to cook! There was time for sleep later!

"Omph, you're heavy bonehead," Tadashi grunted, opening his eyes.

Hiro beamed. "Merry Christmas!"

Tadashi smiled back. "Merry Christmas."