Here have a ridiculously long chapter after a bunch of ridiculously short ones!

Tadashi had stayed in the hospital with Hiro, not going to classes because he was afraid something would happen. Aunt Cass could calm Hiro, but Tadashi could do it faster and without babying him too much. Once he was released Tadashi was relieved and happy to see his brother without the many tubes hooked up to him. He didn't care that Cass and he would have to help Hiro more: he never minded helping his little brother.

Hiro was in the hospital for nearly a week, but even after he was released, he hadn't gotten too much of his strength back. Attacks like that always took so much out of him, especially when they had given him a low chemo treatment before letting him go, hoping to kill the part of the tumor that had cause his lung to fill.

"It's because he's so small," the doctors would say, "The cancer has wrung him so dry it will take time before he's strong enough to do his everyday tasks again."

He had to rely heavily on Tadashi and Cass's help, even using a crutch when he walked to ease some of the strength it took. Longer walks called for a wheelchair, which Hiro hated, but couldn't do much about. All of this angered the boy greatly, and he would have occasional, sudden outbursts that startled and saddened his family. He just hated feeling incapable, and like such a burden: because that's what he was. He wished he would just get better or die already so that Cass and Tadashi wouldn't have to worry about him. Immediately, Hiro pushed the thought away. No, he couldn't die. He couldn't do that to Tadashi. He needed to get better.

He slept most of the time, only waking to eat a little and maybe play with his sketchbook if he felt up to it. It was nearly a week since he was released, and Tadashi was getting ready for school quietly in hopes not to wake his brother. But Hiro was awake, and watched his brother for a few minutes before speaking up.

"Nii-San, can you take me to see your invention?"

Tadashi bit his lip. Was Hiro well enough to leave the house?

Tadashi went to Hiro's side and ruffled his hair affectionately. "Yeah, I'll take you after main classes; I'll come back for you during free lab. Sound good?"

"Yeah!" Hiro nodded, seeming to brighten up.

Tadashi smiled. "Only a few hours," he promised, standing up and shouldering his bag before leaving.

Later on in the day, Hiro was getting dressed, when he realized how thin he was getting. It had been hard to eat much of anything over the passed few days, but he was determined to change that. He had to keep himself strong. He couldn't leave Tadashi alone, he refused to hurt his brother.

Hiro was waiting downstairs on the couch for Tadashi, watching some random nature show on tv. He'd taken all of his medicine and had run the oxygen tank for an hour, so he figured he'd be good to leave for a while.

Tadashi was the first one out of his class and hurried out of SFIT to pick up Hiro. He was excited to show him Baymax and put his robot to the real test – yes, the past week he tinkered, tweaked, and tested the bot everyday, but Hiro was the real test. Tadashi wanted to, both, see his brother's reaction, and see if he made Baymax advanced enough to cure his brother's cancer.

"Hey Hiro." Tadashi greeted as he came inside, putting his helmet and moped keys down he went to Hiro and ruffled his hair lightly. Hiro smiled at him. "Ready to go?"

"Yep! How was class?"

"Class was boring; the professor was just doing reviews." Tadashi said with a small sigh, as Hiro grabbed the crutch and used it to help him stand up, leaning against it as he made his way over to his brother. He paused and looked thoughtful, frowning slightly, "Uh…do you think I'm going to have use the wheelchair?"

"Depends, would you be more comfortable with it? Because I can carry you if you get breathless."

Hiro shrugged, "I want to to try to walk. I know the doctor said I should use it for longer walks, but I hate being in it. My legs work just fine."

Tadashi nodded and got Cass' truck keys before helping Hiro down the steps and into the truck, pretending not to notice the boy's gloomy expression at the unrequested assistance. Once Hiro was settled, Tadashi climbed into the driver's side of the car. The drive was short and quiet, the atmosphere calm.

When they made it to SFIT, Hiro got himself out of the car and to the lab that they had parked close to. Tadashi then helped him up the stairs and to the elevator that lead to his lab, thankful that everyone was too busy with their own experiments to notice them. He knew Hiro was self conscious with his crutch.

He loved to see how the school awed his brother. He'd never seen more than the outside and the showcase building from when they held the annual showcase for the inventors.
The lab looked amazing, getting to see all those intricate and extraordinary inventions. He knew his brother's would be better though. He was also glad no one saw them, or paid attention. He always got pitied looks and people would treat him like he was brittle.

He wasn't.

And he would show that to everyone soon enough.

"This place is awesome!" Hiro yelled as they walked down the hall, a cough wracking his body after the shout. A slight wheeze perpetrating his breaths, and he leaned a little heavier on the crutch, but Tadashi still smiled. He opened the elevator with his ID key and stepping in.

"I'm glad you like it. Not bad for a nerd school huh?"

"It's an awesome nerd school," Hiro nodded, coughing a few times into his hand and having to lean on his knee to catch his breath. Tadashi looked at Hiro with some worry, "Hey, you okay?"

The teen nodded.
"Just tired...I didn't think just this little bit of walking would do me in so much…" he tried to smile, as if it were a joke, but Tadashi could tell that he was upset.

He patted his brother on the shoulder. "Don't push yourself," he said lightly before the elevator dinged and the doors opened. Tadashi didn't try to assist his brother in walking, as not to make him feel worse, but kept close to him as they made their way to his lab. He swiped his ID again and pushed the door open.

Hiro looked around, a grin on his face. He sat down heavily in Tadashi's chair, a look of awe on his face. He coughed, rubbing his chest.

"Oww," he muttered.

Tadashi's eyebrows scrunched together in worry and leaned down to rub Hiro's back softly. "Are you-" He stopped as he heard a beeping followed by an inflating sound; he stood up, looking to where Baymax was inflating. Whoops: looks like he forgot to turn Baymax off - oh well. He was excited to see Hiro's reaction.

Baymax stepped out of his charging station and focused on Hiro before walking to him. "Hello," he greeted, waving his hand. "I am Baymax, your person healthcare companion." He lowered his hand. "I heard a sound of distress." His chest lit up to show ten different faces from happy to agony. "On a scale of one to ten, how would you rate your pain?"

"Hiro," Tadashi said with a smile, his voice full of pride as he gestured to the robot. "This is Baymax. he's the project I've been working nonstop on."

Hiro blinked in shock, wheezing softly as his eyes trailed over the robot. He leaned his elbows on his knees, trying to open his airways better.

"He's awesome!" he exclaimed. "A health care robot, huh? He looks like he has a vinyl covering…what can he do?"

"Baymax." Tadashi said motioning the robot to continue.
The screen turned off and the faces disappeared.

"I will scan you now." Baymax informed and looked Hiro up and down. "Scan complete. You are short-winded; to relieve the pressure in your chest you must rest for at least five minutes and focus on regulating your breathing. You also have a small tumor in your left lung, but luckily with right treatment and a stress free environment it will not spread."

"Tell me somethin' I don't know…" Hiro smirked.

"Your body produces enough heat in only thirty minutes to boil a half-gallon of water." Baymax said and Tadashi chuckled.

"He didn't mean that literally, Baymax," he informed the robot. Hiro smiled.

He ignored the small aches forming in his back and his left arm and leaned back in the chair as he looked over Baymax with interest.

"So…you programmed him with the same system they use in the ER, and he can make quicker diagnostics than going to the hospital. Dude, this is awesome! Do you even realize how great he would be to have in the ER? Heck, on an ambulance? He could tell them what's wrong in a second and the EMTs would be able to act quicker. You could save a lot of lives with him, especially when he gives back treatments like that." Hiro hummed, standing and circling around Baymax. He pushed his face into the robot's belly. "Titanium skeleton? Nice."

Tadashi nodded and smiled brightly.
"Actually he's an ambulance and an ER all in one, basically - with the exception of needles of course." After all it'd be no good if Baymax accident pricked himself and deflated.
"He has a supply of lollipops and can do anything from minor treatments to defibrillation, and he is also capable of lifting a thousand pounds despite how light and flexible his skeleton is. His only downfall is that he can't walk that fast or run," Tadashi continued, before wanting to test the robot further, "Baymax, is there anything Hiro should avoid?"

"Hiro should keep from straining activities, higher altitudes, and anything with peanuts due to his slight peanut allergy though it wouldn't be dire." Baymax said.

Hiro listened intently, watching Baymax's movements with a calculating gaze and grinning. Gleeful eyes turned to Tadashi, "I knew you would create something amazing. He's like a giant marshmallow. I wish there was one of these guys every time I went to the hospital, maybe then it wouldn't be so freaky." he chuckled.

The boy examined Baymax a little more, poking him in places to test the vinyl. It was amazing how nearly flawless he was. No wonder it took Tadashi so long to work on him. Unable to reach his crutch, Hiro sat back down.

"We might need to go home soon," Hiro admitted, "I'm getting pretty tired. But I think Baymax is amazing. You did a great job with him, Tadashi. The San Fransokyo Children's Hospital is having their annual convention. You should totally enter into their robotics contest and see if they'll put him into the staff! It'd make a lot of kids feel more at ease, especially in the cancer wing."

"Well, I'm glad you like him…because he was built for you." Tadashi smiled happily. "Maybe he would be helpful for others and I'm glad about that, but this Baymax is one of a kind and I built him with you in mind. Who knows, if you really like him then I might make some similar." He informed, smiling as he noticed Baymax was poking his stomach in a way similar to how Hiro did.

"No more cold hospitals and unknown doctors." Tadashi continued before hearing the door open a split second before he was pulled into a tight hug.

"We've missed you!" Honey Lemon said happily. "You haven't been coming to open lab, so when Gogo said she saw you, we had to come by!"

"Yeah, I've been working on some things outside of the lab."

"I see your marshmallow man is working," GoGo popped her gum, "Nice."

"And who's this little guy? A friend of yours?" Wasabi asked, smiling at Hiro.

"Uh…I'm his little brother, Hiro…" he said shyly. Honey gasped and rushed to the younger Hamada, hugging him as well.

"So you're Hiro? -We've heard so much about you!" she exclaimed gleefully, letting him go and pushing her glasses back up.

"Come on Honey, don't scare him away now." Gogo said though her voice kept neutral.

"What's up little dude?" Fred greeted before looking to Baymax in wonder. "Dude, this robot is so soft!" he exclaimed to Tadashi, hugging Baymax and leaning against him.

Hiro blinked at all of the people, looking between them and his brother. He hasn't even known Tadashi had friends. Well, he was sure he had to have some. Tadashi was a very likable guy, but he'd never heard anything. It made him smile slightly, glad his brother had people who would be there for him.

"All good things, I hope," he told Honey once there was a brief-second interval for him to speak. He kept his voice low so it wouldn't croak, sneakily kicking his crutch under Tadashi's desk so it couldn't be seen. Hiro didn't want Tadashi's friends to know.

"Just that you're a freaking genius!" Fred exclaimed with glee, letting go of Baymax. "Man, graduating high school at 13? That's amazing!"

"It's impressive," Gogo nodded, "Heard you're pretty good with robotics too."

Hiro leaned back and blew on his nails, polishing them against his chest, "Well, ya know, I don't like to brag, but yeah. I am pretty good."

"You'll have to show us some time," Wasabi chuckled, patting the boy gently on the back. The vibration it caused through his chest made sudden pain shoot through his lungs and made them tighten. Hiro winced slightly, coughing into his hand.

"Are you okay?" Wasabi asked before looking to Tadashi. "Is he alright?"

"Yeah," Tadashi said, looking to his brother worriedly, noticing the hidden cane and understanding he didn't want them to know.
"He's just a little sick." Tadashi covered.

"What?!" Wasabi exclaimed, jumping away from Hiro. "Why didn't you say that in the first place?"

Tadashi chuckled lightly and went to stand next to Hiro before going on to introductions. "Okay, so Hiro, these are a few of my closet friends. That's Honey Lemon; she's the best chemist I know."

Honey blushed lightly. "Well I wouldn't say best - but I am good at what I do."

"This," he motioned to the dark-haired girl, "Is Gogo. She's into mechanical engineering and is currently trying to make the fastest bike with no resistance."

"Sup," Gogo said, popping her gum.

"This is Fred, he gave everyone their nicknames, and is SFIT's mascot along with comic and science enthusiast - I've known him since high school." Fred just held his hand out for a high-five. "And the person slowly backing away is Wasabi. He's planning to major in applied physics." Tadashi leaned towards Hiro to whisper the rest. "Major OCD and germ-freak."

Hiro waved at each person as they were introduced, chuckling at Fred and giving him a high-five back.

"It's nice to meet you all," Hiro smiled softly. "It's also nice to know that Tadashi actually has friends. Here I was thinking my brother was a nerdy hermit.."

The group laughed lightly. "He is sometimes; we thought he was doing it again when I saw him sneak in," Gogo offered with a small smirk.

"Oh ha-ha." Tadashi said rolling his eyes before sighing. "We were about to go anyways before Hiro gets any sicker."

"Aww, well, we'll let you guys go." Honey said politely, "Sorry for just barging in like that."

"You gotta keep in contact more, man," Fred said, "We're your amigos! Can't leave us hangin!"

Hiro smiled gently, "I'll make sure he doesn't lock himself away so much, okay?"

"Thanks, little man," Fred grinned, "Hope ya feel better."

"Thanks." Hiro smiled.

The group said their goodbyes before heading out of the room. He was so glad when they were gone, because he leaned over against Tadashi and groaned softly. "Can we go home now…?"

Tadashi smiled at Hiro as he leaned against him and ran his fingers through Hiro's hair soothingly. "Of course… Baymax, can you please carry your charging chamber with us?" He requested.

Baymax nodded and went to the red box, closing it and shutting it down before picking it up with minor difficulty due to how inflated he was and how short his legs were.

Tadashi smiled before getting Hiro's crutch and turned to pick him up. "We'll go out the back so your new friends won't see," he said playfully as they walked out, going a different way that no one used. Soon they were at the truck and Tadashi helped Hiro in before taking the charging station from Baymax and setting it down. "Since you activated him, I need you to say 'I am satisfied with my care' so he can deactivate for now."

"I am satisfied with my care," Hiro repeated and watched as Batnax deflated into his charging holder. He snorted softly. "He is so cool."

Tadashi smiled and picked up the charging station once Baymax was put away. "I'm glad you think so." He admitted his relief, putting the box in the middle seat before going to the driver's side, getting in and driving them home.

When they got home, Hiro helped Tadashi get Baymax's charger upstairs into their room. He was a little winded by the time they got there, but nothing he couldn't deal with. He hugged his brother as soon as the luggage was set down, smiling happily.

"Thank you so much," he murmured, "For working so hard and spending so much time on something like this for me. You are seriously the most brilliant inventor there is."

Tadashi smiled and hugged Hiro close. "Thanks Hiro… And it was no problem at all." He said, pulling back and smiling even brighter. "I know you get lonely, and he doesn't seem like he'd be that fun, but he's adaptable, he can learn so you won't be lonely." He didn't want to mention his hope for Baymax to find a cure for Hiro because he didn't want to get his hopes up when he wasn't even sure if Baymax could at all.

Hiro smiled softly, "Good, so that means you can go and hangout with your friends more."

When Tadashi frowned, Hiro faltered.

"I know you worry so much about me, but I'll be fine. Once the tumor gets a little smaller, they should be able to do surgery to remove the part of the bronchial tube where it's at and then it'll all be better. In the mean time, you can't be pushing your friends away and avoiding living your own life. Even…even if by the off chance I don't get better, you need to have people you can rely on if that happens. These guys seem like pretty good people and they seem to really care about you. Don't lose that…please. You need people to be there for you to. You can't just bare all this weight yourself. You and Aunt Cass can't do this to yourselves."

Tadashi blinked and was at a loss of words at what Hiro said. That wasn't right. Tadashi didn't want Hiro to think that. He liked his friends, but he loved spending time with Hiro, Baymax was so Hiro could have some independence since Cass and himself won't constantly be worrying because they'd know Baymax would take care of it.

"Hiro…" He started, thinking of the words carefully before talking. "I love spending time with you and that's not going to change because of Baymax. I'll spend more time with them if you'd like, but I want to spend a lot of my time with you - I know I'd regret it if anything were to happen…"

Hiro sighed softly, "I know…I just…I don't want to hurt you worse if things don't go the way we hope…
"Cass got a call from my doctor earlier and he wants me to stop taking the medication I've been on. Since it's experimental, they don't know what its long-term effects are. They're afraid it's making the anemia worse and until they can do more studies, he doesn't want me on it anymore." He had wanted to wait until after everything to finally tell him, so that his brother wouldn't worry worse. The medication had been what had helped keep the tumor small.

Tadashi pressed his lips together at the information and tried to remain neutral through all of this new information, he knew Hiro didn't want him to worry or freak out…

He sighed and put on a small smile before hugging Hiro close. "It'll be alright, I just know it Hiro. You're too strong to let this knock you down… Are they going to give you a substitution or are you clear off of meds?" He asked curiously.

"He's going to come by tomorrow and give me a check-up before seeing what can be used as a substitute." Hiro told him and made a face. "I'll take anything he wants so long as they don't make me do chemo anymore. I hate how tired it makes me feel."

Tadashi smiled lightly. "I know you don't like drowsiness." He said ruffling Hiro's hair some. "When did you find this out?" He asked, genuinely curiously. If it was today…that'd explain the mood Hiro had been in.

He shrugged, "This morning while you were in classes. Aunt Cass got the call before she came to wake me up. I wanted to wait till we got home to tell you, because I didn't know if you'd still let me see Baymax or not."

Tadashi sighed lightly. "I wouldn't have," he admitted before continuing. "I would have brought him to you instead. I finished Baymax that night you were sent to the hospital, but…I wanted to give you some incentive."

Hiro gave a small chuckle, "You don't have to worry about giving me incentive. I fight because I want to. I don't want to leave you guys and there's a lot of things I still want to do."

"For instance…" he took a small calming breath, "I want to get into SFIT."

Tadashi smiled brightly. "Really?" He questioned before hugging Hiro. "I'm glad…" Tadashi admitted, thinking of the good things that could come from Hiro having a new goal.

Hiro nodded and hugged him back, "I want to be able to build things to help people…like you've done with Baymax. I had an idea…of building a robotic guide dog that would be able to help people with disabilities. It'd be able to lick someone's hand and tell them their blood sugar and pressure levels. It could talk to people who are blind. It'd be able to communicate with people who are deaf to translate for them, even be able to alert the police or a medic if the person was in danger, even before the person knows it. It'd be able to help people live independently so they wouldn't have to constantly be worried about the world around them. And that's only one of my ideas, I have a lot more too."

He pulled away to cough a few times into his hand, all the fast-talking hurting his chest with the quick breaths, but he was so excited to tell Tadashi. And it was the first time in a long time he'd seen his brother's eyes so full of life. He wanted to keep it that way for as long as he could.

"Oh, Hiro, that sounds great!" Tadashi said enthusiastically, this was amazing to him - Hiro was so hesitant to go outside, let alone go to school.
"I'd love to hear more, if you ever want to tell me- ah! I'll ask about enrollment on Monday." There was always the fair, but Tadashi wanted to check other options as well.

"Okay," Hiro grinned excitedly, he couldn't wait. Then he'd finally be able to work with his brother.