'Ow.'

'Hello, I am Baymax. Your personal healthcare companion.'

Tadashi whooped victoriously, eyes shining with tears. 'YES! Okay, scan me!'

Rena watched, grinning as Tadashi bounced on the balls of his feet, answering Baymax's questions with nothing but pure joy. Tadashi turned to her and smiled hugely, gesturing to Baymax.

'He works! FINALLY! He works!' He exclaimed excitedly.

Rena pulled him into a hug. 'Of course he works moron, you're the one that built him.'

Tadashi hugged her back. 'Yeah well. You helped!'

She pulled away from him, holding his shoulders at arms length and shaking her head. 'This was all you! I've done fuck all!'

She let go of her bother and stepped towards Baymax, studying the robot studiously. 'You literally cannot tell the difference between the original one! He's perfect!'

'Yeah well, that diagnostics protocol was so thorough I should think so.'

'What's up buddy!' She exclaimed excitedly, extending her arm out for a fist bump.

Baymax gently bumped his giant hand against her fist. 'Ba la la la la la la.'

'Good to have you back.'

'Thank you.'

Rena grabbed Tadashi's hand and squeezed it. 'Hiro's gonna be so pumped!'

Tadashi's eyes were shining 'yeah! Let's get Baymax home, I want him to see what we've done!'

Rena nodded, already beginning to pack up her stuff. Their little brother had no idea what they were up to - as far as he was conceded Baymax wasn't due to be finished for another week and a half.

Exactly twenty minutes later, they were packed up in Aunt Cass's car, Baymax in his red charging port in the backseat. Tadashi was driving, Rena was in the passenger seat. The latter was drumming her fingers on the dashboard as she flicked through her playlist.

'What you thinking?'

Tadashi rolled his eyes. 'It's a fifteen minute drive! Does it really matter?'

Rena simply ignored him. Idiot, of course it mattered. 'I'm gonna go with 'songs that make me feel alive again.' Any objections?'

'Why's your playlist called that?'

'Because these are some top quality songs!' She retorted, plugging her phone in and clicking shuffle. 'Oh TUNE!'

She cranked the volume right up, Fall Out Boy blasting so loud her ears began to ring. She grinned over at her brother who shook his head at her.

'If we crash it's your fault.'

'Noted.'

Fifteen minutes later, they pulled up outside the familiar site of the Lucky Cat. Rena unbuckled her seatbelt quick as lightning and dove out the door, immediately wrenching open the back door and pulling the red charging port onto the pavement. Tadashi appeared next to her and grabbed one side, Rena getting the other. Together (and after much frustration), they hauled Baymax into the basement.

'Jeez,' Rena panted as Tadashi flicked the lights on 'couldn't you make that thing any lighter?'

'Just be glad we stuck with the vinyl!'

The plan was to hide Baymax in the corner behind the couch so he could inflate and terrify Hiro. 'Just in the corner over there yeah?' Rena asked Tadashi. The latter nodded and she pushed Baymax across the floor, trying her best not scratch the red charging port.

'Alright.' She said straightening up. 'That's that done.'

'You go grab him then and I can wait down here.' He pointed to his prosthetic. 'I need to take this off.'

Rena nodded, turning and making her way up the stairs as Tadashi flopped down onto the couch. Her fingers traced the banister and she smiled to herself. So far, so good.

Aunt Cass was sitting at the kitchen table, humming to herself and tapping keys on a laptop. Mochi was on her lap, purring softly.

'Hey Aunt Cass!'

'Oh Rena! Hi! When did you get back?'

'Just now - Tadashi and I have a surprise for Hiro.'

'Oh do tell!'

Rena grinned at her, leaning against the counter. 'Tadashi finished the second version of Baymax.'

Aunt Cass clapped her hands together excitedly, scaring Mochi and sending him running across the room and up the stairs. Cass didn't notice in her excitement. 'Oh wow! What ever did happen to the first one?'

Rena laughed uncertainly. 'It's uhhh... it's a long story. Is Hiro upstairs?'

Aunt Cass frowned. 'I thought he was with you?'

'Uhh... no? It was just Tadashi and I at SFIT.'

'Oh.' Her Aunt looked frightened for a second before shaking her head and smiling warmly at her niece. 'I must just be mistaken. I swear he told me he was going with you but he might have changed his mind.'

Rena couldn't help but feel a little uneasy. 'Okay! I'll go grab him then. Love you!' She added over her shoulder as she skipped towards the stairs.

'Love you too!'

Rena ran up the stairs two at a time, the uneasy feeling in her chest growing when she realised the light in Hiro and Tadashi's room was off.

'Hiro?'

There was no reply. She flicked the light on and wasn't surprised to see that Hiro was not there.

'Fuck.' She muttered under her breath, pulling out her phone. 'Shit.'

She rang Hiro's number, but was dismayed to find that as soon as she punched the number in his phone started vibrating from his bedside table. She crossed the room in two strides and clicked it on, her own missed call displayed on the screen.

She ran a hand through her hair. So Hiro was gone and had left his phone at home. Fine. He was probably at SFIT. They'd just missed him. Or a friend's house. Yeah. Probably. Hopefully.

She sighed loudly. Typical. Just when she was beginning to feel relaxed - something else had to happen!

Something soft brushed against her leg. Mochi. She crouched down and scratched his head, smiling softly as he purred. ' What are we gonna do, eh?' She whispered to the cat. 'Where is he? You gonna help me find him?'

As if Mochi could understand what she was saying, the cat jumped onto Hiro's desk and sat on his keyboard. The screen whirred to life to display a website. Rena furrowed her eyebrows in confusion and stepped towards the computer. She brushed Mochi's tail off the mouse and scrolled down.

'I'm gonna fucking kill him.' She whispered as she read the details on the website. She seized a scrap piece of paper lying on his mess of a desk and scribbled down the street address before shoving it deep into her pocket.

'Thank you.' She whispered, kissing the top of Mochi's head before turning and practically falling down the stairs in her haste to get down them.

'I'm going out!' She called to Cass, not giving her Aunt a chance to respond as she ran through the tiny apartment.

She barrelled down the stairs, jumping into the basement and scaring the life out of her older brother.

'Calm down!' He exclaimed, putting a hand over his heart. 'Not everything's a race!'

It took a second for Rena to get her breath back. 'He's not upstairs and his phone-' she took it out her pocket and tossed it to Tadashi '-is here'

Tadashi gave her a confused look. 'Is he at SFIT? I thought he said he was staying at home.'

Rena shook her head and brought out the scrunched up paper. Tadashi grabbed it, his face slowly loosing colour as he read what was on it. 'Does this mean what I think it means?'

Rena pressed her lips together and nodded. 'Yeah.' She whispered quietly.

Immediately, and without saying a word, they both sprang into action. Tadashi was attaching his prosthetic, muttering under his breath whilst Rena frantically googled for the address.

'Found it!' She said after a minute or so, 'it's a ten minute drive from here.'

Tadashi nodded. 'You stay here. I'll take the moped, it'll be faster.'

Rena scoffed loudly. 'Yeah, like I'm letting that happen. The car will be fast enough.'

'Rena, please. It's dangerous. I got this!'

She folded her arms and shook her head. 'Absolutely not. I am not letting you go alone.'

'Rena-'

'If you don't let me go I'll just call Gogo and get everyone involved.'

Tadashi held her gaze for a moment and sighed. 'Okay. But we're bringing Baymax.'

Together, they hauled the red case back to the car and shoved it into the backseat. Rena jumped into the passenger seat, sense of emergency rising with every passing second.

Tadashi pulled out of the street, going slightly over the speed limit. Rena's palms were sweating, but the adrenaline was kicking in. 'Okay, take a left here-'

For ten minutes they drove in almost silence, fear numbing their minds. Rena looked over at Tadashi, his jaw was set and he was gripping the steering wheel so tightly his knuckles were white. He was furious.

She knew he was thinking the exact same thing that she was. They could have stopped this. She could have stopped this. If she was just more alert! Rena spotted the warning signs months ago, but instead of putting her little brother's wellbeing first she decided to ignore them and pretend like they weren't there. And now she was paying the price for that.

'You have arrived at your destination.'

The robotic voice of Google maps brought her back to the present. The car crawled to a stop and she clambered our, shivering in the night air.

They were across the street from dimly lit back alley. She could already hear jeers and shouts from where they were stood. Fear prickled down her spine. How Hiro survived out here she had no idea. A man was crouched next to a bin, his head bowed so low it was touching his knees. Needles and empty beer bottles littered the streets, shards of broken glass crunches beneath her old Vans.

The scene of the botfight, and an elegant one at that.