A/N I don't have much to say, just that it's back-story time! So enjoy and tell me what you think, I need to know how this is going people!

Anyways, love you all!

Rachel~

Kat leaned back in her chair that was in front of the computer. She checked her watch which told her it was half nine in the morning, which was only 5 minutes later than when she had previously checked her watch. The wait for CtOS 2.0 was only a week, but to everyone in the bunker it had felt like a month. And Kat couldn't take it anymore, she had to leave the dark and dingy confines of the bunker. Kat was tapping her fingers on the desk, thinking of what to do. She supposed she could bake a cake, that was kinda her think, but then she'd have to go out and buy ingredients because the Bunker's kitchen was way under stocked. She pushed herself away from the desk and stood up. This caught the attention of Ray and Aiden who where sitting by the desk, catching up with each other (it turns out Ray was the one to kill that shady hacker Defalt, with the help of Tobias of course.)

"I'm going shopping." Kat said bluntly "Do you want anything?"

"Yeah, some beer would be nice" Ray said. Typical Ray Kat thought, but did agree some beer would be nice

"Aiden?" She asked, realising he hadn't contributed to her small shopping list

"Nah, I'm good" was his reply. Kat tutted and rolled her eyes

"Suit yourself" Kat sighed and walked up the stairs to leave the bunker, picking up her bag that she had flung on the floor earlier.

Once at the shop, she picked up her shopping cart and started on the shopping. She got the beer first, buying quite a few bottles due to the amount of people currently residing in the bunker. She mentally checked that off her list. She then started picking up all sorts of flour and icing things until she was stopped but an excited voice calling her name from behind. She span around to see who was beckoning her and, to her surprise and excitement, she saw her friend Sarah standing across from her. They both broke into a smile and embraced in a hug. Once they parted, Kat looked her up and down, she hadn't changed much since she left Chicago, her freckled face and blue eyes where unchanged, ad her smile was as charming as ever, but Kat could sense that there was something wrong, Kat just smiled and then said:

" I didn't know you where back in Chicago!"

"Yup, I flew in a week ago!" She said a wide smile on her face, this made Kat smile slightly, which is a feeling he hadn't had in a while

"It's been way too long" Kat said, with some remorse in her voice. She wished they hadn't parted ways the way they had, but that couldn't be changed now.

"Yeah, well I've been traveling, you know after what happened" Sarah said, lowering we voice at the end, and Kat just nodded solemnly

"Yeah, well you're back now! So that means I finally get to go to a bar with someone, and not just alone" Kat joked, as they both walked down the isle to the check out

"Um, yeah about that" Sarah started and Kat tensed up a bit, knowing something wasn't right "well, I don't think we should be meeting each other, at least not for a while. We can't let thins get out of control like last time, and need to know things are stable with you" she explained, sad that she had to push away her good friend. Kat nodded again. This wasn't the first time she heard this, and Sarah certainly wasn't the first person who had distanced themselves from her. Sarah sighed and took the silence as an indication that things had not actually changed. They both late for their stuff and started walking down the path in silence

"I guess who haven't left the life then?" Sarah asked, breaking the silence

"Guess not" was all Kat replied in. She never understood Sarah's dislike to hacking, considering she had been one all those years ago. Sarah groaned, annoyed by this response

"When will you learn? People will just end up being killed and it'll be on you" Sarah raised her voice and stopped in the middle of the street

"I know, I know, I just don't have the will power you know?" Kat explained, she had a feeling wouldn't persuade Sarah, and she was correct

"Well, I would have thought people's safety would be enough will power to-"

"Will you stop? I didn't get it easy like you, okay? You left the city before Blume could track you and keep their beady eye on you. I meet got that chance, I was sucked in an then it was too late" Kat interrupted her. Sarah looked shocked at the out burst and then shook her head slightly.

"You think I had it easy, huh? I had to deal with the guilt of leaving you behind, I had to deal with my conscious, which is something you seem to lack" Sarah argued. Kat just stood there, no emotion on her face. She looked away to the path that will lead her to her car and looked back

"Well, it was good to see you" Kat said and started walking away

"The same can't be said for you" Sarah retorted as she turned and walked in the opposite direction.

Kat hoisted the bags into the bunker and started making her way to the small kitchen in the bunker, giving Aiden and Ray a hello when she passed them. There really wasn't much inside the kitchen, just some metal surfaces, a fridge and an oven. She set the bags on one of the counters and began the unpacking, going trough the conversation she had with her friend at the shop. She was so enveloped with her thoughts that she didn't realise Aiden has walked into the small kitchen and had walked up behind her, so when he talked, Kat jumped slightly.

"Sorry, I didn't mean to scare you" Aiden apologised, looking inside the bags of things. Kat looked too and realised that in her sour mood she no longer wanted to bake anything.

"What do you need?" She asked grumpily, turning to face Aiden, a slight look of confusion on his face at Kat's harsh tone. She wasn't in the mood to apologised, so she just waited for his answer

"Yeah, Ray wants his beer in the fridge because he's going to bed" Aiden recounted

"Rodger that" Kat said and put one pack into the fridge, leaving two more packs on the counter. She looked to Aiden and motioned to the beer and he just nodded in reply. Kat reached for the bottle and twisted it open, handing the bottle to Aiden and then opening one for herself, jumping up and sitting up on the counter, taking a single swig of her beer. Aiden leaned on the opposite counter so he was facing her, also sipping in his beer.

It didn't take long until they had give through four beers each and where equally as buzzed from the drink. They had been in the kitchen for a few hours now, just talking about things, but mostly just sitting in comfortable silence. In the few hours they had been talking, Kat had learnt quite a but about Aiden and his revenge story and how he had met Jordi. Kat has listened intently, her secret liking to the guy growing with every story. They where both halfway through their last beer, Aiden asked:

"So, why where you so angry earlier?" Kat sighed, she didn't know if it was the drink or the fact that she needed to rant, but she decided to tell him everything

"I saw someone today who reminded me of the past" she stopped, expecting him to say something, but the resounding silence urges her to carry on with her story" well, I had this friend okay, her name is Sarah and she is great, she is truly awesome, and we moved here from England together to go to uni. We both had an interest in hacking, and we decided to make that our thing so, in our second to last year of uni, we decided to quit and created a hacker space with a few of our friends. We became pretty big, hacking into corrupted corporations and exposing their lies. We actually had a friendly rivalry with Tobias's little hacker space"

"Oh, I know the place, BlumeForge right?" Aiden interrupted and Kat nodded

"It wasn't always called that, it only got that name when Blume injected a butt load of money into that place. Our hacker space was also going to get that treatment, but Blume decided we weren't their kind if people so we got ditched. A lot if the guys in our hacker space either quit or left for BlumeForge, which meant we dissolved. Sarah was one of the people to leave and create a life of her own. I was going to do that myself, if Blume hadn't hired me as a contract hacker, along with Ray. Anyways, once I got wind of the dangers of CtOS, I quit the program and that was that"

"You didn't blow whistles at Blume then?" Aiden asked

"Nope, not my style. Anyway, after I left I was soon contacted by the Chicago South Club, and more specifically, Lucky Quinn himself" Aiden's body seemed to tense at the name of the mob boss, and Kat remembered that he was one of the people who had helped in Lena's death "he had wanted me to help rig the mayor election to get Rushmore into office. Although not against my morals, I didn't particularly want any ties with the South Club, as they always ended badly. Well Quinn decided that that was a personal attack on him so he hired fixers to kill me. Only, I know Jordi, so I was fairly protected"

"So what happened?" Aiden asked. Kat was going to tell him the truth, but stopped herself. She knew the man would sympathise with her and see her in a different light, so she decided to lie

"Nothing, I just stayed low for a while and that was that" she said confidently. He just nodded and took the last swig of his beer. He looked at his empty bottle and decided that was an indication that he should get some sleep.

"Well, I'm off to bed, you should probably get some too" Aiden said, getting up and heading out

"Yeah yeah, I will" Kat waved him away "good night!" She called, he smiled and, without turning around, bid her a good night as well. Kat sighed and leant back on the wall behind the counter she had been sitting on and thought to herself

'What the hell have I just done?