A/N: Hey guys so I just wanted to give a little insight into this book.
Justice Stark is the younger sister of Tony Stark, she went missing when she was 12 and he was 17.  Ever since then she was gone completely never seen again. Or at least that's what Tony thought, in reality she was being trained, by a secret group who wanted her powers on their side. She complied for her safety but vowed that she would never do anything for them. They wanted her to kill people for the sake of their "cause" but she refused and for that she was punished, until she got stronger. Strong enough to escape and a couple hours later she was sitting in the living room in the Avengers tower.
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22 years ago

Tony was sitting on the couch watching over his five year old sister, he was sketching ideas for new designs that he was planning to show his father when he got back from his trip. He had left for the fifth time this month leaving him to watch over his sister because his mom would go out partying every night. He was only ten but he knew that meant she went out to meet some guy and always spent the night with him.

"Looney tunes look what I made" Justice said as she held up her drawing, it was of a car. She had called him looney tunes ever since she saw an episode, she only watched the one because after Harold found out he had beat Tony for letting her watch the "mindless crap".

"That looks great JuJu, keep up the good work" he smiled fondly at his sister, she was the only one keeping his ten year old self from going insane.

15 years ago

Tony was watching over his sister again, he had been his whole life. He was 17 now, and she was 12. She insisted she was old enough to look after herself, but Tony stayed with her anyway. He had endless time to make final adjustments to an invention he had been making with scraps he found around his dads lab. He tried to hide what he found but, on more than one occasion Harold had caught him and beat him because of it. If it weren't for this he would have finished a while ago, he just couldn't seem to find certain parts.

Justice was making them dinner, she was the only one who knew how to cook despite her being younger. She was stirring the sauce when her world went black.

Tony was minding his business when he heard a crash in the kitchen. He threw his screwdriver down and sprinted into the kitchen to find the back door kicked in and his sister missing. He called the police and searched everyday for the next five years trying to find her.
He started to loose his mind, he couldn't find the one person who kept him sane. Then eventually he moved on accepting the fact that she was probably dead. She was forever in his heart even when she wasn't in his head. It had been fifteen years since that day, and in those years his parents had been killed. Iron man was born, and the Avengers were formed, bringing with them Bucky the man who killed his parents. He managed to forgive him though, the man had been brain washed when he did it thanks to HYDRA.

Now
Tony was working in his lab listening to "You shook me all night long" by AC/DC. It was on full volume so he didn't hear when Steve walked into his lab.

"FRIDAY, can you turn the music down please" Steve asked the AI. The music turned down to a level where Tony could heat Steve. He rolled out from under his convertible.

"What d'ya want Steve" he asked wiping the grease off his hands onto his shirt.

"Dinners ready" he said simply.

"Good, I'm starving" he put down his tools and headed over to Steve.

"Aren't you gonna get changed first" Rogers asked when Tony told FRIDAY to take them to the communal floor.

"Why should I? I'm just going to come back down here after." He said turning to talk to Steve, he stepped out when the elevator doors opened. He smelt pizza. "I though you said you were making dinner?" He chuckled.

"We did, but then it burnt so we ordered pizza" He said as he too laughed.

"Fine by me" Tony walked into the kitchen and grabbed a plate from the cabinet and grabbed two slices of pizza. He snatched the last coke before Clint could grab it.

"Bitchhhh" Clint whined.

"Language"Steve reprimanded as he pulled another box of coke out from the pantry. He handed one to Clint.

"Thanks Cap" he said and walked into the living room. Tony followed watching as Clint sat down practically on top of Pietro. Wanda was at his feet on the floor talking with Natasha, Bruce was next to her looking like he wanted nothing more but to sleep. Thor was sitting with Sam layed across him as there was no room for him on the seat. Bucky was waiting for Steve to sit next to him, grabbing a dive off his plate when he did. Tony took his usual seat next to Stephen. Loki was sitting on one of the armchairs and he looked like he was wishing he could "die" again and appear some where else. He was 27, the youngest out of all of them, besides Peter but in
Loki's eyes Peter was just a little puppy so he didn't count.

"What're we watching then?" Cap asked as he reached over Bucky for the remote.

"Tony can you please change, you smell like gas" Clint said.

"Ugh fine, and I'll watch whatever" he got up and left, he stepped onto the elevator and headed towards his room. He took a really quick shower and slipped into his sweatpants and another black sleeveless t-shirt. He also made the decision to grab a blanket because he always got cold. He headed back downstairs to find that they had chosen a horror movie, most likely Natasha's choice.
He sat back down next to Stephen and layed the blanket over both of them. He fell asleep halfway through the movie with his head on Stephens shoulder.

When he woke up again he looked around the room to see that all of the other avengers were asleep. He quietly and gently slipped out from under Stephens arm and headed to his lab. He grabbed his tools and rolled back under his car, working for the rest of the night.
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