A/N: I got creative with Karai's birth records. I have no idea what a foreign birth certificate looks like. Or even how they document births in Japan. Since we do not no her actual birthday I just gave her mine for he hell of it. Although I was not born in 1996... I was born 14 years before that. And birthdays of my own parents... again not the correct years.

Just keep in mind with the year I choose for her birth year, the turtles never seem to age. They stay 15 no matter what year it is. Heck in a 2015 episode Mikey said he was 15... and the show had been on for some time now. To top it all off Casey mentions a year ago back in 2014 talking about the show down. So do not judge me by the year I have choosen for her birth.

A/N2: Thank you Dpfanboy for letting me know about my spelling error. I was unaware that I was spelling his name wrong. I corrected it in this chapter.

Karai paced around her room after hearing the lock be turned on the opposite side of the door, she knew that Shredder was mad, furious even. But she was just as angry when she pulled the sheet of paper from her belt. That was one thing she tucked away when Shredder startled her.

Opening the folded paper she saw the dark spots where it looked like smoke had once damaged it, on it, it read:

Mother: Tang Shen

DOB: 24 February 1967

Father: Hamato Yoshi

DOB: 24 July 1962

Family name: Hamato

DOB: 21 April 1996

Child's name: Hamato Miwa

Place of birth: Tokyo Japan

She let the paper drop to the ground, her brown eyes went wide, Hamato Yoshi is... my father? But how?

She looked down at the paper that still was face up on the ground, she read it over several times, looking for a typo. But there wasn't one. So if Shredder wasn't her father... how did? How did she come to live with him? What happened all those years ago?

She now had questions but no one to answer them. She looked around her darkened room for an exit, she had to get answers. If Shredder was not her father then... that means he. He lied to her. She had been living with the enemy. Her mother had died years ago, she had no mother to tell her everything would be alright.

She also realized that the turtles, were her brothers.

Karai bent down and picked up the dropped paper and held it up again. What if this was wrong? What if this Miwa wasn't me? What if it was truly a baby that died in the fire? Along with mom? Why am I thinking that this child is me?

With the new thought in mind she tried to think that she just over reacted, she hid the paper in the drawer of her desk by the window. So Yoshi and my mother were married? That still doesn't mean? Could it?

She walked into her bathroom in her room and took a long hot shower washing her makup off and getting freshened up. After toweling off she put on black jeans, with a dark gray nearly black tee shirt. Pulling out a black hoody out of her closet she set out to escape out her bedroom window.

Opening it up she used her grappeling hook that she hid behind her desk and slipped out the window and into the night like a shadow.

Little did she know she set off the silent alarm that was triggered to go off if a window was opened...

Tiger Claw flew through the air with his jet-pack, he had just received word from Shredder that Karai had run off. He looked to the ground but saw nothing there, he wondered if she would be out looking for the turtles as well?

Karai saw the over size cat flying through the air, she wondered how this cat could be the knew second in command?

Hours earlier...

Shredder had just arrived back from his trip with his new worrier in toe, he saw all his henchman but did not see his daughter. Xever looked at the new addition and said.

"So? There is a new mutant in town eh?"

Shredder stood tall at his throne and said.

"Yes Xever, this is Tiger Claw, he is the most feared assasin in all of Asia. He is my knew second in command."

Bradford and Xever began to snicker at each other, Shredder narrowed his eyes and asked hotly.

"What is so funny?"

Bradford spoke first.

"Karai is going to be pissed that she has to step down."

Shredder told him quickly.

"She has failed me too many times, I want results, she is too caught up in the turtles being close to her age. She toys with them, but never delivers. She has allowed them to escape multiple times, she had the red turtle where she could easily have beat him but let him escape. Well no more, we are not here to play games. Vengance will be mine, and I do not care who gets hurt in the proccess."

Bradford and Xever looked at each other then back to Shredder, Bradford asked hesatantly.

"So what are your plans for Karai?"

Shredder looked at them and said seriously.

"She will get what's coming to her, I am not done yet."

Again the two looked at each other before becoming silent as they watched their master walk back to his throne. Sitting down in his seat he said.

"Now, leave me. And do not come back with out Shen! And that blasted turtle!"

Bradford looked at Xever as they exited the thrown room, they didn't say anything until they left the room. Once out of ear shot Xever asked.

"What does he want that stupid turtle for?"

Bradford told him honestly.

"Something to do with mutagen. But how does something that has lived in the sewers all its life know how to make that stuff?"

Xever shrugged as they gathered footbots and headed out of the building.

Empty ally not far from the turtle's normal manhole cover...

Karai hid behind the dumpster as she saw Tiger Claw fly over head again, she wondered why she was letting those documents bother her so much. But that photo... she could not help but notice how happy they looked in the picture. She had to find answers.

As soon as Tiger Claw was out of sight she lifted the cover off and slipped into the sewers, she knew the turtles lived some where down here but she didn't know where. If she looked long enough she would find them.

She thought about something first... she patted down her body and felt something solid in her jacket pocket. Putting her hand in she lifted out a small device with a blinking red light, a tracker. She cursed her self for allowing Shredder to slip a tracking device on her. Taking it in her grip she held it tight till her knuckles were tight. Closing her eyes she remembered what he was going to do to her, he was going to throw her in the dungeon, like yesterdays trash... she couldn't believe that some one who has raised her for 16 years could do that to her... her fights with the turtles were becoming less amusing, she found her self forcing her self to think of them as enemies. But she just couldn't...

She raised her arm back and looked down at the swirling water below, she threw the device into the water and ran as fast as she could away from the area. She knew the lair had to be some where.

It felt like an eternity when she came across some old subway tracks.

"Their Shellraiser runs on the tracks."

She remembered from the time Leo saved her, she followed them until she saw a light up ahead, she saw a mass of steps then the turnstile. One wouldn't work so she jumped over it.

She hid when she heard some one coming.

"Leo I ain't mad no more just leave me the hell alone!"

She peaked out and saw Raph and Leo arguing, seeing the frustration lines on Leo's face made her wonder what she just walked in on.

Leo rubbed the top of his head in frustration and spun around.

"Raph, I know what happened earlier was frustaiting but even you have to talk to some one about it."

Raph stepped into Leo's space and got in his face.

"Ya want me ta be happy bout the fact that Splinter couldn't stay human for long? Or the fact that Shen is crying her eyes out right now in the kitchen because this whole damn things upset her! If ya ask me your being insensetive!"

Leo tilted his head back and snapped it back forward and said.

"Raph, come on, would you for once get your head outta your ass? I do care about them, for the love of everything they are our parents! Of course I am worried about Shen, she lost her husband and child 16 years ago! And now she found her husband alive! Mutated, but alive none the less!"

Karai listened in, her eyes went wide when she heard them mention Shen, were they talking about... but... it's not possible. She is dead...

She was snapped out of her thoughts by a new voice, a feminin one coming into the room.

"Boys, what have I told you about fighting?"

She leaned around the edge of the wall and saw her, the woman from the picture... only she was older now, slimmer. Karai felt tears come to her eyes, she knew this was her mother.

Leo and Raph stopped their argument when Shen walked in, her face was stained from tears as she spoke to them. They both bowed their heads and Raph said to her.

"Sorry. We are just upset because of what happened earlier."

Shen put a hand on his shoulder and told him gently.

"I know Raphael, I am too. Do you know where Donatello is? He is not in his lab?"

Leo told her with his head still down, in a soft voice.

"He went to his room, Splinter's in there talking to him now... he told me to go talk to Mikey but... Mikey's door is locked, and he won't open it."

Shen nodded and then said.

"Ok, please do not fight any more today boys. I do not think it is going to help any one right..."

She paused, from where the three were standing she could hear a faint gasp. Leo and Raph looked around alert when Shen stopped talking. Shen put her hand on Raph's shoulder and said.

"Get your father, we have an intruder."

Leo spun on his heal and headed to his brother's room in a hurry. Not bothering to knock he opened the door to find his father and brother sitting down talking.

"Sorry to barge in, but we have an intruder."

Splinter was on his feet in a heartbeat and followed his eldest son out of Donnie's room and to the living room. They all looked at Raphael who had Karai by the arm holding her still as she struggled in panic of being caught by her 'enemies'.

"Sensei look what I found."

Karai struggled in Raphael's grip, he held her tighter but didn't try too hard to get free.

"Wait Raphael listen to me! Please. All of you!"

Splinter had a deep frown on his face as he walked up to Raphael and Karai.

"How did you find this place?"

When Karai didn't answer right away Raphael shook her arm roughly and said.

"You answer him when he asks you a question!"

Shen could see how genuinely scared the girl was and said to Raphael.

"Raphael, let her go, she will not escape."

Raph looked between Karai and Shen and let go of Karai but steped closer when she moved away.

Shen walked over to the young girl and asked.

"Lets start over, what is your name?"

Karai looked up at her, she could feel tears forming in her eyes again as she answered.

"Oroku Karai... or at least that is what I THOUGHT my name was... now I'm not so sure."

Leonardo had never heard their enemy speak in this tone before, never seen her so upset or scared, something must have happened for her to go out looking for them.

"Karai, what happened? Why do you doubt your self? Why did you come looking for us down here?"

Karai put her hands nervously behind her back and swayed slightly as she spoke to them.

"Shredder... he, found a new second in command... he was going to throw me into the dungeon... right now he is probably looking for me."

Raph raised his brow and commented.

"So you ran away because you were replaced? Why?"

Karai looked into his green eyes and said.

"Because I failed... I failed him and he knew it..."

Shen put her hand on the young girl's shoulder and asked gently.

"How did you fail him?"

She looked down at the floor, she was silent for several moments before telling them.

"Because... I... have more honor then he does... when um... I would fight the turtles... I never once defeated them... I may win a battle yes, but never would I hurt them bad enough to leave lasting damage. He knew I went easy on them too many times... he punished me for not capturing Raphael when they rescued you, Donatello and Michelangelo... I didn't try very hard to defeat him... I more or less slowed him down. Shredder knew... and even now he has Tiger Claw, his new worrier, out looking for you all. Shredder had planted a tracking device on me, I found it quite a ways back in my pocket and threw it into the sewer water."

Donnie looked at her and could tell she was telling them the truth, he asked.

"So why us? Why did you come looking?"

Karai looked into his eyes next and said.

"I needed answers... to my questions... there was no way I could go to Shredder."

Splinter frowned and stepped forward, he placed his hands on her shoulders making her look up at him.

"What answers Karai?"

She spoke softly with tears in her eyes as she spoke to him.

"I-I found some papers in his chamber... one was my birth certificate... attached to it was a photo, I left the paper behind when I dropped it back in my room. But I have the photo."

She reached into her pocket and lifted out a photo that made Splinter gasp, he took it from her with shaking hands and looked between the photo and Karai.

Leo saw his father's knees buckle, he quickly got Donnie's desk chair and put it under his father before he fell.

Splinter had tears in his eyes as his knees gave out and he sat down hard on the computer chair, he looked over at Shen and said to her in a hoarse voice.

"I-it's her... Miwa..."

With shaking hands he handed the photo over to his wife, who had tears of her own in her eyes. She put a hand over her mouth and chocked a sob before saying.

"She's alive..."