I know there are lots of fics like this, but I wanted to try writing one. Not based on any other fic, sorry if it seems like another you've read.

Chapter 1 - Alone

A little girl, about two years old, ran into an alley, breathing hard and sobbing in fear. Heavy footsteps thudded behind her. Thump-thump. Thump-thump. She skidded around a corner and stopped before a high wall. She looked around for a hiding spot, but before she could find one, a five people ran into the alley after her. "Don't hurt me!" The little girl screamed.

"We won't..if you come with us." One of her pursuers said.

"But...I don't want to..." the little girl whispered.

"What was that?" One of the men growled. "Hand over the bag, ya little brat!"

"Leave me alone!" The little girl yelled. "HELP ME!"

"Leave her alone," someone said. A figure landed in front of the little girl.

"Forget the brat," the leader of the thugs shouted. "Let's get out of here!"

The figure turned to the little girl, and she saw that he was a large mutant rat, wearing a robe. Being very little, she accepted it without question. "Are you alright?" The rat asked.

"Yes," she sniffled. "Who are you?" She clutched her bag closer.

"I am called Splinter. Do you want me to take you home?" He held out a hand to the little girl to help her stand. She took it.

"Don't have a home anymore," she muttered. "Ran away."

"You can come with me all right?" Splinter asked. He picked her up carefully. She snuggled into his chest gratefully.

"Thank you." Then she fell asleep.

When Splinter reached the lair, he laid the little girl very gently on the couch. "Boys, come and meet your sister!" He called.

Four small green turtles walked over. "What's that?" The one in the orange mask asked curiously.

"She is a human, Michelangelo. She does not have a home, so she will be your sister," Splinter said.

The red masked one frowned. "But I thought humans were bad," he said.

"We'll make her be a good human!" The blue masked one said excitedly.

"Yes, Leonardo." Splinter said. The little girl woke up and looked around.

"Where am I?" She asked. "Who you?"

"You are in our home, child. They are my sons. Will you tell us your name?" Splinter asked.

"Don't have a name," the girl said.

"Very well. I shall call you...Kameko."

"Kameko," the girl repeated.

"Yes, child. Now, you look tired. I will find you a room." Splinter took her to a room next to Mikey's. He found a few soft blankets and arranged them into a neat for her. "I will find you a proper bed tomorrow. Sleep well, Kameko."

For those of you who are wondering, Kameko is a Japanese name, and means "turtle child". I named her that because of her connection with the turtles. Please review and tell me what you thought!