Normal POV 

10 year later.....

At Japan, a teenage girl with blue eyes , was practicing her katana.

"Good morning, Blue." The Ancient one greeted her.

"Morning,uncle." Blue greeted back,still practicing her katana.

"Where is Violet?" He asked

"At the kitchen,preparing breakfast." Blue answered

"Then let us go to the kitchen." The Ancient one said and heading to the kitchen

Blue placed her katana at her scabbard,and followed the Ancient one. At the kitchen,Violet was preparing some pancakes. When Blue and The Ancient one arrived at the kitchen,she smiled and placed the pancakes on the table.

After breakfast~~~~~~~~~~~~

"Blue and violet,may I speak to you?" The Ancient one asked

The sisters nodded and sat in front of him. 

"I have trained you both for 10 years,and I think it's a perfect time to you go protecting people from danger. I want you two go to New York city and protect those people from Shredder. Shredder is a bad man who want to take the world all by himself. He has thousands ninja called the foot clan. "

"This is why I don't like human.." Blue growled.

"Do not misunderstanding them, Blue- san. Some human are very kind. Example, April O'Neil and Casey Jones." He said

"Do they protecting the city too?" Violet asked.

"Yes,along with their mutant friend and an old friend of mine. The turtles and their father, Master Splinter."

"Then,I think we should meet them.When do we have to go?" Blue asked

"Go pack your belongings,tomorrow you will go to New York City." The Ancient one answered

Blue and Violet get up and  bow at him.They went to their room to pack up things. While Blue was packing, a photo fell from her diary. It was her family's picture. She picked it up and placed the picture inside her locket,that belongs to her mother.She held it tightly.

"I.. I just can't trust human.. but.. these people,may be good." She said before packed her things back.

With Violet,in her room, she was packing some of her science things. She loves science. Just like her father. Then, a paper slide down from the table. She picked it up. It was her father secret formula to heal people. She folded it and held it tightly.

"If one of us get hurt.. this formula may help us.. I hope it can heal human too. " She said before packed her things back.

The next day~~~~~~~~

Blue and Violet  bow at The Ancient one. He nodded.

"You can find the turtles anywhere in New York. Mostly the sewer."He said

The girls nodded. They were about to go but, The Ancient one stop them for a moment.

"Remember,girls. Trusting others is a key to make friends. And love is a key to find happiness. They both exists." The Ancient one said.

"But for us, they do not." Blue said and walked with Violet while looking down. 

The Ancient one shake his head and smiled as he looked at the airport that send the girls to New york.

"Someday, they will learn." He said while stroked his beard.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

(At New York)

The sewer were quite as usual. Except..

"MIKEY!! GET BACK HERE!!" Raph yelled while chasing Mikey

"Try to catch me,Raphie~~!" Mikey teased his brother.

"Guys,stop.Master Splinter want to talk with us at he dojo." Leo demand.

All of them,went into the dojo.

"My sons, a friend of mine just send me a letter. " Master Splinter said and showed the letter.

"The Ancient one? What does he said?"leo asked

"He said,2 student of him, will come here and help us protecting the city" Master Splinter said

"Really?Who?" April asked while walking toward them.

"There 2 of them. They are teenager girl." He said

"Finally,some girls that I can spend my time with."April smirked

"What? You don't enjoy spending time with us?" Donnie asked with teasing tone

"I do,but at least I can spend my time with my kind. You know, female." April smiled

"But this girls may be not normal teenager." Master Splinter said

Them 5 shocked and looked at each other

"So they mutants?" Raph asked.

"No,they are the children of Vampires and Medusa." 

"What!? But that impossible!!I thought mythical creatures only a fairytale!!" Donnie exclaimed shockingly

"What are their names?" Leo asked

"The oldest name, Blue. And the youngest named Violet." Master Splinter said

"Woah! Weird names,but awesome!" Mikey shouted 

"Why are their name like that?" April asked.

"It because of their eyes colour.Now, we just have to wait for they to arrives." Master Splinter said

The turtles and April nodded and went outside of the dojo.

"I'll go prepare a glass of blood!" Mikey yelled and heading to the kitchen

"Wait,what!? Why do you want to prepare a glass of blood!?" Donnie asked

"Well,one of them is a vampire. Aren't vampire drink blood? " Mikey said

"Yeah,but-" leo cut off by Mikey yelling.

"Does anyone know what Medusa eat or drink!?!"

His brother could only sigh while April chuckled.