Disclaimer ~ I don't own Avatar: the Last Airbender or Harry Potter. Feel free to read my other fanfics.

Magic of Air
(Sisters of Air)

A soft wind blew around the outside of the cliff area the Airbenders lived in. The breeze brought the smell that came when autumn turned to winter and the young Airbenders were hoping for a snow fall so that they could get out of their lessons in order to play in the white drifts. All young Airbenders where mischievous and carefree as the way of the Airbenders was peaceful and fluid.

Two young female Airbenders sat in a room where a man was sketching something on paper. They leaned on either side of him, watching as his brush strokes took form on the paper. The device he was drawing was complex and was honestly something none of the Airbenders had ever seen before, but it still interested the girls who sat by his side.

"Is it true that you came from another world?" The older of the two girls suddenly asked, her dark hair falling in cascades around her shoulders. She reached her hand up to brush the hair away. "Is that why you don't have any bending powers?"

"If I hadn't come from another world, then why is it that your sister happens to have the color of hair she does. This hair color is rare in this world unless you've been out in the sun to long laboring away and your hair becomes bleached." The man suddenly stopped with his work and tapped the papers down, a smile on his face.

The older female glanced over at her younger sister. "I thought Lily had red hair because you were from the Fire Nation."

The man let out a laugh. "That is why I gave you names from my world rather then this one. They are names of flowers that don't exist in this world and as a scientist I miss greatly."

"Can you tell me the story about the machine you created again?" The smaller child smiled up at her father with a big grin on her face.

"The two of you need to be getting off to your lessons." The man frowned at the papers, his concentration elsewhere.

Petunia let out a deep breath. "Do you miss your world?"

"Yes." The man stated, going back to his work as the two girls headed off to their lessons. The two females walked away from the place. The older female happened to walk slowly while the other female performed various tricks in the air, enjoying her abilities to the fullest extent. She landed on her feet and looked back at her sister.

"Petunia?" Lily saw that her sister was worried about something and stopped short. "What ever is the matter?"

"Father misses his old world, his old home." The older female stated with a frown on her face.

"He's happy when we are around." The red head bounced a couple of times as she walked down the pathway.

"He's not happy Lily." Petunia let out a small sniff. "Father loves his old world much better then he loves our world. He'll never be happy unless he goes back to his own world, so we need to do something about it. Except, I don't know what we should do about it, truth be told."

"Do you know what the pictures father is always drawing consists of?" Lily stopped short and held her hands behind her back. Her sister only gave her a confused look. "It is of the device he made to send him here. We can build the machine to send him back and maybe just maybe we can go back and forth with him and he'll be happy and we'll be happy. Right?"

"But how are we going to get the pictures from him. He guards them well Lilly." The younger sister simply smiled at the older.

°O°

That night the two girls crept out of bed and headed to the place their father worked on the drawings. Their father was asleep by the downed embers and the papers were strewn all across the floor around him. A soft snore came from his mouth as he slept away and didn't come awake any time soon. The girls scooped up the papers and hurried away in order to read them.

I have been doing my research for a very long time. I happened to chance upon a library in this world that contained some of the information I needed. That also said, I was lucky to be able to get out of the library alive, as it isn't a place a human should go, particularly someone who has no bending ability what-so-ever. That said, what the paper told me bothered me and I decided it was best not to mess with the rifts between the two worlds.

There was a time that they were honestly one place, but something of great power sent this world away from our world. I also wonder if other places happen to exist that were sent away. The best way to put it is, it was a failed experiment and the times between our two worlds pass by differently then it does. It also has something to do with the spirit realm and the connection between the two isn't a good connection and should be avoided at all costs.

"I don't get this..." Petunia let out a deep sigh, shaking her head at the contents of the paper, wondering why it was such strange words going on. "I've heard of the spirit world but the adults prefer not to talk about it, so lets skip to something we know. These things are things we can make... but they are complex, right?"

"So we can't make them..." Lily let out a deep sigh. She then saw something on the page she was holding. "These words allow a Bender to cross over to the other world without... The word is smudged, but if we read these words."

Petunia suddenly grasped her young sister's shoulder and they read the words. They suddenly felt a pull around their belly area and they found themselves falling into another world, fast and hard. Of course, the paper turned to dust as they traveled through the world and the knowledge on the paper was completely lost.

Author's note – Lily and Petunia are Airbenders from a magical world that has been separated from Earth dimensionally. Lily is eventually the mother of Aang and Harry. I decided that Harry and Aang are twins but I felt that having two male twins with the personalities they both have felt unbalanced so I thought I'd balance it out by making one female. It feels more balanced with Aang being a female for this fanfic then Harry. I'm starting off with origins. :D