A/N: My very first Harry Potter fanfic:) I hope you guys will enjoy it!

Disclaimer: My name isn't J.K Rowling... And that means I don't own Harry Potter and its characters, but I do own Sheena (Christina) Miller.

This story take place during Harry's and his friends' sixth year. (Just pretend that the sixth book doesn't exist! I maybe take some stuff from the sixth book, but I'm not sure yet.)

Harry Potter and the Son of Satan

Chapter one: At the Hogwarts express, part one

She was late again, and she couldn't understand why. She hadn't overslept or even showered slowly. 'Maybe it's my makeup that takes me long ti-' Her thoughts was cut off by her stressed mother.

"Hurry up Sheena!"

"I'm coming!"she said and ran down the stairs.

The trunk was already carried out to the car by Sheena's father Sam. He sat in the car and waited for the rest of the family Miller. 'What takes so long?' he wondered in his own thoughts. He drummed at the steering wheel and started to feel a little bit stressed. Sam was used to it, because every time they should go somewhere his daughter was late. Most of the time they arrived in time, because he always tried to have pretty much margin. This time Sheena was later than usual and now he really was worried. They couldn't come late this time. Not the first day at this new school.

Sam sighed in relief when his wife, Annie, and his daughter enter the car.

Sheena's dad drove as fast as possible. The atmosphere in the car was awkward. Sheena was nervous because this term she should start in a new school, Hogwarts. She and her parents had moved to London from Ireland because of her father's new job. He was a muggle and Annie, Sheena's mother, was a witch. At first Sheena had tried to stop her parents, she didn't want to move and leave all of her friends. When she realized that she couldn't change her parents' mind, it was just for her to like the situation and try to do the best of it. She and her friends had decided to keep the contact. Now she was really nervous and curious about the new school and was excited to meet new friends.

Annie glanced at the clock every minute. She sighed loudly. It wasn't much time left now.

"I can walk by myself" Sheena heard a handsome boy with messy black hair say to a man in a black costume as she and her parents rushed down to the platform at King Cross.

The boy looked oddly familiar to her, but she couldn't remember why.

Sheena waited till the red-haired family had gone trough the platform before she and her parents did the same.

It was a lot of people at the platform 9 3/4. Parents and students.

"Good bye!" Annie said as she gave her daughter a hug. "Take care."

"Bye mom. You'll write, right?"

"Of course. And if it's possible we call you too." Sheena nodded.

It was always hard for Sheena to say good bye to her parents when she should leave them in the beginning of the fall. Now it was harder than usual. Everything was new and different, and she hadn't any friends here yet.

"Bye daddy" she said and hugged him.

The girl stepped into the Hogwarts express.

"They are friends of mine" Harry said coldly to the girl who just had said that he didn't need to sit with Neville and Luna in a very condescending tune in her voice.

The girl looked surprised and left the coupe.

"People expect you have cooler friends than us." Luna said, frankly as usual.

"You guys are cool" Harry said and quickly changed the topic to the results of the examen he and Neville had last year. But he didn't really listen to Neville's answer.

"Um, excuse me, can I sit here with you?" Three pair of eyes turned to the door where a blonde girl stood.

"Sure, sit down." Luna said.

"Thanks" the girl said and smiled.

Harry noticed that her eyes werebright blue and when she smiled they glistened very much. He thought they were beautiful. The smile was very pretty too.

The girl hadshoulder-length blonde hair and was dressed in a pair of pipe-jeans and a grey sweater. She was slender and the pipe-jeans looked very good at her.

"My name is Sheena, or my real name is Christina, but no one ever calls me that." Sheena said shyly.

"I'm Harry and this is Luna (he pointed at the girl with ugly glasses, which made her look like an owl) and this is Neville (he pointed at the boy)"

"Nice to meet you all."

The blond girl took one more step into the coupe. She was just about to sit down as the train suddenly slowed down and she fell onto the raven-haired boy (A/N 1).

"Sorry!" Sheena said and blushed very much and flew up. Then she noticed his scar and before he had time to say anything she shouted:

"You're Harry Potter! Why didn't you tell me?"

"Because people gets crazy when I do." he said half joking half serious and smiled when he saw her face.

'Damn! I fell on him and then acted like an idiot! What will he think about me now?' Sheena thought.

"Don't worry, you didn't act that crazy"

Sheena looked into the boy's green eyes and saw that he meant what he just said. She really liked him. Not because he was Harry Potter, she just liked the way he acted and how he was. Actually Harry reminded her of her friend Brian.

"Sorry" she said again and sat down.

"Don't think about it."

Normally Sheena was a little bit shy, but she didn't think it was hard to speak with Harry and his friend. She thought Luna was a little weird, but it didn't bother her. Harry told her about Hogwarts and the different houses in the school. She hoped the hat would choose Gryffindor or Rawenclaw. Sheena told Harry, Luna and Neville about her life. And they told her about their lives. The train journey weas long and that ended in that she got to know pretty much about her new friends. She liked them.

Harry heard a tune and recognized it as one he had heard at radio when Dudley had listned.

Hear the sound of the falling rain

coming down like an ar...(2)

The tune was cut off when Sheena answered her cell phone.

"Hi Brian!"

Luna looked confused when she saw the cell and Neville's eyes widened. They didn't know what the thing in the blonde girl's hand was. Harry did know what it was and just listenedcuriously to her conversation, but tried to hide it. She laughed much, he noticed. Soon he was lost in his own thoughts again. But woke up as he heard Sheena say something about him.

"Yeah. And can you believe it, I'm sitting in the same coupe as Harry Potter" Harry tried to hide the smile he had on his lips.

"Never mind! Call me later. Bye!"

"Sorry, I just wanted to brag that I sit in the same coupe as a celebrity, but I had nothing for it. He doesn't know who you are." She smiled a little. "He's a muggle" she added. That explained a lot, because it was none in the whole wizard world who didn't know who the famous Harry Potter was.

"W-w-what's that?" Neville asked anxiously and pointed at Sheena's cell.

"Um...It-"

Sheena was cut off by Hermione who just opened the door and stepped into the coupe. "It's a cell phone. Muggles use them to talk to people that is far away from them. It very practical if you can't use magic." Neville still looked confused.

"I'm Hermione."

"I understood that. Harry told me about you and Ron. I'm Sheena." The girls smiled at each other. "He said you are very intelligent"

Hermione blushed a little, but looked very happy.

"Um, we don't have electricity at Hogwarts. So how are you going to load your phone?"

"Oh, crap! I hoped Hogwarts would have electricity. That means I can't use my computer either, or ipod."

"No, I know, it's pretty annoying actually. I miss music very much. Was it very important?"

"That would have made it easier for me to keep the contact with my friends."

Hermione nodded. "Are you new here?"

"Yeah, I moved to London because of my dad's new job. He's a muggle and my mom is a witch. I'm from Ireland. The head master in my school in Ireland was half muggle and he installed electricity to the whole school."

"Wow, cool. Both of my parents are muggles."

Hermione thought it was easy to talk to Sheena and they quickly became good friends. They were a lot like each other, both were smart and had good grades and they knew much about the muggle life. They talked about nothing and everything; music, movies, gorgeous actors and many more things.

Harry felt a little lonely as he saw how Sheena and Hermione talked to each other. 'Wow, they are made for each other (A/N: as friends, not as lovers)! I'm not jealous, right?'.

"I will kill that arrogant bi-!" Ron shouted as he opened the coupe door but stopped in the middle of the sentence when he saw the new girl.

"Hi, I'm Ron."

"Hi. Sheena" she smiled.

Harry had told Sheena about Ron and Hermione and was glad to meet them when they came back from the prefect vehicle. She liked Hermione at the first second. Hermione felt the same.

A/N: 1: Actually that happened me once. It was SO embarrassing! And my friends just laughed...

2: I love that song! It's Holiday with Green Day.

So, what do you think? Is it even worth I continue with this fic? Hope so! Review :)