Note(s):

1) Any familiar or similar events in this story are not related to any real life people or events at all. They are purely coincidental.

2) Certain parts of this story might be confusing due to some characters' conflicting feelings within themselves.

3) Some of the characters' personalities are altered to match with the flow of this story. E.g. (Spoiler Alert!) Mikan is quite rebellious in the later part of this story, while Luna who will also appear in the later part of this story is a very loving and kind person.

4) Most of you might be wondering why the title is somewhat similar to my 'I Like You, Mikan-sensei' fanfic. Well, that is because this story is like a parallel story to it, except that this story has no school politics.

Disclaimer: I don't own either Gakuen Alice or its characters, except for this story plot.

I Like You, Natsume-oniisan

'I'm sorry. I can't make it for today's date because I have realised that I am in love with him. -Mikan'

"Oh, you came. It's a little unexpected though."

"Yeah," she gave him a smile which could make his heart melt anytime.

"What about your date?"

"What do you think?"

He shrugged cluelessly.

She took out a miniature tank, a precious old toy which held so many memories of their childhood and their hidden feelings for each other, and waved it in the air.

"Before you leave, let me tell you something."

He looked at her curiously as she brought the miniature tank close to her chest. Her gaze softened with tears in her eyes.

"I love you, Natsume."

Chapter 1: Siblings

It was a beautiful morning and the orphanage was bustling with different activities. Young children were playing in the small playground while slightly older kids playing chess or board games under the morning sun to keep themselves entertained. There were some children sitting at the side of the garden watching the others play or chatting among themselves. Either way, they were pretty much relaxed during the weekends.

The rattling of the old heavy gates disturbed the children and, all of them immediately stopped whatever they were doing and looked up. They saw a couple walking into the orphanage and closed the gates behind them. It was rare to see visitors or adults other than the nuns who looked after them. The children were afraid of the strangers so they quickly hurried off into the orphanage to hide themselves.

The couple entered into the orphanage and stood next to a counter which was near to the entrance. A nun strode to the counter and smiled gently at them.

"Good morning. Welcome to St. Mary Orphanage. What can I help you?"

The couple looked at each other and then the lady spoke, "Good morning. I'm Misaki Harada and the man next to me is my husband, Tsubasa Andou. Yesterday, we made a call about adopting a child from here so today we are choosing the child."

The nun recalled about their conversion over the phone the day before and immediately said, "Sure. Take your time to see which child you want to adopt. Do you want a girl or a boy?"

"I want a boy," Tsubasa replied. "Is there any boy here around the age of ten to twelve?"

"There are quite a few boys of these ages. Follow me and I will show them to you," the nun said warmly and led the couple the way to a small room.

The small room was filled with boys watching cartoon and some were making a ruckus in the room. Tsubasa flinched at the disorderly manner of the room but it could not be helped since he was here to adopt a child. Just then, a boy with raven hair caught his eye. That young lad was sitting at the side of the room writing something on a book. Tsubasa walked into the room, together with his wife Misaki, and approached that boy. He stooped to see what the boy was writing and he saw mathematical equations writing all over the place.

Curious, Tsubasa asked, "Hey, what are you doing? Today is Sunday. Aren't you off to play with your friends?"

The boy looked up and shook his head in disapproval.

"I am studying and I can't play either," he explained.

Misaki looked at the boy pitifully and asked, "Why is that so? Those boys don't include you in their fun?"

He shook his head again and answered with a small smile, "No, Ma'am. I want to study well and go to a very good middle school next year. Time is very precious."

Misaki was astounded by his response and almost immediately, she liked this boy as she could tell that this boy was very clever, well-organised and polite despite how young he was. He had a goal in his mind and was driven by it.

As if Tsubasa could read Misaki's mind, he turned to ask the nun who was behind them all these while, "I like this boy. What is his name?"

The nun seemed delighted and answered happily, "His name is Natsume Hyuuga. He is going to be twelve years old next month. He is always studying but of course, he knows how to balance with his studies and games well."

"So I assume that he has good time management," Tsubasa mused with a grin. "I've decided to adopt him. Is that alright, Misaki?"

Misaki nodded in agreement. The nun smiled while looking at the blushing Natsume who was not used to people complimenting him. She bent down and ruffled his hair affectionately.

"Good for you, Natsume-kun. You are given a home by these kind adults," she said and stood up. "Andou-san, please follow me to sign the papers. Natsume-kun, please pack up your belongings. Your new parents will pick you up after they are done."

Natsume nodded and scurried away into his bunk with his book clutching tightly in his hand. The adults walked in the counter and began their paper work. After signing the papers, they walked around the orphanage idly, waiting for Natsume to get ready with his stuffs.

While walking in the garden, they saw a young brunette watering the flowers. She was the only one there as most of the children had run and hiden themselves. The brunette walked clumsily to the next pot of flowers and watered them while humming a tune happily. Misaki found this girl adorable but she decided to ignore her instead.

Suddenly, the young girl tripped on a rock and fell down with a loud thud. Startled, Misaki ran towards her.

"Are you all right?" Misaki asked worriedly while trying to help the girl up.

The girl looked at Misaki with teary eyes but she immediately replaced her sad face with a large beam and said, "I'm fine!"

The girl stood up by herself but her left knee was bleeding. However, that girl moved forward to pick up her watering can which had flown away from her hands when she had tripped earlier.

Tsubasa stood next to Misaki who seemed to be carefully observing this girl and whispered, "Misaki, don't tell me you want this girl instead."

"I like her too. She is so adorable and strong. Girls like her will never give up easily in life. Tsubasa, would you mind if Natsume-kun has a younger sister?"

"I don't mind at all. After all, I think Natsume might need someone to help him to open up more. He seems like an introvert."

Misaki hugged Tsubasa and chirped, "Thank you! I have always wanted a girl!"

"If you want a girl, you should have said so."

"But you wanted a boy and I guess boys are not bad either. So I agreed with you."

"So now, let's talk to the nun again," Tsubasa suggested and both of them walked back into the orphanage.

The nun looked at the couple as they approached her.

"Sister, we would like to adopt one more child," Misaki said. "We just saw her in the garden watering some flowers. She has brown hair, slightly darker than mine."

"Oh! That girl is Mikan Sakura. She is only four years old. She loves to help me out in the orphanage. Do you really want her?"

"Yes," both of them replied.

The nun took out the papers to let them fill in while she went to look for Mikan. When she finally found her in the washroom cleaning up her own wound, she told that girl the good news but much to her dismay, the girl burst into tears instead.

"I don't want to leave here!" Mikan cried and swung her hands and legs about in the air.

She practically rolled on the floor, dismissing the fact that it was unhygienic to lay on the floor of a restroom.

The nun comforted Mikan, "Look here, Dear. Be a good girl and I am sure that your new parents will take you back here once in a while to visit us. I will give you some sweets if you promise me that you will go with your new parents."

Upon hearing the word 'sweets', Mikan became excited and stopped bawling, "Okay!"

Then, the little girl ran out of the restroom to pack her things too. The nun shook her head and chuckled to herself. She would definitely miss Mikan who was her favourite child as she was the only one who always helped her with gardening and simple chores like sweeping the floor.

Almost less than fifteen minutes, Mikan had already got ready with her little bag pack filled with her things and a teddy bear in her small hand. She skipped to the nun who was at the counter with the couple.

"Mikan-chan, these two lovely people will be your new parents from today onwards," the nun said as she took out a big packet of sweets and handed it to Mikan. "Be a good girl and listen to them, okay?"

Little Mikan cuddled her bear and the packet of sweets affectionately and chirped, "Okay!"

Mikan looked at Tsubasa and Misaki with a curious look on her face. She had forgotten who they were, though they did meet in the garden earlier on. Misaki smiled sweetly at Mikan and carried her up.

"Mikan-chan, please wait a moment. Your new older brother will appear anytime soon," Misaki whispered.

Just then, Natsume appeared with a large school bag and a few plastic bags dangling around the side of his bag.

He strode clumsily towards the counter and apologised, "Sorry, Sir and Ma'am. I had a lot of things to pack."

Tsubasa raised his eyebrows and laughed, "I can tell that. You look as if you are going for camping or to a war."

Mikan giggled and this caught Natsume's attention. He stared at her in surprise as he recognised her as the one who loved helping the nuns out everyday. They had not really talked to each other but only for that one time when Mikan volunteered to sweep the boys' bunk and he happened to be in there playing with his miniature tanks on his bed alone. While she was sweeping the floor, she had accidentally tripped over some boys' clothes which were lying on the floor and cried loudly. She had startled him and he had tried to comfort her until she stopped. Feeling guilty that his roommates were very irresponsible, he had helped her out to sweep their room clean and after that, she thanked him before running away. That incident had happened a year ago and he knew that Mikan had probably forgotten about it.

"Natsume, this girl will be your sister from now on," Tsubasa announced.

Natsume nodded as he somehow guessed that this couple had adopted two children from here and greeted Mikan with a small wave, "Hello! I'm Natsume."

"Hello, Onii-san! I'm Mikan!" she introduced herself excitedly.

The word 'onii-san' made him happy. It felt like he was going to have a great company from then on and he felt a little grown up with some responsibilities as an older brother. He gave her a small smile and she returned him an even larger beam which made her even more adorable than before.

Tsubasa helped to carry Natsume's bag and held onto Natsume's hand.

"Let's go to your new home," Tsubasa said and he led the new family to his car.

Mikan waved to the nun with tears in her eyes and got into the car with Natsume sitting beside her. She looked at the packet of sweets and hugged it again before opening them. Grabbing out a few sweets, she kindly gave one to Misaki and Tsubasa each. She handed one to Natsume too but he seemed to hesitate.

"Onii-san, don't you want any sweets?" Mikan asked sadly. "It's nice."

"It's yours, right? I shouldn't be taking it," Natsume replied and looked away.

Mikan pouted and brought the sweet closer to him.

"Then, it's yours now because I give it to you!" she said with another grin on her chubby face.

Misaki turned her head around and laughed, "Natsume-kun, just take it. She just wants to share her joy with us. Am I right, Mikan-chan?"

"Yes!" Mikan shouted happily.

Natsume stared at her small face and got amazed as to how fast this girl could change her mood. One moment, she looked as if she wanted to cry and the next moment, she was happy and excited to share her sweets with others. He chuckled and took the sweet from her hand.

"Thank you," he spoke softly and threw the sweet into his mouth.

Upon seeing him sucking on the sweet with a delighted face, she chirped, "You're welcome, Onii-san!"

Hi guys, thanks for reading 'I Like You, Natsume-oniisan'. Please review. I don't mind criticisms but they have to be constructive. A simple review is more than welcomed! I wish to get at least 5 reviews before continuing to the next chapter. Thank you! :)

I hope you can also read my other fanfics too! :D