My first attempt at Ao no Exorcist. Hopefully it was good. Now if you don't like it don't read bit if you are reading this give me feedback. I'll update based on the feedback I get.

Summary: Six years old Rin found a demon summoning paper and books in Shiro's room. She accidently called out a king of hell while playing with it. Poor child is now stuck with a bunch of overgrown childish hell king popping up at odd times. What's more? They think she is their youngest sister and want to take her home. (smart fem Rin, protective brothers)

Disclaimer: If you recognise this I don't own it and never will I guess.

A six years old bored and curious Rin was a dangerous Rin just like any other six years old bored and curious kid. She could play with toys but they were all so childish and he was grown up now. She could go out and play in all the sunlight and blue sky but there was a teeny tiny problem with that plan. Well there were two but who was she to count?

First was that there was no one to play with. Yukio and Shiro were out, as they had been going for a week. A reward for Yukio being good or something. She could play with other monks but they were too busy to play anyway. She did not have any friends as all the children were too afraid of her to play with her. Hey, just because she always beat up the kids who picked on Yukio did not make her a demon. Well some boys thought she was cool for a girl but she did not want to play with them. Boys had cooties. Shiro had said so and she did not want to accidently receive them. The only one safe was Yukio, Shiro and the monks. But the point remained that people thought she was too violent to play with.

Well and that leads to her second problem. Because she beat up the kids who picked on Yukio she was grounded. The teacher had not even heard his side of the story and had just called up Shiro to talk about his problematic child. It was not her fault that she wanted to protect Yukio. No one was allowed to pick on her little brother, well no one but her.

And hence here she was, all alone in the place she called home bored out of her mind. She needed something to do before she did something which would lead to problems.

Where would be good place to go? Shiro had banned the Kitchen, ground, chapel and pretty much every every place she could think of. The only place he had not said anything about was her and Yukio's room, bathroom and Shiro's room.

Wait, Shiro's room. She had never been there before but Yukio had. She had always wondered what was so special in that room. She was the only one banned from entering the room. What was so different about her from the others? Was it because she was missing the thing Yukio had between his legs? Or because her hairs were longer? But the point remained that Shiro's room was a mystery to her and as she said she was curious and bored so what was better than going into Shiro's room and taking a look around. What could go wrong?

So the sole girl in the church made plans to enter her adopted father's room. It consisted of a very simple plan. Going up to the door and trying to open it. If it doesn't work them she would see. So she did as she planed. Went up to the door and tried to open it and to her surprise it opened. Maybe Shiro thought no one would come in while he was away?

Well good for her she got what she wanted. She got into Shiro's room. It was nothing special as she imagined. It pretty much consisted of a bed, a cupboard with clothes a desk and two bookshelves. The desk had a book and some paper. She looked at the paper and it had a weird designed. The book was thick with leather covering and cursive writing which was beautiful but difficult to read. She picked up the book and the pages to have a closer look.

"Rin"

Her name jolts her out of her thoughts and her observation and she accidently teared off a page She could not be caught here. Shiro had made certain that she not visit his room should the situation not be dire. He could have her hide if he ever found. Shiro must never find out, no one should. She had also ruined Shiro's book. She needed to hide it and fast.

So she did the only thing she felt she could so. She took the book and paper and took them to her room. Hopefully she would be able to hide them in her room successfully. If not? She did not even want to imagine the consequences should she fail.

She failed to notice a cut on her fingertip and the drop of blood that fell on the summoning paper.

...

Somehow the blue haired girl had successfully managed to take the books to her room without being caught. She really had devil's luck most of the time. It could explain how she always won in any game, cheating did not matter she still won.

Bet anyhow it was not what mattered now. No, she had to hide the book, but maybe she should read a bit about what the book was about? It couldn't hurt right? So she opened the book and at first it looked like it was not special. Just some designes it and she had seen them before, but where.

She willed herself not to think about it bit focus on what was written, which was proving to be quite difficult task but somehow she did it. It read Summoning a demon but demons were not real were they? They were just a fragment of one's imagination right? They were not an actual entity were they? Maybe this book was a prank bit somehow she could not shake the feeling that what the book said was true so she continued to read. A drop of blood and say what comes in mind huh? But she could not think of anything to say. But still she continued to read. It said to tear off the paper if the demon turned on you.

Well it was not like she could summon the demon, after all nothing came to her mind at all. She chuckled to herself.

"well it's not like the demon will appear if I say Gaya bless the soul who seeks your blessing. Protect thy child from the enemies something will happen" and she had only heard heard one of the priest recite it and it had stuck with her since then. She never believed it to do anything but she forgot that she had a devil's luck so it did work. She let out a scream when in front of her stood a tall man with green hairs and bangs under his eyes. He would have looked like a normal human, a perfectly normal one if not for some additional features.

He had a tail and pointed ears. And his eyes, those eyes were unearthly. He looked at her with those eyes and something shifted into her mind. It seemed so familiar to her but she so sure she had never seen those eyes before in her life. Then why? And then he spoke.

"You have father's flames. Let's go home little sis"

His voice brought her comfort even if it was in a monotone. She wanted to take his hand and she almost raised her hand to take it if she had not remembered a tiny detail.

He was a demon. And she did what anyone else in her place would have done. She screamed, loudly. So loud in fact that even the demon flinched. He took a step toward her and then she remembered tearing the paper would send him away.

Quickly she dashed toward the paper. The demon seeing him had most likely judged her intentions moved to stop her but as was mentioned she had devils luck she somehow managed to tear it just before the demon reached her. She realised that he was saying something but she could not understand it for the life of her. She was too numb.

Soon he disappeared and the priests choose the exact moment to enter the room. Thankfully they had not seen anything of the demon. She quickly kicked the book and the paper under the bed as to not alert them. If she told they would believe her to be crazy and maybe separate her from Yukio. She could not allow it. So she made an excuse for her scream, said she had a nightmare and in a way she had it. They seemingly bought it and went away.

She had to keep what happened to herself. She was not aware the even that will transpire because of this even, for if she did she would have never done that.

Now maybe she knew why they said that curiosity killed the kitty.

Done. Hopefully you'll like this. If not I'll not write more. Please give me feedback, I need it to continue to function.