First, I apologise to those, who are waiting for me to finish my other stories or for sequels. I just have no inspiration for those stories at the moment. I will try to finish them one day, just not sure when (A bad habit, I know. I swear it annoys me as much as it annoys my readers). So for now, I have decided to start this and hopefully, I will manage to finish this one. The updates might take some time depending on how much else I have to do.

Disclaimer: I do not own Ao no Exorcist. All characters (except of course for possible OCs) belong to Katō Kazue.

Warnings: This story will be Shima Renzō x female Okumura Rin. It might develop into a Shima brothers x Rin depending on what my mind decides to cook up. In this story Rin is smart and knows how to control her powers, so beware of possible Mary Sue! I'll try to avoid turning Rin into a Mary Sue, but I'm warning you anyway in case I fail. I don't really like Yukio, but I'll try to refrain from bashing him. Can't guarantee anything, though. Oh, and no Beta. And last, but not least, beware of OoC! So read at your own risk. If you don't like any of them, then press the back button. NOW!

"Speaking"
"Thoughts"
"Demon Telepathy"

Otherwise Enjoy!

Prologue

It was a rather chilly day in late March and the new school year was about to start. Well, the normal school year wouldn't start for another week, but for a few teenagers, the new school year was going to start today. Two of these teenagers were a pair of twins at the age of fifteen. The younger twin was already waiting outside with their adoptive father in front of the monastery that was their home.
"Why does Nī-san have to come along? I thought we agreed to keep this all a secret for his own safety", the twin voiced. This matter had been on his mind ever since their father had informed them, that his twin would be coming along to True Cross Academy. Their father, Fujimoto Shirō, let out a heavy sigh.
"It wasn't an easy decision, but with the current activity in this area, Rin's safety cannot be guaranteed anymore. It will be much safer at True Cross Academy", Shirō replied gripping the object in his left hand tighter that before and leaving what they both knew to be true unspoken. Sooner or later, the secret would be revealed and they would start to hunt Rin and when that time came, the only way for Rin to be prepared was to know what the threat was.

Meanwhile, the older twin was making the last preparations for their departure. She had just finished adjusting her short-haired wig. Grabbing a bunch of bandages, she started to tie down her breasts. They weren't small enough for her to be called flat chested, but they weren't big either. They matched her physic quiet well and were just the right size for bandaging. When her chest was bandaged she passed off as a boy with ease. Her tomboyish behaviour and slightly muscular build certainly helped.
At first, she was always confused why everyone was referring to her as boy. She never understood it and always tried to tell everyone that she was a girl. Even her own brother, their adoptive father and everyone else at the monastery referred to her as a boy. She would always cry because no one believed her. Most came to think of it as a way for her to gain attention and the people of the monastery simply got used to it.
Then she had made a discovery shortly after entering elementary school. She stopped trying to convince everyone that she was a girl after that. It was the turning point in her life and the time she started this pretence. All for the sake of her loved ones and partially for her own safety.
Shaking herself out of her thoughts, she finished wrapping her chest. After a final check to make sure that the bandages stayed where they were supposed to be, she dressed in a pair of washed-out jeans, a plain white T-shirt and a grey hoody. A short chant completed the illusion of her looking like an average fifteen-year-old boy. She slipped into her sneakers and shouldered her duffel bag. She took one last look at her bedroom before she made her way out.

Once Rin reached Shirō and Yukio, she noticed the object that was held by Shirō. She stiffened unnoticeably knowing what it meant. She took a deep breath before announcing her presence. Yukio merely nodded at her. Inwardly, Rin winced. When had they started to grow apart? It was probably around the time Yukio had started his exorcist training. Not that they knew that she knew. Shirō cleared his throat to gain the attention of his adoptive children.
"Rin, I want to give you this", Shirō said holding up the object in his hands. It was a long red cloth wrapped around whatever was inside. He carefully removed the cloth revealing a beautiful sword. Its scabbard was dark blue with silver ornaments. There was also a silver mark on it that strongly resembled a mirrored Om symbol in Siddham script. The hilt had the same dark blue with black diamonds lined up and a yellow string falling from its top.
"You must always carry this sword with you, but you also must never draw it. Do you understand?" Shirō said in a serious voice holding a deadly edge to it. Rin merely nodded, while her adoptive father placed the sword back into its cloth. Then he held it out for Rin to take. She slowly raised her right hand and grasped the sword feeling a familiar tingling go up her arm. Then she slung it over her shoulder.
"One last thing. You might not believe me know, but you will once you start cram school. Cram school is going to teach you how to be an exorcist and how to fight demons. Everyone here at the monastery is an exorcist. Your brother is as well. I can't tell you more than this at the moment and I hope you will never have to learn the truth", Shirō told her. Rin of course knew all that already, but she still put on a suspicious look, before shrugging her shoulders with a bored 'whatever'. Before any more conversation could take place, a pink car suddenly pulled up beside them. The door opened and a man wearing a very strange, pink outfit stepped out of the car.
"Good Morning everyone! How are you on this nice day?" the man shouted causing Rin to flinch slightly due to her enhanced hearing.
"Right on time, Mephisto. How are you?" Shirō greeted back.
"Splendid as always. I take it, that this young man is your other son?" Mephisto responded gazing at Rin.
"I'm Okumura Rin", Rin introduced herself with a small bow figuring she could let a bit of her true personality shine through.
"Rin, this is Mephisto Pheles, the principal of True Cross Academy. In public he goes by the name Johann Faust V, though", Shirō explained, "He will be your guardian while you're at True Cross Academy."
"Why don't you two get into the car? I need to talk with your father privately for a moment", Mephisto suggested, though it was more of an order. Rin just shrugged her shoulders and got into the car followed by Yukio, who cast a short glance back.

"So, how much have you told him?" Mephisto asked once he was sure that the twins were out of hearing range.
"I've told him about the existence of demons and exorcist, but he doesn't seem to believe me. I also explained to him that he must never draw the sword and never let it leave his side", Shirō replied with a small sigh. Mephisto nodded in understanding. They had both agreed, that, while it was better for him to get to know about the world of demons and exorcists, she shouldn't know about her own nature. At least not until they were sure she would be able to handle it mentally and physically.
"At the moment, he seems to be rather mild-tempered. Don't get me wrong, he is a good kid, kind-hearted and determined, but he also tends to be rash, short-tempered, immature and reckless. He gets into a lot of fights, too. Keep an eye on him", Shirō said.
"A little trouble-maker in that case", Mephisto chuckled. Shirō joined in not long afterwards. After it died down, they bid each other good-bye and Mephisto joined the two teenagers in the car.

"Well then, Okumura Rin-kun. Your father has explained the importance of that sword to you, no?" Mephisto broke the silence that had ruled in the car since they had departed. Rin merely nodded in response. The lack of sleep from last night was catching up with her.
"Good. He also told you about demons and exorcists?" asked Mephisto. He already knew the answer, but he wanted to know, if Rin had paid attention.
"As if something like that exists, but yeah, he told me", Rin grumbled. Mephisto merely chuckled, while Yukio continue to ignore them in favour of reading his book. Mephisto then tossed a box towards Rin, which she caught. She shot him a questioning look.
"It's your school uniform", Mephisto replied. Rin opened the box and found, to her relieve, that it was the male version of the uniform. She closed the box and let it rest on her lap. Then she returned her attention to Mephisto, who obviously had more to tell her. She was tossed another object. This time it was a key ring with two keys.
"Those keys are special keys that allow the crossing of space in an instant. The small key connects to your home and the big key will allow you to get to your cram school classes. They work on any door. Try it out once we reach the academy", Mephisto explained in a singsong voice. Rin merely shrugged again.
Then he went on explaining that Yukio was a teacher at cram school and various other things, like when cram classes took place and that she would attend normal high-school as well. Again, Rin merely shrugged. Her unusual behaviour was shrugged off by the other two as being overly tired, which she actually was. She didn't get a lot of sleep these past few days since Shirō had told her she would attend True Cross Academy together with Yukio.
"If there isn't anything else, I would like to catch up on some sleep", Rin grumbled putting an effort in showing her 'delinquent personality'. Without waiting for answer, she curled up on the long seat and let herself be engulfed by a half-asleep state.

Yahoo! Hope you enjoyed the first chapter. Constructive critique and reviews are always welcome. I have one question for you. I'm not sure if Rin should tell Mephisto or not and if she does, how much. I'm still trying to figure out an excuse for her to stay at the old dorm (of course without Yukio's supervision). Tell me what you think.

Tatsu out.