This is my first ever story. Currently it's a crossover between Blue Exorcist, Naruto, Fairy Tale, Harry Potter, NCIS, and the Avengers. The main will be Blue Exorcist with brief mentions of the other fandoms, besides certain characters. I will also be messing with the timelines of the other fandoms. Helpful criticism is always welcome.

Beta-ed by the wonderful yamiyugi23. Edited and uploaded 3-19-16

Disclaimer: I do not own any of these fandoms, I do not have any rights to these fandoms and I don't make any money from writing these stories. The only thing I do own is the plot idea.

'Thoughts'

"Normal Speaking"

Rin communicating with demons

Chapter 1

"Do you agree with the terms, Rin?" Mephisto purred out.

"Yes." I gritted out. I was in deep pain both physically and emotional. I catalogued all of my injuries. My left wrist was broken and a gunshot wound to my right flank. Overall not bad for a fight against a Middle First Class Exorcist and a Naberius.

"If you're sure-"

"Shut up and do it Mephisto!"

"Very well then. Ein, zwei, drei!" And with a snap of his fingers I was sent spiralling into the past.

-Earlier that day-

It was a few days after the failure of a camping trip that had outed me to the rest of the Exwires as a half-demon. They ignored me at best and harassed and bullied me at worst. I had just walked into Yukio's classroom, with Kurikara swing on my back, and already Bon was sneering at me and Konekomaru was just trembling from looking in my direction. I could just tell that my day was going to get worse. At least Shima, Izumo, and Shiemi just ignored me.

"What do you want, demon? Come to play exorcist? Maybe collect some info for the rest of you monsters?" Bon sneered out.

"P-p-p-lease Bon, be careful! He's the son of Satan, he's probably already plotting how to kill you." stuttered out Konekomaru, as he eyed me. Before I could say anything, not that much would make this better in their eyes, Yukio walked in.

"Good afternoon class. Okumura-kun, though it is a surprise to see you on time for once, why are you not in your seat?" Yukio coldly asked me. Ever since the camping trip Yukio had done nothing but give me the cold shoulder. Yukio steadily believed that I should have just let him and Shura deal with Amaimon.

"I'm going now, Yukio." I said. I slowly ambled my way to the back of the room where there was an empty table. As I sat down, Yukio called the class to attention.

"Class, today we're having a field trip. We'll be going Osaka, due to a demon outbreak. The Exorcist there are being over-run and need help." Yukio announced.

As everyone started to gather to the front, Yukio turned to me. "Okumura-kun, you are to keep your flames under control by order of the Vatican. If you cannot, I am to contain you by any means necessary. Do you understand?" Yukio ordered.

I rolled my eyes. "Is there any point in me coming then?" As it stood, I hadn't gotten a new sword to use yet seeing how I wasn't permitted to use Kurikara freely. And I wasn't good enough to use any other route but fighting with a sword.

"I am to watch you in case of you losing control."

"Soooo, that means I am doing nothing then." I grumbled. It's a wonder I haven't diagnosed with ADD or ADHD because I just couldn't stay still and concentrate. I had to be moving, it's why I always fell asleep in class.

Yukio ignored me and continued to the front of the group. "Okay class. I will open the door to Osaka and everyone will go when I call your names, with me being last." Yukio walked to the door and inserted his key to the Osaka temple. He opened the door then stood to the side.

"First is Moriyama-san and Kamiki-san," as Yukio spoke Shiemi and Izumo paired together and went through the door, "next is Suguro-san and Miwa-san," together they sneered at me as they walked past and through the door, "following that is Shima-san and Takara-san." As they walked through the door Yukio motioned for me to go next. Figures he would pair us off this way, I mean who would want to work with a demon, never mind that fact that I'm also human.

I walk out of the door to see the rest of the group off to one side as other Exorcists run around panicking. I hear Yukio close the door from behind me. "What's going on Yukio? Why are they panicking?" But Yukio just walks past me to the group. I sigh and walk with him.

As I walk up to the rest of them I hear Yukio take control of the situation. "Exorcist Middle 2nd Class Eiichi, what is the situation?" he barks out to the panicked exorcists. Slowly the exorcists calmed and welcome the class.

"Middle 1st Class Okumura, for the past week we have been attacked every night by Naberiuses and Ghouls, from dusk 'till dawn with no break. Most of the exorcists posted here are in our infirmary with a range of injuries. It will take at least five days for the less injured to heal. At this time we don't have enough people to fill all of the required posts." Eiichi told us. Yukio nodded and then turned to assess the rest of us.

"Suguro-san, Miwa-san, Shima-san, and Kamiki-san help fill in the positions needed. Takara-san, Moriyama-san go help in the infirmary." ordered Yukio. The rest nodded and went to do as ordered. "Okumura-kun you'll be staying with me."

"Hai, Yukio." As I spoke Yukio started to walk away. I sighed and followed. That's how we spent the rest of day, walking around the base making sure everything was secured and prepared for the attack. Slowly dusk started to approach, and with it you could feel the atmosphere getting heavier with the oncoming attack.

Yukio and I were outside checking on the guard posts when the call came of the oncoming demons. "Okumura-kun, please get back and stay out of the way. Everyone else be at the ready!" Yukio called out. I sighed and started to move back, I knew this was going to happen. I wasn't going to be able to do anything because the Vatican didn't trust me to use my flames, or you know, a weapon at all.

I rolled my eyes as I walked back to the building. As I walked I felt Kurikara sway with my stride. But everything came rolling to a stop when I felt Kurikara yanked out of its sheath. I spun around, not paying any attention to the flames that erupted around me, to see it in the grip of a Naberius. The Naberius gave a smirk and ran back to the battle. "Motherfucker, Yukio is going to kill me!" I swore under my breath as I gave chase.

At that moment that Yukio looked back. At first he looked shocked, then angry. "Of course you lost your sword. God damn it Rin! Do I have to do everything?" Yukio roared out. I winced as I started to come up to his position. "Go back to the base. I'll be back with your sword soon."

"I'll be fine Yukio, pay attention to your fight." I shouted as I ran past. "Rin!" I ignored his shouts as I started to gain on the Naberius. "Give me back my sword, you asshole!" I launched myself when I was within arm reach. I was soon wrestling Kurikara out of its grasp. With my sword finally back in my hands, I stabbed the Naberius through the its heart.

The Naberius was slowly turning to dust as I started to stand. I was happy that I at least had a chance to help before my thoughts came to a screeching halt as searing pain appeared in my right flank. I looked down to see a bullet wound in my side. I fell to my knees as the pain started to register in my mind. What had happened? And more importantly, who had shot me? But as I thought about it I noticed that my flames started to recede by themselves. 'I am to contain you by any means necessary'... Yukio words floated through my thoughts.

But Yukio is my twin! He wouldn't shot me! I looked up at Yukio to reassure myself that Yukio wasn't even looking in my direction. But I what I saw was Yukio lowering his gun from my direction with a sneer on his face. My mind went blank, my brother SHOT me! Something in me snapped at that thought.

I do everything in my power to protect these people, to prove to them that I wasn't a monster, and this is how they repay me? By only seeing terms, not the person, and by hurting me physically or otherwise. Well fuck this shit! If this is what I should expect for the rest of my life, count me out! I would rather live with demons than exorcists at this point.

I grabbed Kurikara and slid it into its sheath, and then forced myself to stand and ignore the pain. Once I had steadied myself, I started on my way to the base which had the nearest door. Thankfully everyone was paying more attention to the slowly dwindling demons, then the one half-demon that they had betrayed. Eventually I managed to reach the door and I smashed my key to the dorms into the lock.

As I tumbled out, I managed to grab hold of the wall to prevent myself from falling. I figured I had about an hour at max before the exorcists noticed I was missing, so I had to move fast. I stumble my way to the dorm room. I grabbed a gym bag and started to stuff it with clothes and things I would miss. As I quickly pack I called for my cat sith familiar, Kuro, "Kuro! Kuro, come quick!".

Just as I finished packing, Kuro appeared.

What is it Rin? Kuro asked as he hopped up to the bed.

"I've had enough Kuro. Yukio shot me for getting Kurikara back from a Naberius. I've decided if this is how they're going to treat me, then I'm not going to stay to put up with it. Will you come with me, Kuro?" My emotions came spilling out of me.

What?! Yukio shot you? How could he betray both Shiro and you like that! Kuro ranted. And don't be silly, of course I'm coming with you!.

"Well, that's a worry off my mind. Thank you Kuro." I sighed in relief. "Is there anything that you want from the dorm before we leave?" I hurriedly asked Kuro.

No-pe! Everything I need is you. All set then? Kuro asked.

"Yep. Hop in the bag and we can get going."

By now the bullet wound had slowly started to heal, though it still caused pain. It seems that Yukio used one of his blessed bullets. I winced as I pulled on the muscle wrong. That was going to take a while to heal. I sighed and started on my walk out of True Cross Town. This trip was going to take a while.

After finally reaching the edge of town, I started to slow out of my fast paced walk. I turned a corner and as I walked towards the border. I had just walked past an alley when a gloved hand shot out and dragged me into the alley. "Ahhh!" Was all I could get out before the gloved hand covered my mouth.

"Ah-ah-ah, Rin-kun! Sneaking out, of campus already?" Mephisto appeared before. My breath hitched and I prepared to struggle. Mephisto's hands clamped down all the harder on my shoulder and arm. 'Shit! I'm so done for!' ran through my head many times. Then for no reason Mephisto released me.

"Now, just what are you trying to do Rin-kun?" Mephisto purred as he got in my face.

"I'm leaving, Mephisto, but don't worry, I'm still going to kick Satan's ass. Just not with the help of the Order. I've had enough of back-stabbing." I spat out, the words leaving a bitter taste in my mouth. As I look at Mephisto's face, I noticed a frown before he smoothed out his face.

"And just what are you talking about Rin-kun?" Mephisto said.

"You should know. Yukio shot me, when he deemed it necessary to control me when a demon stole Kurikara from me." I sneered out. Mephisto gave a bigger frown, before giving me a very assessing look.

"I'm going to offer you a very interesting deal, Okumura-kun, and I would suggest you take." Mephisto said.

"And what's so interesting about this deal, Mephisto?" I quipped back.

"What if I told you that I had a way for you to fix this, to say, have a do-over? What if I could make you six again? Give you a chance to save Shiro-kun, and change Yukio's opinion of you? And all just for killing Satan? Hmmmm? Doesn't that sound like a good deal?" Mephisto's smooth voice rumbled out.

"And what would it cost me?" It sounded so good to me. To good. But if only...

"Something's would change, nothing to important, and you would have to kill Satan." Mephisto's voice coaxed out. "And in return I will send you back in time to your six year old body, send back both Kuro and Kurikara of this time, and give a key that will bring you into a dimension for training each time you use the key. But at 9pm on December 21, just before you turn 16 everyone will regain their memories until that point. At that time you must also defeat Satan, in order to make good on your side of the deal. Sound fair?"

I thought long and hard about Mephisto's offer. I would gain so much from the deal, but I got the feeling that he wasn't telling me everything. But did it out weight the terms of the deal? In the end I could come up with only one answer, "Deal."

"Perfect! Now just to be formal... Do you agree to the terms of the deal Rin?" Mephisto purred, with a smirk on his lips.

"Yes." I gritted out. I was in deep pain both physically and emotional. I catalogued all of my injuries. My left wrist was broken and a gunshot wound to my right flank. Overall not bad for a fight against a Middle First Class Exorcist and a Naberius.

"If you're sure-"

"Shut up and do it Mephisto!"

"Very well then. Ein, zwei, drei!" And with a snap of his fingers I was sent spiralling into the past.

To Be Continued...

Next chapter, Rin finds out what Mephisto was keeping from him! Again, all helpful criticism is welcomed and appreciated! Please review and let me know how I did for my first story! Now I'm off to bed. Goodnight