A/N: Espeon804 here with another great fanfic!

…

What?

You didn't expect this?

Well… it's true, I'm a huge fan of Pokémon and the Dragon Ball series but… Blue Exorcist is a good show too.

So, I've been going through Fanfiction and Wattpad… not either website has (maybe rarely, but I never saw one) a fanfic like the one I'm about to show you. I wouldn't be doing this if it was common.

Well, anyway, this is my FIRST Blue Exorcist fanfic, so it may not be as great as my DBZ ones…

Hey. I get better.

So… LISTEN!

I watched the whole season through the English Dub. Occasionally, I check it out in the original Japanese to compare the voices. (English doesn't put in as much effort with the acting it seems. :P)

So basically, this is based from the anime. That should clarify a few things.

Key:

"Talking"

'Thinking'

"Telepathy"

DISCLAIMER: I DO NOT OWN Blue Exorcist (Ao no Exorcist)

Kazue Kato owns it all!

- Part 1: Hold composure-

"Alright class, that should be… just about it." A book on a desk is shut lightly, and the hand rests on the surface. The other hand rises to the bridge of the owner's nose to push the glasses back in place to readjust them. The pair of blue eyes blink. "You may be dismissed."

Though he says this, the class doesn't budge. Pairs of eyes blink at him, a few would shift and turn to the books as they begun to gather the stacks in their arms.

The teacher frowns somewhat. This is the third time they were rather hesitant to leave. He steps from behind his desk. "I would appreciate it if one of you would explain why you're not so urgent to leave the class as usual?" His eyes shift to the shy student in the class. "Shiemi?"

The girl blinks as if she was snapped out of a trance. "Huh?" She takes notice on the slight annoyed look on the teacher's face. "Oh, sorry. So sorry!" She quickly apologizes. "It's just that… ever since you uh…"

A teen with black mohawk hair with a scuf of yellow shrugs. "Nothing bad. You just have a look we're not used to. You know, pointed ears… the fangs…"

"Bon." A pink haired teen says the name as if to warn him.

Bon simply turns away. "Well, someone had to tell him. Okumura keeps giving us that suspicious look. Keeping him in the dark isn't bright idea." He sticks a thumb at the black haired teen behind him. "Now if it was Rin, it would be normal."

Rin frowns. "I walked in here looking like that. Of course it's normal to you." He crosses his arms behind his head and leans against his chair. "Yukio had been just a Human until recently. Looks like he was wrong when he said he couldn't inherit Satan's powers."

"Rin." Yukio slides his book to the side. "Alright. It's been complicated to grasp. Sometimes I don't understand myself. But, we can't dwell on that. Everyone, please make your ways to your dorms."

There is small hesitation, but the students rise and make their leave. The only one who doesn't budge is Rin.

Yukio gathers his things and tuck them neatly under his arm and walks towards the door. Just as his hand lands on the handle, he turns his head. "Are you planning to spend the night in here?"

Rin jumps from his seat. The entire desk nearly falls over. "You're going straight home, right? I got the perfect meal planned in my head already!" He taps his head with a finger and grins at the last note.

"Unfortunately, I have a meeting to attend." Yukio's reply seems to startle Rin somewhat. He turns the knob and opens the door, but it is shut surprisingly by his brother. "Rin, this is no time for games."

"But, yesterday you said you would come straight to the dorm. I thought you had no paperwork!" Rin seems strongly upset about this change of events.

Yukio opens the door again. "I know, but some things just don't go as planned. I'll see you at dusk. Just make sure you get your homework done." He walks out and the door shuts, leaving Rin to himself.

"Tch. Homework. Is that all he cares about? Damn homework." Rin adjusts his bag on his shoulder and opens the door. His head is hung low somewhat as the door shuts behind him. "I doubt he can even function without a day of work." He makes his way down the hall, appearing drained from the day of school already. "How long until the next break?"

He begins to pass a door but, he doesn't make it through since it swings open suddenly and smacks right on his face. Rin falls on his back with his hands covering his nose.

"Isn't it a marvelous day today? Now that the school day is done, perhaps I can-" The one behind the door peeks out. His eyes shift down and spot the teen on the ground. "Well, hello Rin. Enjoying yourself there?"

Rin blinks and recognizes the voice immediately. He sits up quickly. "Mephisto?!"

Mephisto grins. "I was just stopping by to your classroom to speak with your brother."

"He left for a meeting." Rin says with some frustration. He gets to his feet and sighs. "Why can't he just take a break for once?"

"The both of you are different. It's expected." Mephisto makes his way down the hall. "Perhaps your brother is more concerned with himself. He's been a bit unusual since that day you two saved the world. Perhaps he's not getting use to the fact that he has blue flames as well?"

Rin didn't think of that. "That could be it, but I don't see how paperwork can take his mind off that." He waves as he takes his leave. "I'll see you."

As soon as he steps outside. He takes a deep breathe. He'll take this small moment since he probably won't enjoy it for the rest of the day. He heads for his dorm, but he stops. The atmosphere around him feels slightly different. He could be imaging things, but it is bothering him for some reason.

"All right! Who's there?! Show yourself?!"

He probably looks stupid right now. Screaming at a wall doesn't make him feel any less comfortable.

He shrugs and moves on, but he doesn't lower his guard in case something is a threat. But nothing has happened since that day Satan was defeated. In fact, not one demon has dared to attack him or anyone else. Perhaps because since the gate was destroyed, they have no way of entering the world.

Or maybe, they are afraid.

The thought makes him chuckle. That might just be it.

-0000-

As soon as he arrived home, a small black cat runs at him and jumps to his arms.

"Rin! You're back!" The two-tailed feline puts happily.

"Yeah. You must be hungry?" Rin sets his things down and heads for the kitchen with the cat close behind him. "Kuro?"

Kuro nods. "What about Yukio?"

Rin frowns at the mentioned name. "He won't be home for a few hours."

"I thought he said he would be back with you?"

"That's what I said. It seems that his paperwork is more important for right now."

-0000-

The class is silent as Yukio looks through the pages of his books for a lecture. Rin appears to be half sleep, but when Bon slams his fist on the desk, he snaps wide awake.

"If you fail a test, you're going to complain about it, and it'll be your fault." Bon warns him.

The pink haired teen listens to the lecture a bit more, and he suddenly stands.

"Renzo?" Yukio addresses the pink haired teen.

Shima shakes his head. "I don't know. It's been so peaceful lately… it just doesn't feel right since we're so used to demons attacking 24/7 you know?"

"Well, I guess you have a point there." A younger-looking teen with shaved head and glasses states.

"What makes you say that?" Izumo, the purple-haired girl scoffs. "Miss the action or something?"

Konekomaru, the shaved teen, shrugs. "It's good to have peaceful days like this. We can finally rest, but we can't lower our guard too much."

"Like if a demon would bother us? Yeah, right." Rin leans against his chair, but he leans too far. He flails his arms and the chair tilts back and falls.

"That's what happens when you lower your guard." Shima laughs.

Rin simply huffs and stands up while quickly placing the desk back in place. "Yeah, yeah."

There's a small knock on the door.

"Come in." Yukio's eyes doesn't leave the book he observes.

Stepping inside is a woman who is lightly dressed… well, very lightly. She easily recognized by this, and her tattoos engraved on her chest and stomach.

"What is she doing here?" Izumo sighs with irritation in her tone.

"Well, that's a rude way to say "hello"." The woman chuckles. "But, I can't blame ya. I came here uninvited."

"What is it, Shura?" Yukio asks as his eyes finally shift to her. He shuts his book lightly.

"I came here because of strange activity that's been reported. I figured you would want to know." She says this as if she's teasing him, but Yukio simply brushes it aside.

"I'll keep that in mind."

"Hey." Rin sits up quickly. "What's going on? Don't tell me that demons somehow came around here." He says it as a joke.

"Laid back, aren't you kid?" Shura chuckles. "I wouldn't get too comfortable." She heads for the door and waves with her attention to the exist. "Enjoy your boring lecture. If I stay in here another minute, I might end up sleeping on the job!" She laughs as Yukio frowns at her.

"Some things just never change with her." He shakes his head and opens his book. "Now… Where was I?" He finds the page he was looking for and takes a breath.

The building suddenly shakes, and Yukio is nearly knocked from his feet.

"The hell?!" Rin sits up quickly. "What are they doing?!"

The door opens again and Shura stands at the doorway. "Yeah… this is serious." She walks forward and snatches Yukio by the wrist and leads him outside. "Come on!"

"Hey! Wait a minute!" Renzo springs from his seat and the building shakes again. "Came someone explain what is going on?!"

"Stay in here for the for the time being!" Yukio orders quickly. He looks at his eager brother. "Rin."

"You're kidding!" Rin crosses his arms. There could be an earthquake, but his mind tells him otherwise. He watches the door shut and he turns to the rest of the class.

"What now?"

"It might be an earthquake." Konekomaru suggests, but there's a tone of uncertainty in his voice.

Yukio and Shura stand right outside the door. It had been shut since the discussion is serious and can't disturb the class… At least that it what Yukio hopes is the reason he was dragged out.

"We got a problem. Big." Shura explains to Yukio. "I have no idea how this is possible, but looks like we got demons trying to break into the school."

"What? I thought they can't even enter through here since the gate was destroyed!"

Another voice answers for Shura. "That's what everyone thought, but perhaps they found another way through."

Yukio and Shura turn to the source of the voice. Mephisto casually walks down the hall as if nothing is happening. "They are holding a grudge. Perhaps a powerful demon arrived and broke through the barriers?"

"What?!"

The school rattles again.

"Oh, I think he made it through." Mephisto says as he watches a light bulb fall and shatter on the ground. "Perhaps this is a good time to test out your new abilities again?"

Yukio shakes his head. "I don't want to jump that far just yet." He watches the Demon of Time walk off. "Where are you going?"

"I suggest you get your students out of here before things go out of hand." Mephisto turns and makes his way down another hall.

Shura growls with clenched fists. "I swear, there will be a day I'll punch his-"

"Shura."

She turns to the teen. "What?" She takes notice on the serious look on his face. Her mood settles. "Oh, right. I think I know who this is. He's probably the only one who could do this without a problem."

Yukio is shocked to hear this. "Wait… you know?!"

"I recognize that demon anywhere. He's a huge threat! We never faced anything like this one!" Shura sounds frustrated about this. "If only he showed his face sooner, then maybe he wouldn't be such a problem!"

"And he's in the school?!" Yukio glances around quickly. "He easily broke through the barriers! This demon must be in an entirely different level!" He waddles as the floor shakes. "I need to hurry and get back!"

Shura extends her and at him as hs runs for his classroom. "Wait a minute! Don't run off just yet! That demon has brought more than we think it did!"

"What did you say?!"

Suddenly, the walls break down as a swarm of small demons fly through and enter the school halls.

Yukio has to slam his feet on the ground to stop his sprinting. Several goblins run through the halls. "I don't understand! What is going on here?!"

"He's brought a huge burden! That's for sure!" Shura reaches for her chest and says a small chant to pull her weapon out. Drawing a drop of blood from her fingertip, she smears it across the blade. "Snake Fang!" With a powerful swing, an air blade slashes through the goblins and kills them off. Just as they die, more pour in. "Damn. Looks like we have to play exterminator for a while."

Yukio draws out a pair of guns from under his jacket, and he fires them rapidly at the low-level demons. He takes them down with skill and great accuracy, but it seems never-ending as more swarms pour in. He pulls the triggers and only one gun fires. He swiftly unclips one case and thrusts the gun down towards his belt, clipping on a fresh new round and fires once more.

Another swarm flies in from the opposite end of the hall. He throws a hand to that direction and now he fires at both ends of the hall. Shura is busy slashing her way through.

The swarms seem to thicken, and Yukio has one gun knocked aside. Just as he spins around to retrieve it, goblins slam on to him in groups and he is knocked down. He drops his other gun as he throws a few of the goblins off him, only for more to jump on him.

Shura swats the goblins in her way aside as she rushes over to the exorcist. "Yukio! Are you alright?! Get up, will ya?!" She slashes the goblins surrounding Yukio, and prepares to take down the ones covering him in a pile. "Is it me, or are these things harder to deal with than usual?"

A demon lunges from behind her and attempts to chomp her down. She stabs through it's chest and throws it aside. "Hellhounds? Why send the low-level demons after us?"

"I… wish I know the answer to that!" Yukio snatches the gun near him from the ground and fires at the goblins on top of him. The weapon slips from his hand as he is yanked back. It falls under him, and he is forced to the ground.

"They are very stubborn! What are they trying to do?!" Shura rushes towards the goblins and kills them off quickly. She glares at the demons piling on top of Yukio. "Hey!"

He can't breathe. Not like this. They still pile on top of him. His gun is crushed underneath him. He can't reach for it. 'Where is Rin?! He normally would barge around by now!' It's not that he relies on him much, but it's unusual that his twin brother hasn't shown just yet even after he was told to stay put. His thoughts are interrupted as the air is crushed out of him. He screams from sudden surprise as his foot is chomped on and pulled back. He can't move at all now, and he's growing frustrated.

He growls under his breath as he tries to push himself up. He is shoved back down, and his last straw had been pulled.

"Damn it. They just don't quit!" Shura impales another hellhound and runs towards the demon pile. Just as she swings her sword back to prepare to slash them off, blue flames explode and ignite the demons in a huge burst. She is forced to jump back. "The hell?!" She watches the goblins who are lucky not not get scorched flee from the flames. She looks back at where the pile use to be, and Yukio is on his knees, breathing heavily.

Yukio's ears have grown sharp and long, and his fangs have grown in length. Blue flames are lit in many places, shrinking until they are small.

"He can do that too…?" This might be hard to take in. Rin is able to summon his power without the sword at times, but he never saw Yukio do it. Then again, he did seemed to be in stress. "Damn it, Yukio! Calm yourself down! We don't want anyone seeing you like this!" If it was his class, that might be a small awkward issue… but if anyone else saw, that might be a huge problem. Most already know of Rin's abilities, but Yukio's a whole other story.

Yukio stares at the palms of his hands which hold small blue embers. He balls them into fists and takes a deep breath. This never happened before. He lost his cool for a split second, and he changed appearance suddenly. "I'm going to have to be more careful…"

For a moment, he is on his hands and knees. He picks up the sound of footsteps. He slowly turns his head and sees his twin brother running alongside Shiemi and Bon. They heard the commotion and must had decided to investigate.

"Everything okay over here? I thought I heard shouting…" Rin's voice trails off. He blinks at his brother. "Yukio?"

"What the hell?" Bon tries to wrap his mind around what he sees. "What happened? Why are you…?"

"To be honest, I don't know myself. I was overwhelmed I guess, and the power just came out." Yukio stands and sighs. His body manages to revert to his usual appearance. He takes his gun that Rin picks up for him. "Thanks."

"Do you know what's going on?" Bon asks.

"That, I wish I know." Yukio frowns. "For some odd reason, the demons that are usually easy to take care off are harder to hit, and they have small bursts of sudden strength. Where this is coming from… I don't know."

The school shakes violently once more. Dust from the ceiling rains down.

"Looks like we might get answers." Bon mutters.

The walls from the left side rip apart. A giant hand snatches Rin by the leg and yanks him out the building. The teen yells in surprise.

"Rin!" Yukio didn't see that coming. The others didn't either, but he won't stand around. He grabs his firearms and makes a dash through the hole that leads outside. He fires his guns and the bullets don't seem to hurt the giant creature. His feet slam from concrete to grass as he enters a field further from the cram school.

"What is going on?" Shura hears footsteps and turns around. The rest of the class has arrived.

Izumo is the first to speak up. "Can someone explain what is going on?!"

Shura shrugs. "We are just as confused as you are. However, I have a feeling whoever is behind all this is why these small demons are harder to take down. They are after Rin." She steps through the new doorway. "I'm going after it. What you guys do is your decision to make."

As she leaves, Shiemi seems to be worried with thought.

Bon steps forward. "I'm going after it. Whatever it could be, it's going to pay for what it did to this school!" He runs after Shura, and the rest of the class follow.

Just as they arrive at a field, they stop all together at the sight of a 10 foot beast holding Rin by the ankle upside down. It has the appearance of a humanoid goat when it comes to the body. The head is basically a monsterized goat beast.

"Wh-what is that?!" Konekomaru yelps in surprise.

Shura and Yukio stare at the beast in shock. Never have they seen anything like it before.

"Just great. There's always something!" Shura frowns. "They might as well send in everything at this rate!"

"I don't like this." Yukio studies the demon standing before them. "I've seen pictures of that demon before. Some say it resembles Satan… but this thing here… I would say it's the the closest you could get… "

The demon notices the presence of the exwires and exorcist. He turns and faces them all. "The True Cross Academy. These are the students and teachers standing before me?"

"Who are you?!" Yukio demands for answers. "What do you want with him?!"

"I came here to bring forth vengeance. This boy's victory was a mere fluke!" The goat's eyes narrow. "It seems that he certainly wasn't alone. From your appearance, you are his brother. So, it's true when they say you might just have such power? Don't lie, I can see your ears and fangs from where I stand."

Vines explode from the ground and wrap around the demon's feet. He is pulled back and his arm is yanked back as well. He is forced to free Rin to tear the vines off him.

"Good job, Nee!" Shiemi praises the Greenman who happily squeals the word it was addressed by.

The demon growls and rips free from the rest of the vines. "Stay out of the business!" He raises his arm, and bullets bounce off of it. He glares at the twin responsible.

"Don't you try to hurt them!" Yukio shouts at the beast.

"Time to get this show on the road!" Rin pulls his draws his Kouma Sword, and blue flames engulf him quickly as his ears and fangs stretch and are pointed more. His tail whips behind him as he rushes forward.

Yukio expected the weapon to draw out his power as well, but nothing happened with him. He isn't bothered by it. He simply continues with his firing and changing rounds when needed. "Hey! I need everyone to put effort into this! Don't get too caught up, but taking this demon alone is dangerous!"

Shura frowns. "Don't get too focused with this demon. The other ones are still out there! Keep your guard in place!"

"Right! I-I hear you!" Renzo replies. He turns to his friends. "Hey, Bon?"

"Yeah. I'm on it!" Bon nods.

"Hah!" The demon swats Rin and Yukio aside. His tail beats on the ground as the fraternal twins stand. "Go ahead and try all you want. As long as I'm here, I have influence over every demon you see!"

Rin sprints forward with a swing of his sword, the beast steps back but is still grazed. He dives down as his brother begins rapid fire. The bullets batter all over the demon who grows more irritated with every hit he takes.

"Anything yet?!" Yukio calls back to his students.

"We're still trying to find the right verse!" Konekomaru announces over the words Bon is reciting. "I don't know if any would work against something like this!"

"Just keep trying!" Yukio ducks in time to avoid a row of claws that attempt to scratch him. He fires his guns and more bullets sting the demon.

The goat demon growls and steps forward. "You're getting on my nerves!" His tail whips out and a smacks Yukio from the ground. The exorcist rolls across the field before lying still.

Rin stares at his fallen brother for a second before glaring at the demon. "That does it! You're dead!" He rushes forward and dodges the demon's attacks before lunging at him. His attack is easily dodged, and the demon punches him down. Rin falls and lifts his head up, only for a foot to stomp on his stomach. His scream is mixed with a painful gasp as a mouthful of saliva flies from his mouth. His weapon clatters on the ground. Small embers are still ablaze. Rin reaches for it, but the demon kicks it back with his other foot, and it slides back into the case, forcing Rin to revert back to normal form.

"That was only entertaining for a moment. It all ends so soon it seems." The demon kicks Rin like a ball. "It's not a good feeling to be easily overpowered!"

The others can't do much but watch and hope that this would end somehow. A mericial would be nice, but from the way things are looking, even that might not be much help anyway. They hope that Bon would come across the right verse to at least wound this demon.

Konekomaru and Shima refuses to watch the Okumura brothers suffering much longer. They run for the beast, demanding for the violence to stop.

Yukio fears for them. He had made the mistake of asking for some assistance. The demon is far too dangerous. He tries to warn them. "No! Stay away from him! He'll kill you!"

"We won't stay back again! We can't lose you!" Konekomaru protests.

The demon huffs through his nose. "Stay out the way!" He swings his arm and knock the pair aside. He extends his arm to reach for Konekomaru, but bullets batter all over his arm. He draws his arm back and glares at Yukio who constantly fires his guns.

"I wouldn't go too far if I were you." The demon warns him as he rises his foot. "I will crush your brother until he's nothing more than a bloody pulp!"

Rin struggles underneath him. "Whoever said I would give up against you so easily?" Hs takes the opportunity and scatters from under the foot. He dives at the ground as the demon attempts to hit him. As he slides, he reaches for the Kouma Sword.

A heavy tail smacks it aside, and now it's too far to reach. Rin rolls to the side to avoid being stomped on. "Alright big guy. You asked for it!" He charges forward and dodges most of the sent punches. His feet leave the ground as he jumps and his hands grasp around the pair of horns on the demon's head. The demon tries to throw him off, but he hangs on. "This is your chance, everyone!"

Izumo is one of the first to react. Taking out the pair of small drawn circles on squares of paper, she begins to say her usual chant. The word "humbly" doesn't come out her mouth as a sudden force blows her off her feet and tear the pair of papers to shreds.

"This guy… is too much for us!" Konekomaru gulps.

The demon snarls and throws his head back. Rin is catapulted off of him and spirals to the ground.

Renzo is quick to react by picking up the Kurikara from the ground. He rushes towards Rin and gives the weapon a good toss. "Okumura!"

"Shima?" Rin quickly turns and sees the weapon propelling towards him. He catches it just as the beast turns to him. He prepares to draw the weapon out, and the demon lashes for him, delaying the action. He jumps up and runs. Claws stab through his back, and he falls face first. Hs quickly rolls and his left side is stabbed through. He screams in pain.

Yukio sprints towards the demon. "Rin!" He aims the pair of guns at the demon's head. A pair of goblins dive from nowhere and snatch the weapons from his hands. "What the?!"

"You can't be serious!" Shura scolds him as she reaches his side. "I told you to not lower your guard by being so focused with this demon! The others are still around!"

Izumo reaches him quickly with a round of bullets in her hands. "This is all I could retrieve." As the bullets are taken from her hand, she shakes her head. "Get your head out the clouds! There has to be some other way!"

It's unlike him to forget about the other small issues. It's understanding. His brother is in a situation that needs to be prevented from going on any further. "Release him!" He throws his demand at the demon, but all it does is make him laugh.

"You expect me to just let him go? You must be blind to the fact that I am here to avenge my master by slaughtering you both!"

Yukio's fingers curl as they appear to be trying to form fists. His teeth are clenched as he tries to think of a way to pass this situation and help his wounded brother out. Though Rin's wounds will heal quickly, it's only a matter of time until the demon wounds him too far. Seeing the demon slash at his brother again hurts him. "Stop THIS!"

Izumo and Shura step back startled seeing sudden small flames burst around Yukio when he screamed the demand.

The demon's eyes shift and observes Yukio. "What's this? The blue flames… you have them too? Interesting." A second passes and he roars with laughter. "What are you going to do with those?! Make a barbecue?!"

The flames disappear and Yukio steps back. He glances at his hands for a second before looking back at the demon. 'He doesn't know that the power has grown. It's not a good sign if these flames come out without the sword drawn. This is the second time it happened.' He takes a breath to calm down. "I'm giving you a warning. Release him and leave!"

"I don't take orders from the likes of you!" The demon replies rudely. "However, perhaps I can toy with a little?" He drops Rin to the ground and slowly walks towards Yukio.

"What are you doing standing there for?!" Shura yells at him. "Get out of there!"

"Just do me a favor and make sure the demons don't do anything to the school and further. Keep my students out of this!"

"You must be out of your mind!"

"Just listen for once!" Yukio snaps for a second. The tone in his voice makes few of his students shut their mouths to keep their own arguments sealed.

Shura would argue further, but changing Yukio's mind is almost impossible once he sticks to a decision. "Getting through to you is just as hard with Rin." She grabs Izumo's arm to force her back while she pushes the rest of the class back. "You heard the man. Stay back unless you're needed."

"Is he serious about this?!" Bon hates this all together. "Why is he just standing there?!"

Yukio stays firm in his place. His hand rises and tugs on his jacket. "None of us are through just yet! You've made a mistake coming here!"

The demon roars and charges for him. He nearly falls as his ankle is snatched and pulled back by the older twin. He kicks his leg back and throws Rin off him and punches him midair.

"Rin!"

Perhaps he made a mistake.

A/N: Finally finish!

Huh. Not too bad for a first Blue Exorcist fic.

Well, I did my best to stay in character… but I felt I slipped now and then. Still, this is okay. I made sure I had all the information right.

The goat demon is a known demon. Google it. :P

Well, the second part of this is coming soon. This is a three-part fic!

REVIEW! REVIEW!

To be continued to Part 2!