Simulacrum

In which it appears that there may be another demon with the ability to control Satan's blue flames— beware the simulacrum. Male!OC centric.

Rating: T+ for gore and profanity

Genre: Supernatural, Drama, and Adventure

A/N: ^^' So this idea wouldn't let me sleep. It came about when I realized that there aren't too many OC stories in the AnE fandom that are pairing-less (yes, I am at fault for this too) or that include male OC's. Thus, the protagonist (or should I say antagonist?) of this fic was born. I've never written from a male's perspective, but this should prove to be an excellent exercise to improve my writing. I just hope you guys enjoy the story! There should definitely be character development for both the exwires and the OC, so yah :P

Disclaimer: Still don't own Blue Exorcist.

Chapter 1- Prologue: Train from Hell

.

.

Generally, riding the Phantom Train was prohibited. The transportation demons were under Samael's domain and the Time and Space king didn't want droves of low-level scum polluting the easiest access to Assiah for sentient demons. When one was already in possession of a human host, traveling through the Gehenna Gate or other similarly unsightly means risked the chance of damaging the host body itself. With good, long-term hosts becoming more difficult to find, it made the chore of keeping the body healthy even more pertinent. Thus, with about a century of pleading and bargaining, I was one of the few demons that my cousin allowed full access of the trains.

It was definitely worth the effort as I recalled a time where Amaimon went the regular route through the Gehenna Gate and found himself without his eyes, an arm, and tongue. It had taken a full week for him to heal from the injuries, as damage wrought from anything born of Satan was akin to poison; it slowed the healing process of any demon, regardless of their strength or domain. It was with these thoughts swirling in my head that I felt a short tremor traverse the interior of the luxury passenger car, signaling that the demon had woke.

The metal contraption lurched forward with a vicious hiss, cogs roaring to life under the miasmic, ever static clouds of Gehenna. Any remaining spirits that had survived the trip to the world of demons floated hopelessly in the air, unable to leave the confines of the train. I swatted at the nearest sphere of light in annoyance, the clingy ghost tugging on my dark tunic. It left me immediately after, swaying back to the other undead passengers who were stuck in their shared eternal purgatory— that is, until the train decided to devour them.

I continued to sit passively as the Phantom Train steamed forward, following a series of invisible tracks until it came to the tangible border between Gehenna and Assiah. The passenger car bumbled forward, pressing against the swirling vortex until it gave way, allowing us passage into the land of humans. It was when I felt the steady roll of wooden train tracks under me that I let go of the metal rail, taking in the feats of human technology. It had only been a few years since my last stay in Assiah, but the towering buildings and speeding cars brought a smile to my face. How cute; the humans were still pretending to be civilized! Yet, death and destruction were commonplace— almost as common as the ravaged plains and empty abysses of Gehenna were to violence.

Though, to be fair, there was something almost… whimsical with humans and what they created. How the only limit to their genius was what their brains could imagine. I blame my relation to Samael, but even I had found a niche of my own. I pulled said contraption from my pocket, unraveling the white cords with a grimace. He was right; I really needed to invest in a cord protector that kept the wires from tangling. Even as a demon, the mess of wires was a pain to unwind.

Yes, music was my addiction, if you want to call it that. It was something Gehenna lacked— if demonic screams and howls did not list highly on your choice of music. The language didn't matter; being centuries old allowed me to adapt to human languages fairly easily. I loved almost all types of music, from simple drum beats to heavily arranged pieces. My favorite genre, however, was classical—it had a sound and tempo that only humans could make. A demon composer would only butcher the natural, pure tones; that is why I didn't bother learning to play an instrument.

With Mozart's Symphony No.39 in E-flat major buzzing through my sensitive ears, I watched the scenery roll across the windows. And for a brief, fleeting moment, I was content.

It was dark by the time the train rolled into the empty stop, its lights flickering in a staccato rhythm. The rays of light bounced in the enclosed space, highlighting the platform I needed to exit towards. I quickly left the passenger car before the Phantom Train continued on, rolling past the stop to traverse the abandoned tunnels in search of human souls.

I walked in the opposite direction, towards the mouth of the tunnel; the Trains always stopped near Samael when in Assiah. Humming Chopin's Nocturne Op.9 No.2 , I found a sort of strange, though not unwanted, mirth invade my mind. I may not be a demon king, but I had a chance for glory and power all the same— a chance to even overtake a throne.

Tomorrow, I would find Satan's half-human child and take his flames for my own. But, that was tomorrow. Today, I would go to Samael.

Amusingly enough, it was the demon king who brought me to Assiah, and in turn, alerted me to the existence of the boy known as Rin Okumura. He was going to be my savior, whether I had to pry the sword from his dead hands or not. I just had to do one small favor for my cousin beforehand.

…Though, with Samael, nothing was ever that simple.

It wasn't surprising that I only had to follow Samael's trail of otaku merchandise to find him. Only he would make a town with the largest anime store in the world. It was akin to following a line of body pillows; his supernatural power leaked across True Cross town, along with the smaller retailers of anime goods until I found myself at the gate to the Academy.

It was only the second time I had visited the demon in his school, and the building was impressive, perhaps even more so in the night. Old-fashioned gas lanterns lit the entirety of the school, bathing the area in a sort of archaic atmosphere. It actually remained me of Gehenna, though it wasn't crumbling or smothered in demon skeletons like many of the buildings there were. I pressed a hand to the gates that barred me entry, feeling coils of static crackle dangerously against my skin.

As expected, there were enough charms, spells, and barriers to have even Satan reeling. I tried again, knowing that Samael had most likely felt my presence when I first touched the gate.

Just as my hand went for the dark metal, the gates swung open. I no longer felt any barriers; so the jester-like demon had noticed my presence…

Regardless, I remembered the flights of stairs fairly well, the maze of doors and hallways nothing but mere hindrances as I eventually found myself in the final hallway of the east wing of the Academy. Here, I could feel the air crackle with power. Samael was definitely inside the room.

Before I could reach for the doorknob, the door swung open, revealing the violet-haired king. He hadn't changed much, just the bags under his eyes seemed even darker, more prominent than just a few years ago.

"Acacius, is that you? My, my, your new host is quite cute~!" Samael fawned, ushering me into the spacious office. I took a seat in one of the gaudy pinstriped sofas.

I couldn't help the minute glare that passed my face at the older demon's words. Hosts were hard to come by nowadays; the only compatible human I found was a young teen, no older than seventeen. I had only possessed the body long enough for my natural, Gehenna-induced hair color to take up the roots of my hair. The messy, raven locks were a backwards version of the usual splatter-pattern seen in many sentient demons. The crown of my head was a dark blue, which faded to a coal black. My eyes, however, were the same piercing gold, which was a relief and my skin radiated with the same paleness as most demon-possessed humans.

I cleared my throat before speaking, hoping that it would hide my annoyance. "My last host… decayed too much. This was the best I could do on short notice. It's not often that you request my presence. Now, what do you need, Samael?"

The demon king chortled loudly. "Such a serious tone really takes away from your youthful appearance! But, if you wish to speak of business and not catch up, I understand," he paused, reading my face, "Oh, and how many times must I tell you to call me Mephisto!? It's the name I've been using for the past three-hundred years!"

He motioned for me to stand, pulling a manila folder from his desk. I approached him, noticing with a grimace that he was a good foot and a half taller than me. I was roughly about 5, 4' thanks to my new host body.

"My favor can be simple or incredibly complicated, depending on how you decide to go about it." He opened the folder, revealing the pictures of two brothers. Each had a single form with a list of information revealing age, weight, and even blood type. Under the photographs, I read the names Rin Okumura and Yukio Okumura.

"I need you to help train these two. Your ability to emulate and copy your opponent's abilities is an invaluable asset. You can teach Rin how to control his flames and Yukio how to properly control his emotions. I want you to transfer into cram school and blend in with the exwires. It is only to Rin and Yukio that you reveal the extent of your powers. You will train them to hone their power and in turn, you will gain their trust. What you do with that trust is up to you." There was a hint of malice in his forest green eyes, but they disappeared as a puff of smoke appeared at his right, revealing folded pieces of clothing.

He grinned widely, fangs showing as he spoke, "And you'll need to wear the school-issued uniform. You can't wear black all the time!"

I frowned, eyebrows furrowing. I liked my clothing just fine. But, it was Sam—I mean, Mephisto. I needed to play along if I wanted to fulfill my plan. I took the clothing proffered to me with little fanfare, keeping my facial expression neutral as the demon snapped his fingers, a torrent of papers floating into the air. I blinked, still unused to the manipulation of space. My powers lied in mimicry, but unless I truly spent time studying the ability, I could not perform it perfectly. And even after all this time, the king's powers still proved difficult to master.

"I'll pencil in your last name as Faust for now in the roster. Say that you're a very distant relative. And if anyone asks, especially in cram school, about your hair color say that it's dyed or at the very least, your great ancestors were water demons."

I nodded, absorbing the man's words. I had to earn the trust of the Okumura twins, and then break it, as all good demons do. Even if I upset Mephisto, he couldn't do much if I took the entirety of Rin's powers. The demon was no match for the flames; not even his parlor tricks and illusions could save him.

Just as I left the office, Mephisto called out one final time, "Acacius!"

I turned around, nodding my head to the side. "Hmm?"

"Did I mention that you'll be living in the same dorm as the Okumura twins? I hope you enjoy your high-school life~!"

A/N: Acacius literally means "not evil" in Latin. Yep, the irony's on purpose :P I wanted to throw a spin in the usual 'new transfer student oc' storyline, so don't expect too much romance. Though, I may lean towards Izumo/OC in the future. We'll see. Anyway, thanks for taking the time to read the chapter and I'll see ya guys next time, when the exwires meet the music-loving mimic demon :3

Review?

-Isis