Disclaimer: I don't own Ansatsu Kyoushitsu (Assassination Classroom) or Durarara

Summary: After taking the blame for stabbing her one and only friend; Izaya Orihara ends up in E-Class also known as End-Class when she was expelled from her old middle school and placed is placed into Kunugigaoka Junior High School. Can be treated as OC but is slight crossover with DRRR

Warnings: Language, blackmail, violence, assassination, and everything Durarara and Assassination Classroom.

Chapter One

Humming and skipping, Izaya Orihara made her way up to her new classroom in her new school. Her uniform was – Let's go with not uniform. It was the skirt and long socks that the others wore even the same sneakers and shirt. Izaya even put the tie on, but there was a huge difference between her and the other girls that went to the school following typical uniform rules.

She had on a large black coat, white fur on the hood and along the bottom.

It had been something of her trademark back when she went to Raijin and lived in Ikebukuro. It was a good jacket for her especially for the multiple pockets which allowed her to hide a number of knives and cell phones on her person.

For the most part, she almost always had at least two of her three cell phones on her. This was because she was only just starting her 'Job' and the last thing she wanted was to lose credibility before the fun really began. So far she was only planning with lower level Awakusu and some simple 'is he/she cheating on me' – To which the answer is almost always positive. At this time though it was too potentially dangerous for her to build up reputation much higher than it already was. Instead, she wanted to create a larger information base – Allowing for blackmail of higher level people which would create more of a safety net for her.

This was exactly why she was so happy, skipping around even as she entered the lowest level of class in her new school.

Not that it really mattered with her anyway – With her high level grades she would be back at the top in no time.

It wasn't much longer before her trek up lead to the room she was meant to study in. It seemed like a hazard place that deserved a No Trespassing sign and an urban legend based on it. Based on even her research on the school that she'd picked, it was to her knowledge that it was meant to be a good school all around – One of the highest ranked. The fact that this place had a building such as this one was interesting information. Useful enough that she brought out her phone and placed it down on a notepad along with a image as she entered the classroom and quickly stuffed her phone back in her pocket.

The classroom itself was pretty normal, although many of them had interesting hair colours. Shrugging to herself and ignoring all the looks she was getting, Izaya took a seat in the back of the room. It wasn't unlikely that they were used to people ignoring the change to introduce themselves here. It was 'End-Class' after all, most of them were considered delinquents or failures.

It was a whole new years of classes, essentially only just beginning. From what she understood of the information given to her when she transferred in, a new teacher was coming after the only one went missing – Presumed dead.

"How do you do, I'm the one that tore a chunk out of the moon."

Izaya swirled her head around from looking down at her desk to staring at the sight before her. Raven locks following a moment later, and her red eyes widening slightly in shock. A yellow blob, with squirming limbs and a wide grin, several people around him in suits.

Government people – The obvious look was right there. The classes' reaction was deadpan and pretty disbelieving, Izaya felt similar.

During the whole, the moon becoming crescent situation, Izaya had assumed it was the testing of some new type of weapon. After all, Izaya knew that her humans were prone to attempting to make the next big bad weapon. Countries competed with each other, even if usually in secret. It made sense – Her theory. Yet somehow there was a bit of doubt now forming, even if she didn't completely believe him.

"I plan to do the same to the Earth next year. Until then however, I will be your teacher. Nice to meet you~" The squid spoke, seemingly perfectly at ease with the situation.

"Uh, I'm Karasuma with the Ministry of Defense. First; please understand that this is all classified information. So let me be blunt; I want you to kill this creature." One of the men in a suit spoke out, arms crossed. It was subtle, but he was nowhere near as at ease as the squid was. Clearly he was on edge, and not only because of the squid, but also because he was in a classroom. Certainly it wasn't something typical of the man.

"Uhm… So what's the deal is he an alien invader or something?" One of the students questioned hesitantly.

Izaya was on edge immediately unlike most of her classroom who seemed to be taking it somewhere between a joke and a shocked curiosity. She was always on edge when it came to things that were inhuman. Example being Celty – Although she was Izaya's only friends love interest, the raven haired girl couldn't bring herself to trust or even care for her. Not like Izaya cared for her humans anyway – That abnormal headless woman was nothing compared to wondrous humans.

"How rude! I'll have you know I was born and raised on Earth!" The squid ranted, waving his tentacles around wildly and his face turning slightly red in anger.

The government agent went on to explain the situation. For some reason, it was true that the squid had blown up the moon. The reason that the squid was here was simple – Assassination. They wanted the children in this classroom to kill the squid that was before them. The facts were given; he was fast. In fact, he went at a speed of 20 Mach at least, and after failing to assassinate him, the squid would groom the assassin. The reality of the situation is that if he wanted to get away from the government – He could. This wasn't something the man really needed to say, considering he already expressed the speed in which the squid moved. It seemed that the squid wanted to be a teacher, even though no one knew why.

Izaya allowed a twisted smirk to appear on her face; the kind she hadn't shown since getting her revenge on Nakura – The one behind Izaya getting expelled, and the stabbing of Izaya's only friend, Shinra.

This was going to be interesting

It made her excited.

Suddenly she was glad she'd been expelled from Raijin Middle, for it would never have amounted to something as interesting as this development.

"Should you be able to actually complete an assassination on this monster you will be awarded Ten Billion Yen."

Now that got a reaction from the class. Izaya looked at them in fascination – Her humans were acting so human; so controlled by money and greed. It was just so amazing, so interesting.

She loved them.

Observing them, interacting with them, and seeing them interact with each other. What an interesting situation they were put into here – Something that children were never expected to have to deal with. Kill their soon to be teacher, assassinate him in cold blood. What would the reactions be, what would the humans, no, her classmates come up with. How would they change, their personalities, would they be broken?

The money wasn't something that Izaya cared about. She already had enough through her job to live comfortably for several years after she hired someone to invest for her. Adding access was nice, but nowhere near needed. However this situation would affect this group of humans far more than she could ever observe elsewhere.

It was far too good an opportunity to turn down.

"This guy looks down on you, but that is okay. As he does that, maybe he will let his guard down and allow one of you to kill him. We will provide you with the weapons that you need. They will not hurt humans but they will work on him. Of course it goes without saying that this must be kept from your friends and family. There is not time to lose; Earth's distraction is at hand." Karasuma finished rather dramatically – But not without meaning.

Izaya raised her hand thoughtfully as she went over what was just said. If the government was making weapons that hurt just their new teacher – It was unlikely that other weapons would be allowed. Karasuma acknowledged her hand and Izaya spoke, "Seeing as how the government is providing us with weapons would it be fair to say that we can request specific weapons to use for the assassination. Say for example if we have experience or knowledge on something other than what you provide without us expressing our needs?"

The class looked at their new addition with shocked faces – Almost unable to believe that she was taking it so seriously right off the bat. Karasuma on the other hand looked mildly taken back by the question, "The government is desperate; as such we will spare no expense when it comes to this. If you need anything in particular there is a form for that. I will pass them out at the end of this first day."

Izaya nodded, mostly to herself.

The quasi-informant would of course request the weapons that she was best with. Being flick knives and throwing knives – Although she was sure they would get guns without request. Judging by the huge machine guns the man had just brought in for example purposes. A simple handgun was all she would use – Training in something more would be a waste of time considering her plans for the future.

The end of the day came early; as we were left to our own devices to absorb the information that all the students had just been given.

Izaya filled in her form and turned it into Karasuma, who looked down at it with curiosity. The man hadn't assumed that there would be any people in this class who knew how to use a weapon already, not that it wasn't an advantage. He widened his eyes at the requested objects – However it wouldn't be a problem. Still, Karasuma turned to look at the girl before him. Black hair, red eyes, and a hint of a smirk behind those lips. Mischievousness hidden in her eyes, along with a cruel streak that could be useful – Or end up being the complete opposite.

Karasuma would keep his eyes on her, this Izaya Orihara, either way.

Izaya skipped out in the same manner that she'd entered the newly formed Assassination Classroom.

This time there was a wicked smirk on her face – How glad she was she ended up in E-Class