The Assassination Classroom is real?! (Various x reader)

Transfer student

I've been so tired ever since out trip to Kyoto, by body was still healing from all those injuries. Heh I really am reckless aren't I?

I yawn as I walk to school, I woke up late. I hope Karasuma won't be mad. As I got to the beginning of the mountain I heard whispers about me being in class E blah blah whatever.

I looked up as saw that class A brat. What was his name?? "Asano Gakushū" I said his name and stopped in my tracks as we made eye contact. Ugh I hate that cocky look in his eyes!!

"Well well look who we have here? The class E transfer student, heh she probably don't know what I'm saying" he grins to himself like he said the smartest thing ever. 
I sighed. "I don't understand you classA brats and your grade system. Honestly I should be graduating high school right now." I wasn't in the mood to deal with this.

He looked shock "Tch just continue walking  Einstein wanna-be" I walked away and could practically feel his glares.

I made it to the building but hopping through the trees since it's quicker and funner that way.

"Sorry I'm late gu-" I was cut off as I saw the class around this giant rectangle box. Ohh right the military's way in trying to help. Ritsu
I went to my seat and put my head down

"How does this not bother you one bit {y/n}?" Nagisa asked
"Huh? Oh that? As long as I don't get hit I'll be fine" I smiled
"Hit?" He looked confused

I was about to say why I said that when the screen turned on showing a teen age girls head with light purple pink hair.

"Hello everyone my name is 'Autonomous Intelligence Foxes Artillery' I was sent here to help with your assassination." She said in a monotone voice
"Cool! How's that going to go when you don't have um arms?" Rio asked

She then pulled out machine guns from out of no where, demonstrating that she works best with shooting. "ILL help by trying to get accurate shooting of him."

Everyone was amazed and trying to ask more questions until Karasuma came in.

"Hello everyone, as you may know this is our new transfer student. She's kinda different but she's just like any of you. Which means" he looks at Sensei "Which means she will not be harmed"
"Nuhfufufuf my my isn't that a little unfair" Koro-Sensei face turned with green strips.
I rolled my eyes, "Grr that isn't fair" I mumbled
Karasuma sighs because he knows what I'm talking about.
"What do you mean {y/n}?" Nagisa asked
"The military gave the authorization for sensei to attack me with no consequences" I sigh
"Ehhh?! But your a student!" Kayano say with a bit worry
"Yea, but I'm a human experiment. My senses are heightened by 95% along with speed and agility. I'm no ordinary student." I smiled slightly as they looked amazed.

Rio was about to ask more questions when sensei jumped in

"Ok ok we can ask questions later but now it's time for history!" He said as we all got ready to learn.

It was 20 minutes into teaching when I noticed that machine was scanning everything. The class didn't notice it sadly. Just then her screen turned on. "Uh oh" I said as I went under my table with a book covering my head
"Uh why are you doing that?" Karma said
"You'll find out soon" I said.

He was about to speak when about 6 machine guns came out from the sides of the machine and started shooting bb bullets at sensei. Some kids were caught while others confused.

"This is a lot noisier in person!!!" I yell as I hear a few girls scream
"Come on! Seriously!" Rio yelled.

After what seems forever that this thing was shooting, I got up and looked around the class.
"Aw man! Now we gotta clean this up!" I grabbed my head
"What the hell?!" Rio yelled at the machine