Koro Sensei's daughter (Assassination classroom x Oc)

Chapter 1

Koroshiya woke up in her apartment that she bought with the bounty money she's collected. She put on her school uniform along with her scarf, and put the pistol that was given by the ministry in a holster that was hidden under her skirt and put the knife in her book bag.

She walked to Kunugigowa and walked to the main campus to see the principal.
"It's to my understanding that you are the assassin that will be joining Class-E," The principal Gakuhø Asano said.
"Yes I am," Koroshiya responded.
"Karasuma here will be Escorting you to E-class," Principal Asano said gesturing to a man with black spiked hair.
"Thank you sir," Koroshiya said with a small bow.

Koroshiya then walked out with Karasuma following.
"So you're the new student, I've heard you know Irina Jelević," Karasuma said.
"Yes I do," Koroshiya answered.
"Well she is the English teacher, I'm sure she will want to see you," Karasuma said.
Koroshiya nodded.

When they got up the mountain Koroshiya knocked on the door to the classroom.
"Come in," a voice said.
Koroshiya walked in to the class.
"Nfu~fu~fu you must be the new transfer student," The teacher said, "You can call me Koro Sensei."
"Pleasure to meet you Koro Sensei my name is Koroshiya Korogane," Koroshiya said, she then  grabbed her pistol and shot his leg like tentacles and went for her knife attempting to throw it at his head but he dodged it. "Damnit how'd you dodge that even if you can regenerate I shot your tentacles."
"Whoa you were able to catch him off guard, How'd you do that?" A boy with light blue hair and pigtails said.
"I don't know, all I said was my name the only reason why that trick even worked was because he was off guard, if he wasn't even the normal man would survive the only other person who I know has survived this trick was my first mentor, he wasn't just my mentor though he was like a father to me," Koroshiya said.
"You all are welcome to ask questions I'm gonna head of to China for a quick bite," Koro Sensei said then left in a blink of an eye.
"Are you an assassin," a girl with blonde straight hair said.
"Yes I am," Koroshiya answered.
"Who were your mentors," A boy with red hair asked.
"I had 3, my first one took me in when I was just a baby he was known as The Grim Reaper, my second and third ones were the assassins Lovoro, and your English teacher Irina Jelević." Koroshiya answered.
"I heard my name," Irina said as she walked into the classroom.
"Irina," Koroshiya ran to Irina and hugged her.
"Long time no see," Irina said hugging her back.
"You can be nice to people Bitch Sensei," a girl with green hair and gold eyes yelled.
"Shut up brat we have a history," Irina yelled back.
"Be nice," Koroshiya said.
"I have a question, how'd you get that scar on your arm," a boy with brown and blonde hair asked.
"When my father's protege sold us out and I was taken into custody by the Ministry of Defense since I was 13 at the time they tried to 'rehabilitate' me and since I was technically under custody they implanted a tracker in my arm. One day Irina killed the guy who was supposed to be my guardian I was able to cut it out with Irina's help," Koroshiya answered.
"Anyone know where the octopus is," Irina asked.
"He said he was going to China he'll be back in three minutes tops," The boy with blue hair from before answered.
"Why it's not lunch?" Irina said.
"He was caught off guard when Koroshiya said her name, he doesn't get caught off guard by names," the boy with red hair said.
"The only people that my name would matter to are Irina, Lovoro, other assassins, government, or . . . Reaper," Koroshiya said.
"As far as we know he isn't an assassin and he's only working with the government so he could be a teacher," a girl with Brown hair that was tied up into a ponytail said.
"That only leaves The Reaper or your father," Irina said.
"It could be possible he said he wasn't an alien," The girl with blonde hair said.
"But Koro Sensei isn't human and my father was human then again I don't know what happened to him after we got sold out," Koroshiya said.
"It could be possible his DNA was modified, wasn't our old teacher a scientist," The girl said.
"She was, I'm pretty sure she said something about an experiment with something called anti matter or something," the boy with blue hair said.
"I knew her before I joined this class she was talking about a guy with black hair and gray eyes that was getting the experiment on himself." The girl with green hair said.

When Koro Sensei returned Koroshiya asked, "What's your real name?"
"Why do you ask," Koro Sensei said trying to avoid the question.
"They told me Kyano picked the name, now please answer the question," Koroshiya responded.
"You all deserve to know," Koro Sensei said, "My original name was The Reaper I was an assassin before I got captured, I was a subject to an experiment that turned me into this."
Koroshiya ran up to Koro Sensei and hugged him, Koro Sensei hugged her back, "I missed you, if I could have tried to save you."
"I missed you to Koroshiya," Koro Sensei said.
"Wait Koro Sensei you used to be an assassin," The blue haired boy who's name was Nagisa asked.
"Used to be after some more tragic parts of my past that I will not be sharing today I made a promise that I will not be breaking any time soon." Koro Sensei answered, "Anyway let's continue class."

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