[NOT UPDATING] Once An Assassin, Always An Assassin - Ansatsu Kyoushitsu Fanfic

Chapter 1 - He really is a monster

That was one of the worst things the world had to face. Things were worst for the 3-E students of Kunugigaoka Junior High for that year.

The culprit was standing right before our eyes as our teacher. I still remember the exact sentence he said when he stepped foot into the classroom.

"How do you do? I was the one who blasted the moon," was what the octopus creature said.

I could swear that all of us weren't taking it seriously. Like, who would admit to doing it so openly? And looking so hilarious like that, it could be easily passed off as a joke. He even said that he had planned to do the same to Earth the following year, which sounded even more like one.

He then introduced himself as our teacher from then on, and all of us stared at him dumbfounded. I remembered that I wasn't acting like how I was now, I was more shy and reserved at that moment, because I didn't want to return to my previous self after a certain incident during my first year of junior high.

He wasn't the only one who was standing in front of the classroom. Two other people (thank God they are humans) who claimed were from the Ministry of Defense, had asked for our cooperation for that creature had insisted on teaching us and keeping it a secret as to why. One of them who introduced himself as Karasuma, had tried to explain everything to us, even mentioning that him being here is supposedly a state existence, so no one actually knew he was here other than the government, my foster father and us. What he said next was the most unexpected thing any of us had ever thought of.

"Let me be blunt. I want you to kill this creature."

... What?

With the whole class being quiet, Mimura Kouki spoke up. "Wait, what? So that is the alien thing which came to attack us?" He asked, feeling as confused as all of us.

Our new 'teacher' seemed annoyed. "That's so rude! I'll have you know I was born and raised on Earth!" He retorted.

I raised an eyebrow at the grammar he used. Was?

Karasuma then explained as to how the world would be in a global panic if they knew he was on this planet, so we would have to kill him in secret as we were the only ones who have the highest chances of killing him at a close range. Besides, it would help the government keep an eye on him.

In other words... an assassination has to take place in this very classroom.

As a demonstration, Karasuma quickly wielded out a small green knife and made several attempts to slash the creature, but with all of them failing. The dude's speed is ridiculously fast. So fast, that it would occasionally create gushes of wind like how a sports car probably would in the desert at high speed.

We were forced to do this. If he ever gets away, there may be no chances of capturing him again, and we would just be waiting for March next year, left helpless, the month where the Earth's destruction and our deaths await.

As such, both the creature and the government had come to an agreement. The government cannot kill him in exchange for him teaching at Class 3-E of Kunugigaoka Junior High. He would also be unable to harm the students in anyway, but the students would be given the chance to harm him instead.