Day one,

Killua zoldyck, an ex assassin had run away from his past life and his past friends in fear of killing his friends and that his family would use them against him as he was the heir of his family's business, which he refuses to be but that doesn't stop his family from trying to bring him home and make him the next heir. Anyway the silver haired male had found his way in an unknown part of Japan that he knows his family wouldn't bother coming over unless it was for a job which he was thankful so Killua takes this chance to have a 'normal' life as a fourteen year old meaning he's joining a well known school though because he slept through the test to put him in his group he was placed in E-class which Killua doesn't careless.

"Why the hell is the class so high up...?"

The silver haired male grumbled unhappily as he made his way up the steep hill, a yawn came from the male as he tiredly makes his way up. Killua didn't bother wearing the uniform as he saw that it doesn't suit him and that he just didn't like it at all, after a tired walk up the hill Killua was soon awake as the building for E-class soon appeared in front of him.

With a sigh the fourteen boy made his way in knowing that he was late but right now he didn't care as he sense that something wasn't right, while walking within the wooden building he was eating a chocolate bar that he had within his pocket of his shorts, the ex assassin was greeted with a male that looked like he was in his 20's as his aura was strong and serious which made Killua more on guard.

"Your Killua zoldyck? A ex assassin?"

This had put the young zoldyck on guard as he never mentioned he was an ex assassin but it also made him curious how he knows his past job.

"Im karasuma from the Ministry of Defence and I'm one of the teachers here, you'll be here to kill the octopus that's teaching your class also you have until march until he'll destroy the world"

'Karasuma' introduced himself but also telling Killua what's happening, just when he thought he could of lived a normal life he had to go to a school that had a octopus as a teacher, just what he wanted to go back to his assassin ways... the same thing he's been trying to get away from, at least it's for the great a good he guess

"Lets just get this over and done with"

The sliver haired male sighed before he collected himself and his emotions as his friends would probably say he was in his assassin mode.

Being lead to the classroom Killua had a quick look around as his blue eyes was taking in everything seeing that they had stopped in front of a door, his attention drifted back to karasuma sensei as he watches quietly as the older male opened the door. Killua stepped in after karasuma as he lazily looked at everyone in the room though seeing the creature he's meant to kill a smirk went onto his lips though that smirk soon went away.

"Everyone you have a new student"

The creature said as it's grin some how got bigger as the creature looks at the class then at Killua

"I'm Killua"

Many of the students sweat dropped at the introduction but didn't say anything as the aura Killua was giving off had made them question if he was just a student or if he was actually an assassin though they were surprised that the new student didn't go and 'kill' their teacher as Killua was munching on one of his sweets happily ignoring everyone as he went to sit at his desk.

"Now, as everyone is here let's start with some maths!"

With that Killuas new life had started with a octopus that's teaching the end class, personally Killua can only image that it's going to be a long and 'boring' job.