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The demon kings friend(or more)

Summary:

King and his family are demon hunters who exercise demons, they all go to a demon hunting school. His life has been pretty peaceful, but what if a certain demon king comes and ruins that so called peaceful life

Or

The collector is the demon king and decides to come to the human real to mess with humans or just a certain someone

Notes:

(See the end of the work for notes.)

Chapter 1: First day

Chapter Text

In the deepest depths of the underworld lived a being known as the demon king. The strongest being to ever set foot in this universe.
He had Snow White hair and a pair of horns sticking from his forehead, with large demonic wings.

The demon was most of the time sitting on his throne. Watching his underlings work for him.

He lived off of negative emotions that humans would often express, such as hatred or simply getting into a small argument. The demon king loved it when that happened. 
And since humans are often negative, he was always well fed.

But recently he’s been getting bored. For some reason feeding off of humans hasn’t been as entertaining as it usually was.

“Bored so bored.” he started sighing recently.

“Is there anything we can do for you collector?” one of the demons hissed out.

What could they do for him… nothing, most of them were incompetent anyway but he wasn’t about to admit that to their face.
He might be the king of demons but he still had a heart.

He pinched the bridge of his nose and sighed into his hand.” No you can leave.” he waved the demon off.

“Yes your highness.” the demon disappeared into thin air leaving the collector alone again.

He hasn’t been their king for that long. Today would mark the 17th year.
So in a way it was his birthday, maybe that’s why he was extra bored.

He wonders what humans do on their birthday.
Oh who was he kidding, of course he knew. He would often spy on random families wishing it was him living those moments.

 wishing to live while being the ruler of the dead and being dead himself was truly ironic.

To be fair it wasn’t his fault that he was created already dead, so he could never say he truly lived through anything.

More like he died through everything.

Not a very funny joke.

But you guys get the memo.

The collector sludged into his throne, staring up at nothing.

“Your highness might I suggest something?” the demon from before came back and said

“Didn’t I tell you to leave.” the collector said frustrated at the other being

“Yes but I just thought of something.” what a miracle they can actually think for themselves, normally they’d only say random bullshit, but he’ll hear this one out, just this once

“Well spit it out.” the demon king rolled his eyes at the other, waving his hand back and forth, signaling to the smaller demon that he was losing his patience.

“You seeee…” the demon hissed out “in the mortal realm they are going to be starting a new school yeaaarrr…”

“And your point is?” the collector arched a brow

“You should join them and pretend to be a human like theeemm” the demon suggested “and like that you can feed off of their negative emotions more effectivelyyyy.”

The demon king pondered for a moment.
He got what the other was saying and it did make sense. But going to school didn’t sound all that enticing.

“Hmmm, how many days do I have left to decide?” he asked curiously

“ 3 days your majestyyy.” that was enough time for him to make up his mind

“I see, you’re dismissed.” he waved off the other demon to which he just bowed and disappeared once again.

He’s never actually stepped foot into the human realm, only spying from down here.
So should he stay here and die of boredom or should he start a fresh and new adventure that would actually benefit him.

Well there was only one right answer to this.

And you all guessed it right.

The collector got up from his throne and stretched.
It was showtime now.

Before he left he left a little note on his chair for his underlings to see.

But before he left he needed a new disguise.

He took away his horns and wings along with the half moon painted on his face. He then shrunk his pointed ears to human size. 

And now he was ready to go.

He opened a portal to the human realm and walked inside. He teleported to a random corner to make sure nobody saw him, he left the alleyway and looked left and right just to make sure nobody saw him. 

Now all he needed to do was sign up for school, and he decided that he didn’t want to let his powers do all the work this time.

He wore a black coat with matching pants and shirt, since he knew what humans usually wore during almost fall season he knew he wouldn’t get a lot of attention.

Or at least that’s what he thought.

Whenever he passed by someone they’d always turn back to get one last glance at him, or whisper something, it was probably the white hair, he should have changed that too.

Oh well it was too late now.

Wait where was he going.

The collector stopped in his tracks to think, the other demon said school but he didn’t specify which one.

But I guess it didn’t matter, he could use his powers just this once.

He paused again, closed his eyes and pictured a map. There it was he was pretty near it.

He continued walking for about 5 more minutes until eventually reaching the school. High schools were usually big so he wasn’t surprised by its size.

He walked into the school and asked the cleaning lady” excuse me, where do I sign up for this school?”

The lady gave him directions all the way until the principal's office. He knocked twice before coming in.

“Greetings mortal I am colle- *cough*” shit he forgot to come up with a name “I am um…” he needed to think of a name fitting for him. Wait he remembered a while ago of some kids talking about a game named Honkai impact 3rd, what was the villains name.

Think think think.

Aha he’s got it

“My name is Kevin, yea Kevin.” he took a seat and looked at the puzzled principal 

“Kid are you ok?” The principal lady asked, she almost sounded a bit worried 

“Yup perfectly fine no sweat.”the demon king opted for saying, he hoped that she wouldn’t suspect that he wasn’t a human or something. Who was he kidding? She probably didn’t even believe in demons.

I mean he knew there were demon hunters but not everyone believed in them even though they were clearly real. But she was probably just a normal human in a normal human school.

“Right, well im Eda the owl lady pleasure to meet you.” she took his hand and shook it with a little more strength than necessary 

“Owl lady?” He tilted his head in confusion, wondering what could possibly have given her that nickname

“Oops. I should really stop telling people that.” Eda scratched her head like she just told a massive secret

“Anyways what brings you to this school?” she took out some paperwork and handed it to him “please just fill these out”

“Alright.” he replied grabbing a pen to begin writing

“Well I’ve heard good stuff about this school so I decided to transfer here.” what a bunch of baloney he could almost laugh at what he was saying.

“Of course, with the best and strongest principal there are only good things to be said about this school.” Eda was of course exaggerating but he didn’t need to know that. Did he know? Yes, would he tell? No, he found it kind of endearing.

Maybe the demon was right.

“All done.” he smiled and passed the paperwork back to her 

“Wow you’re fast.” she took the stuff from his hand and looked just to make sure everything was right. “Well you are officially enrolled”

“Welcome to the first ever demon hunting school.” she opened her arms forming a mini rainbow in between them

Wait what. Demon hunting, humans didn’t believe in demons and the demons also didn’t actually physically mess with them. 

Unless he definitely missed a chapter.

This is what happens when you spend so many years doing nothing.

“Right, thanks can’t wait to start.” he gave a weak smile then got up. 

But just as he was opening the door he slammed into someone who then fell to the ground.

“Ow.”a pitched voice said.

The collector looked down on the floor to see who bumped into him. The other one got up and looked up at him.

“Watch it midget.” the demon king replied without sparring another glance and left

“So rude.” 

“King what brings you here?” Eda asked

King what a dumb name the collector thought, although he couldn’t really be talking about names when his was also a title.

But he was the demon king, not some random low life.

But going back to what really mattered, how could he have not known about the war between humans and his demons. He’d have to ask one of them what really happened.
And that lady with short brown hair who was by the front gate was his perfect target.

“Excuse me, could you help me with something?” he tried to come off as nice as possible

“Sure thing what can I help you with?” she turned around from talking with her friend to look at him

“How long ago did the war between the demons and humans break out?” he needed to hear both sides of the story.

“A couple years ago when a demon randomly appeared in broad daylight and attacked a human, and that’s when we also discovered humans with special powers that could fight back against them.”

Well that was a lot of information for such a short conversation.

“I see, thank you.” and with that he finally left the school

What could have possibly been the motive of that demon. 

He sighed softly, what a day huh.
Now he needed the other side of the story.
And lucky him there was actually a demon in the alleyway that he came from

“Stop right there.” he commanded to the other demon that froze In place when he heard his words.

“How long have you guys been noticed by the humans.” the demon king got straight to the point

“Your highness.” the demon bowed down to him not daring to look him in the eyes

“Answer the question, don't make me wait.” he warned to not test his patience 

“I- there was this demon who found out that eating humans tastes better than feeding off of their emotions, so we all just followed along.” the last part of the sentence was said barely above a whisper 

“And you guys never told me. Why?” he stated more than asked not to mention that he was getting angry 

“Im sorry your highness we were too scared.” the demon now was shaking in fear, wondering if this was his last time to exist

“Leave now.” he said before turning around and leaving the demon to it

Now everything made more sense, that human had probably forgot to mention the eating part

He was honestly impressed that they managed to keep it a secret for this long. Maybe he should try it.

“Ahhh help a demon” screamed a random person that was being attacked 

Now was his chance to observe what really happens. “Somebody help” they yelled again but everyone was too scared to actually jump in.

The demon bit into them earning another yell in response.

Interesting so they just eat them like that, that’s horrible the collector thought ironically.

Before the demon could take another bite a fire ball came out of nowhere and exploded the demon's head, making it disappear into ash.

How did he even get here so fast, the collector pondered after seeing king again.

Cheering filled the streets and all king could do was wave back, taking in the game of the moment.
He looks more like a queen the demon king chuckled to himself.

“Hey you.” his train of thought got broken by none other than the one he was thinking about.

“Me?” He asked, pointing a finger to himself. What could he possibly want now

“You’re a demon Hunter right, why didn’t you help.” great he forgot that he was enrolled into the demon hunting school and he saw him there, there was no way of lying himself out of this one

“Mind your own business midget.” he spat at him 

King on his part was baffled by that answer, what type of piece of shit was he

“They could have died also you’re not that much taller than me.” he stroke back at him

“To each their own kitty.” the look on kings face was worth all the money in the world which is why the collector couldn’t stop himself from laughing out loud

“What is wrong with you, how can you be so heartless.” king was judging him hard but the demon king couldn’t care less, so he began walking away.

“Hey get back here.” king called out and began following him

“Why are you even enrolling into the school if you’re not up to saving people.” that was a good question. How was he supposed to answer that, hey im actually a demon and just doing this for fun. No he couldn’t tell him that they’d probably break out into a fight. Of course he wasn’t scared of fighting since he’d  win easily. But he also couldn’t get a bad reputation already, school still didn’t even start.

Ugh he was already starting to sound human, which if you think about it is good if he wanted to blend in.

The collector stopped and turned around to really look at the other.

His skin tone was brown and he also had dark short brown hair just like that woman that he came with. And now that he realized it, that was the same one that he spoke with. Could they be 
siblings.

“Listen here kitty.” 

“Stop calling me that.”

“Why you’re feisty just like a baby kitten.” he provoked the other, he could practically see the fumes leaving his face by how red he was getting 

“I can do whatever I want whenever I want.” he started walking towards the other, making king walk back into the wall.

He slammed one of his hands on the side of his head and leaned by his ear to say “so you should start minding your own business.” he gave him a weak and crooked smile before leaving again

“What the hell.” king whispered to himself leaving his hand on the ear that the other talked into

The collector had no idea where he was walking. He just wanted to seem cool leaving so now he was lost. Not that it mattered he could find his way again. Now all he had to do was wait until Monday, he could wait 48 hours. He was used to sitting around doing nothing.


———————-

Monday finally arrived. He heard from the grapevine that they’d have dorms, he hoped that his roommate would be better than that guy that he encountered.

There were a lot of students near the front gate. He didn’t get why they were all just stopped there not moving, if anything that just pissed him off. 

He made his way to class. It seems everyone already had a seating plan because even if he was 5 minutes early there were no places left except for one besides…king?

Maybe life was playing a joke on him, but to be honest he found it kind of funny.

“Hey kitty, it seems fate has brought us together again.” king turned to his side with wide eyes wondering how he even was here again.

He huffed and rolled his eyes “just don’t talk to me.”

“Whatever you say princess.” he laughed at his own words, annoying the other.

“Settle down everyone.” the teacher clapped her hands to gain the students attention 

“I will be calling out your names and then giving you all your dorm keys ok?”

The collector blurred out everyone’s names until his. He got room 66, pretty ironic since he was a demon.

He leaned over to his side “hey what number did you get?”

“I thought you said to mind my own business.” he shot back at him. Well I guess he did say that.

“Now that you all have your dorm keys I’d like for you all to introduce yourselfs, starting with you all the way in the back.”
The teacher said excitedly 

King got up from his seat and stood up “my name is king and what I like to do most is saving people from demons.”

That earned a laugh from the collector

“What’s so funny?” king asked annoyed at the other

“Nothing I just can’t believe your name is actually king- pff ahahah.” king just sat down in embarrassment 

“Oh yea then what is your name?” he pointed out

The collector stood up from his seat and said “my name is coll- I mean Kevin and I like to… slay demons.” he asked more than stated that last part. 

He didn’t really know what other human hobbies were besides playing video games, and that seemed too lame for him.

“Alright, next please” the teacher said not paying much mind to him 

“You know, if you wanted my name that bad you could have just asked before.” the collector provoked

“Ugh” was the only reply he got for the rest of the class

After the bell rang all of the students got up and went separate ways to find their dorms.

But for some reason it seemed like the collector was following king. 

And no he wasn’t, he was just going the way his powers led him to his respective room.

“Hey are you going to stop following me” king turned around, facing him with a glare. That look could bore holes into someone 

“Im just going to my dorm.” the collector shrugged at him “but hey maybe we are sharing a room.”

“Please don’t jinx it” king walked off finally reaching his room.

He unlocked the door but before he could slam it shut a hand stopped him

“Guess we are buddies after all.” the collector jingled the keys in the others face “I guess we are destined to be together” he said jokingly to him, but a part of him really believed in what he said

He moved king out of the way and walked into the dormitory 

“You have got to be kidding me.” he heard king mumble to himself before shutting the door.

The room was pretty spacious, there was a bathroom to their left and at the corner of the room was a bed that was parallel to another one.

Well this isn’t too bad he thought. He could have got a better roommate but it is what is.

“So what do you wanna do now”

“You leave me alone, and im going to sleep now” was the answer he wasn’t expecting but got.

What a bummer he was bored now, sure it was kinda funny feeding off of the others negative emotions but now he had nothing to do. Or maybe he could try and take a nap too.

In the underworld he never actually slept, sure he’d close his eyes here and there but it was never really sleeping.

Well since he was already in the human realm might as well try it out.

He laid down on his bed and turned to his already sleeping partner, he then closed his eyes and let his dreams carry him away.

“Hey wake up.” he felt someone nudging him
“Classes are going to start soon and you’re going to be late if you don’t get up now.”

How long has he slept for

“You’re lucky I even woke you up.”king huffed and went to pack his bag

“Yea yea thanks.” he slept for way too long, I guess this is what happens when you’ve never slept before.

“What’s our first class again.” he forgot his timetable, but it wasn’t his fault it was only the first day

“It’s gym.” king replied 

Thank god he had powers because he had no idea what gym was.
He had to be extra careful with this class because of his strength. He couldn’t make it too obvious that he was stronger than the rest. Maybe he could flex a little bit, but nothing over the top.

He heard the door shut, stopping his train of thought.
Did he seriously just leave without him.

“Hey wait up.” he yelled after the other and caught up to him “you could have waited for me.”he gently nudged king to the side

“We aren’t friends so I have no reason to wait for you.”king began to speed up hoping to lose the other, but he wasn’t so lucky since they were going the same way. Same classes, same direction.

When they got to the gym everyone was already in their outfits.

Their pe teacher introduced himself and ordered them to get into pairs. King immediately left his side and went to look for someone else to be his pair.
The collector found a pair relatively easily, it was a random girl from his class that asked.

“Your first game will be basketball, and you get to choose your opponent.” choosing your opponent seemed fun enough, and he knew exactly who he wanted to be against

“Hey kitty play against us.”he tossed the ball over to king and his pair
He gave him smirk that said if you deny you’re a coward 

“Fine.” he grumbled 

“Whoever already has a pair may begin playing.” the teacher shouted to make sure everyone heard.

They began playing in the burning heat, too hot for the end of summer. Sweat began to slip down kings forehead, gluing his hair to his scalp. But what was more frustrating was the fact his opponent still hasn’t broken a sweat.

He must’ve got distracted because from one moment the ball was dribbling in his hand, and the next Kevin had it and shot it right through the net.

“Focus princess.” this guy was seriously getting on his last nerves 

Now it was his turn to start. Ok, he had to win this to prove that he was better than that Kevin bastard. He dribbled and passed the ball to his teammate, but to his luck they lost it to Kevin.

“Better luck next time.” he winked at him before scoring another goal from the half of the yard, everyone around them roared in surprise. 

First day and he was already going to get popular off of this game

After a few more minutes the score was 12-10 with Kevin’s team in the lead.

King just needed to score 2 more goals, even if he didn’t win he still needed for it to end in at least a tie.

His heart was hammering in his chest; it felt like he was 2 seconds away from a heart attack

He faked a left and went right, dodging Kevin and scoring another goal.

12-11, just one more and he wouldn’t seem like a loser.

Now it was the collectors turn to start but he didn’t move an inch, he just stayed in the same spot dribbling.

There was only a few seconds left what was he thinking, but then suddenly he moved in the direction of the other end of the yard.

King tried to keep up with him, now his heart was hammering against his ribs louder than the crowd that they gained from playing this game.

He tried to reach out to the ball but the other one was too fast.

He finally stopped at the end of the line and threw the ball all the way from there. No way in hell he was going to make that was what King thought until the crowd bursted up in delight.

He really made the shot.

And now the game is officially over.

“Try to beat that.” he winked at him for the second time of the day.

Oh boy this was going to be one long year.
This was also the second time he's been humiliated by him.

“Hey where are you going.” the collector broke out of the crowd to follow him.
The teacher and other students asked him to join the basketball team to which he accepted of course.

“Cheerleading practice, now leave me alone.” king sped off leaving the other in the dust.

Does that mean he’s going to get to see him in a skirt