Hello, guys, I'm back with a new story! I got this great idea for a crossover. Since HataMaou lacks in fics even crossovers and I hardly come across any good Pokémon Special crossovers. Which is why I came up with this story! This crossover will loosely follow the light novel plot of Hataraku Maou-sama! With some changes of course and some in between subplots that involve the dangers from the Pokémon World itself, nothing is always roses or sunshine. It will be filled with humour and epic moments and slight shippings later on. This is my first story that I publish first on Tumblr do then on Fanfiction.

On a side note: I'll be using the Japanese names of the Pokémon, places and characters. Since I own the Japanese volumes of the Pocket Monster SPECIAL manga.

I've planned to publish this story sooner, but due to complications. I lost a big part of the 3rd chapter which I was working on and it took me almost a week to recover that I was kinda down and decided to focus on a future chapter. It's not recommendable, but in my case, since I have already had an idea of what I want in chapter 3, it worked out just fine.

Disclaimer: Hataraku Maou-sama! © Wagahara Satoshi & Oniku, POCKET MONSTER SPECIAL © Kusaka Hidenori & Yamamoto Satoshi.

Also, I want to thank my sis and Sapphire Otaku from FF to help me come up with the title and MaouVioletta656 for giving me that one push needed to write this.

Chapter 1: The Demon King arrives in Kanto!

Midnight was approaching, while the bright orange hue of the sun ray had been replaced by the black of the night hours ago, many people were still walking through the city streets. Continuing their shopping, returning home or leaving. It was a peaceful evening for the citizens of Tokiwa City. However, as they continued their lives no one was aware of the events that took place not far from them. Within one of the alleyways a dark flash appeared, scarring any creature that lived near. Two figures emerged; they were two men not younger than twenty, covered in scars as if they had escaped a fierce battle. Both males were dressed in what seemed like clothing from some middle age fantasy era. One of the males was quite tall, he had white hair and brown eyes, while the other one was of average height, black hair and red eyes. The two were surprised at their surroundings, but they had no time as someone arrived at the scene.

"Are you two alright?"

The figure was a female, her long blonde hair was tied up in a ponytail and her yellow eyes stared worryingly at the pair. Her creme coloured dress tunic was a perfect match for her pretty face and it made it easier to be spotted even in the dark alleys. She was surprisingly short and looked quite young. To her side was a yellow rodent, hiding cautiously behind its owner.

The two men looked surprised at the newcomer, they could not understand what the woman was saying.

"Is that blood? Ah, you two quickly need medical attention!"

"Fall back you foul beast, who do you think stands before you?!"

The white haired male declared boldly as he glared at the blonde.

"…"

The girl did not understand the man and blinked in confusion. This surprised the two men, as the blond did not feel any type of intimidation from the two. The small yellow creature next to her, on the other hand, began to glare and produced electricity from its cheeks.

"Chuchu, please calm down. I don't want to cause any trouble."

The blonde's voice was filled with tension, but stern. The rodent lowered its gaze but kept its eyes fixed on the two suspicious persons.

"I can guess that you're not from around here, but it's not good to walk around in alleyways, especially this late at night."

She was fully aware that the two man could not understand her but said this anyway.

"What should I do?"

The blonde mumbled as she looked through her belongings, trying to find a specific item. One of the men suddenly held his hand in the air, as if trying to summon something. The girl and rodent stared confused at the man's odd behaviour and waited, nothing happened.

"Is that a form of greeting?"

Surprised at the silence the tall man turned towards his companion.

"My, my liege… That…that form!"

The man's voice shook as he took a better glance at his companion.

"Hold your magic, Alsiel. We must learn of this world first."

The dark-haired man appeared serene in his demeanour, but his teeth were clenched as if fighting off some heavy weight which as acting upon him.

"Hello, Green-san? I need you help. I've found some injured foreigners and they speak some strange language."

The tension that had kept the blonde on her guard had disappeared completely as she began to talk to some odd device on her wrist, peeking cautiously at the man called Alsiel and his companion.

"No, they're not drunk and they're also not on drugs either! They do seem to be wearing strange clothing that looks on the large side. No, they don't look like hobos either. There's nothing wrong with looking after the injured! Yes, they need it, so could you please come, you're the only one I could think of, who can help me in this situation. So, please help! Ah, thank you very much Green-san. I'm a few blocks behind the Trainer House. See you soon."

The blonde turned back to the two men.

"I think it's better if you come with me. It's too dangerous to stay in this alley…"

"Be quiet human."

The girl trailed off when the dark-haired man's eyes began to glow, making Chuchu sneer at the man and release electricity again until…

"Ugh!"

"What?!"

She suddenly clutched her head and dropped to her knees, while the man surprisingly did the same.

"Your demonic highness!"

"Ouch, that hurt… Eh?"

The blonde and the two men stared at each other in surprise.

"You speak Japanese?!"

"You can understand us?"

A short silence befell on the group. The blonde glanced at the yellow creature, who was staring at her with a worried expression.

"Chuchu, is something the matter? Ah no, that can wait. You two, um young men… It's not wise to stay here! So, would you please come with me. I have to treat your wounds too and those clothes look too warm and… Strange."

Being too overwhelmed at the strange phenomenon that happened, the men could only stay still as the blonde approached them. Upon closer inspection, the blonde's face seemed more mature than expected. Her serene eyes quickly glanced towards the direction as she pulled the two men along with her.

"Alright, how did you ended up in the alley? I know you're not from Kanto or Johto, did you come from overseas, why are you injured?"

The group was sitting in a cafe not far from the alley. The blonde ordered food and drinks for both men before she began to interrogate them.

"Kanto? Johto?"

"The Kanto region, it's the region we're in and Johto is the region that lies west of Kanto."

"How come my hypnotism did not work on you?"

"Hypnotism? Are you psychic?"

Another term both men were unfamiliar with was said by the woman. After a long pause and awkward staring from both parties the blonde sighed.

"How about we start with introductions first? My name is Yellow, I'm a resident of this city; Tokiwa City and this is my Pokémon Chuchu, she's a Pikachu. My apologies for her hostile behaviour, she's usually very gentle but you two did seem suspicious."

Yellow gestured to the yellow rodent who sat comfortably on her master's lap. Despite its current, comfortable position, Chuchu was still wary of the two across from them.

"And this Tokiwa, is a city of this Kanto you mentioned before?"

"That's right."

Yellow answered honestly.

"And what is a Pokémon?"

"Pokémon, or Pocket Monsters as we also call them, are creatures that inhabit this world. They live in the cities, oceans, forests, mountains, caves and even with us humans. The humans who capture and train them are called Pokémon Trainers. They capture the Pokémon in these devices called Monster Balls."

The dark-haired man stared at Yellow, who took out a metallic round object. The bottom was white, while the top was a transparent red. A button was located in the middle. He turned to Alsiel as if he was giving his approval.

"Very well then, We are demons, beings from a different world, I am Alsiel, demon general and next to me sits the great King of Demons Satan."

Silence fell over the table and the only thing Yellow did was giving them a blank stare.

"… So, you're aliens?"

The serious introduction which Alsiel had given, lost its power immediately.

"A-aliens?"

"Aliens."

Yellow confirmed again.

"I have never heard of such term."

"You know beings, creatures who come from a different planet/ world/ universe or whatever you can call it. No one has encountered one, for what we know at least, so there's only rumours and such, but from what you're saying, you fit the description perfectly."

Satan and Alsiel had no idea if they should feel insulted or not also, the fact that Yellow accepted their story without any suspicion was very surprising.

"So, what brings you two here? I doubt you arrived here to take a vacation or for sight seeing and from the state you two are in you were probably engaged in battle. Were you forced to flee?"

Despite her appearance, Yellow was awfully sharp. The gentle, easy-going expression she previously had was replaced by a serious one, making her seem a few years older.

"You're very observant."

Satan stated as he observed the blonde's reaction.

"Uh, thanks. Most people wouldn't imagine that from me, but I've been through a thing or two. You have to be alert here if you don't want to be ambushed."

While that last comments brought up questions, the two demons decided to keep that for later.

"It is as you said, Alsiel and I were defeated in battle, in order to survive we had no choice but to retreat, our magic has somehow been depleted and we reverted into these human forms."

"Human forms? You're not supposed to look like that and magic you mean like magic tricks or something?"

"No, we don't and the magic demons possess is demonic magic."

"What's the difference?"

That was a question none of them could answer as they had no idea what she exactly meant.

Concluding that she wouldn't get any answer, Yellow continued with the next question.

"And how did you end up here?"

"We used the Gate."

"So, space travelling?"

Assuming that it was practically the same thing, Satan kept silent.

"Well, it's a risky thing to do, especially since you ended up here, but since there weren't any casualties or consequences, you should be fine for now."

"I'm surprised that a child like you can act so natural after everything we've told you."

"Child? I'm twenty-one, I have to admit that this is strange and I still have trouble with believing it all, but…"

Yellow paused in the middle of her sentence and glanced worried at the night sky.

"The world is fast, even with the experience I gained through these short years, I know it's not even close to the amount of knowledge the universe possesses. There is so much we don't know, so much to explore and learn so why wouldn't it be possible for there to be more worlds than one? Life can't be centred around one thing only, there has to be more in the universe, life forms who have a different society, system and culture they don't have to look like humans exactly because nothing is exact the same. I mean you were speaking in a language I could not understand, right?"

While she said that, her expression had become serene, making her look closer to her age. A soft tone of melancholy was present as if there was something she did not tell, it brought suspicion to the two demons.

"What do you mean…"

"Ah, Green-san, over here!"

As quickly as her mood had changed, it changed back to her normal self. The two demons looked up as Yellow waved to a man who was standing a bit further away. The man was quite handsome. He seemed to be close to Yellow's age, probably slightly older. Brown spiky hair and sharp green eyes. He was wearing a black jacket with a white hoodie underneath and brown pants, his expression was cold as he neared the trio.

"I'm sorry for the trouble."

Green didn't answer as he glanced at the two demons suspiciously.

"Are those the guys you were talking about."

"Yes, they are Alsiel-san and Satan-san. They're aliens from another world!"

The bold comment, which Yellow had no problem to reveal made the strange tension between the three men break.

"Has Blue forced you to drink again?"

"I'm not drunk!"

"Have you began to play video games?"

"I didn't and you know that I don't read many novels either, nor movies. While I have to admit this situation sounds like it comes from a fantasy novel, but that's not the point! When I encountered them they were speaking in a language that I couldn't understand and then Satan-san's eyes began to glow and I felt like someone was screaming in my mind or something, my head began to hurt a lot for a second and suddenly I could understand them and they could understand me."

The man named Green stared at the two demons, taking notice of their strange clothing.

"You're not the type to make such things up, anyway. And to think that you're supposed to be the person who stays out of trouble with that personality of yours. I begin to wonder if you're worse than Blue or Red."

"Green-san, that's not very nice…"

Green's sharp remark was treated like air by Yellow.

"So, what do we do then? What are they planning to do?"

"We should provide them with a place to stay. They arrived here on accident and they have no idea how they can return. It's our responsibility to help them."

"Sure, it would be troublesome if they attracted more attention than they already do. But it's a bit late."

The brunet glanced towards his right.

"You two, finish your food and follow me."

After taking a glance at Satan's untouched food, Green began to walk away casually, ignoring the glare Alsiel was giving him.

"My apologies for Green-san's behaviour. He's actually a very nice guy, despite that cold demeanour of his. So, don't take it to heart, he acts like that towards almost everyone. There's no need to rush, so you can eat in peace, you're probably starving and it's no good if you collapse."

Yellow bowed politely as she said that.

Alsiel was about to continue his dinner, but Satan stopped him.

"We're fine, your friend is probably waiting."

The Demon King stood up and headed towards the direction Green left.

Glancing awkwardly at the retreating back of Satan, Yellow threw the remaining dinner, with a feeling of shame for the wasted food, in the trash can and quickly followed Green with Alsiel.

"You can stay at the gym for tonight."

Green said as he placed a card key in front of the security lock which was next to the entrance. After a beep, he typed in a password and pressed a green button which opened the doors. Green entered first, followed by the others. He turned on the light, making everyone flinch for a second. The inside was practically empty, aside from a broken statue near the entrance. The room looked like it was meant as a battlefield or training purposes. Green turned left, where there was another door. Again he placed his card key in front of a reader and opened the door, he entered a hall with a spiral staircase that led to the second floor.

"You can stay in the lounge, I have blankets stored in the closet in the right corner. The couch is a sofa-bed, so you can use that to sleep."

Green turned towards Satan and Alsiel who were giving him strange looks.

"What?"

"May I know, what a sofa-bed is?"

The brunette stared at his blonde friend, giving her a blank stare, Yellow held up her shoulders, not knowing how to respond.

"A sofa bed is a sofa or couch, which you can turn into a bed."

"Such witchcraft exists here?"

Alsiel's tone was shocked.

"We call that product innovation…"

The simple explanation of Yellow had brought a big misunderstanding to the demons.

"Your demonic highness, this world seems to be more complicated that I thought it was. Maybe if we figured out how their magic of product innovation works, we could use it to regain our powers."

"It's not magic it's just product development and technology."

Yellow tried her best to explain an easy concept, but she had a feeling that it would take a while.

Upon arriving at the second floor, Green opened the door to the lounge. He and Yellow walked to the couch and placed the cushions aside, they proceeded by unfolding the mattress and laying out the sheets and pillows that went along with it. While such an action was an everyday thing for the two, Satan and Alsiel, on the other hand, were fascinated by it.

"If it's still uncomfortable, we can get a futon ready too."

Before any of the two demons could ask another question Yellow opened her mouth.

"A futon is a bed consisting of padded mattresses and quilts pliable enough to be folded and stored away during the day. It's perfect use when someone has guests."

"I see, thank you very much for your kindness."

"It's alright, every person with a decent sense of justice would do the same. If I remember correctly, there is a small bathroom on your right, the bandages are stored in the upper row of the closet there and there are towels in the upper closet. We'll take care off anything else in the morning, so rest well."

Yellow bowed once again. When she and Green finished with laying out everything, she bid them a good night and the two left.

"The humans here are really something."

"My liege?"

"She didn't seem the least affected by my magic for some reason and instead of becoming scared, she stayed calm and offered to help, even her companion doesn't seem to care."

"Perhaps the concept of demons isn't well known here in this world. She did call us aliens, whatever that means."

"Very well then, we will learn more about this world through the girl, we must observe the humans and blend in, only then can we find a way to regain our magic and return."

"I couldn't have said it any better, my liege!"

The two demons stepped into the bathroom, inspecting the room until they noticed the sink. Both men stood frozen on their spot.

"Now, how does that shower work?"

Thank you for reading. I know not many people read crossovers and especially a rare one like this story, but I'll do my best to satisfy those who enjoy reading the story. If anyone has any questions regarding anything like characters and such feel free to ask. Chapter 2 is almost ready to be posted. I only need to edit it, so it will probably be up soon.

Some feedback would be appreciated until next time