AN: Hello, This is my first smut fanfic (and also my first UY fanfic), I didn't wrote this just to wrote a smut lol, but I did it because for the psychology of Ataru. Recently, I was back in Urusei Yatsura (also you can follow me on my twitter captaineverglow and my tumblr lukysmansion for more UY content !) and I had this idea ! With AdvancedAlto's help, I did this fanfic.

Enjoy it ! But don't expect to much smut from this fic, I mean... You'll see ;) In this first chapter for the moment, everything is safe.


Chapter 1: Devil in Disguise

What a mess. Ataru Moroboshi found himself cleaning the classroom with the help of Shuutaro Mendou before being able to leave. In reality, he was the only one cleaning, as his classmate hadn't even touched a broom. He was leaning against the wall, next to a window, reading a book. The brown haired boy gnashed his teeth, mopping the floor forcefully, but when he took a look at the other young man, he just wanted to send the bucket filled with soap and water at his head.

Outside, however, waited two young girls patiently. Lum, who refused to leave without Ataru, because otherwise he would be back later so he could go see other girls. The other was Shinobu Miyake, who was just waiting for the boy from the Mendou family, since he'd promised her that he would take her home. Shinobu was also leaning against the wall, but thoughtful, whereas Lum was looking out the wide open door of the classroom, which stressed her fiancé.

Between the alien's intrusive gaze and his classmate's inaction, Ataru finally raised his voice in the direction of the other boy.

"Hey! Will you stop standing around there and do nothing? I'm trying to get everything done!"

Mendou's eyes moved in his direction, before he slowly closed them while also closing his book. He smiled calmly and put his hands behind his back. He sneered slightly.

"Moroboshi, unlike you, I do what the Teacher told me," he approached the other boy with his eyes closed. "Onsen-Mark has given me this quite different book to read in English and I'm not going to upset him. Very strange that I'm the only one who had the privilege of being given such an exercise."

He opened one of his eyes to look at him. "Above all, it means less homework for us."

"And then what do you have to read to make it so special?" Ataru replied in a mischievous manner. The two girls were both focused on the boys' conversation as best they could and as usual it was going to end badly. Lum knew that in a moment she would have to intervene.

Mendou looked at his book and tried to concentrate better on translating the English title of his book into Japanese.

"The portrait of Dorian Gray. It's about a young boy who sold his soul to the devil to never get older."

"To the devil?" asked the small, innocent voice of Shinobu who had entered the room to join them. The heir turned to her and smiled softly.

"It's a fascinating subject, I think," he admitted. "Even if I think that today, there are surely stupid demons who would be able to find a compromise with the first idiot they meet."

He then turned to the other boy, who grit his teeth.

"Mendou-san, do you think the devil exists?" Shinobu asked again, a worried hand holding his. Unlike the proud smile he liked to show normally, he gave a very comforting smile to the girl.

"Don't worry, Shinobu-san. If he exists then I don't think he's as dangerous as you might think."

Lum had also approached them, suddenly interested by the conversation.

"What do you mean, Shuutaro?" she ended up asking. He looked at his book for a moment and then he looked at the two young girls in front of him.

"There are thousands of madmen in this world who would be willing to sell anything to get what they want," he stared at the other boy, who looked at him suspiciously. "If the devil really existed, then its wishes would be realized and we would live like in Hell."

None of them really knew how to answer that, but Lum was taken by a certain curiosity.

"But Shuutaro, if you had to make a deal with the devil, what would you want and what would you give?" she asked in a tone clearly showing her interest in the topic. Shinobu was quite surprised to hear her ask a such question, Mendou blinked as well. He scratched his throat and then tried to give an example.

"Today I have the opportunity to do things myself." he replied in a very proud tone. "I have no need to make a pact with a creature from Hell."

He looked at the girl with her shiny green hair, waiting to see if his answer suited her. Instead, she turned to the brown haired girl. "What about you Shinobu?"

Shinobu let out a small sound and then blushed in shame. "I… I refuse to give my soul just to have something..."

Lum gave her a look, not really surprised that she reacted like she did. However the three were then quickly interrupted by a sneer from the last member of their group. Ataru couldn't help but laugh at what he heard, which made the alien girl unhappy with her arms crossed.

"Darling, I'm not even asking you. I already know what you want." she said, clearly annoyed as she glared at him. Ataru still laughed as the black haired boy was annoyed by his reaction.

"I guess all you want is your harem, Moroboshi. Besides, is the project still underway?" the question from Mendou was clearly sarcastic.

He stopped laughing as he looked at the other three. He tapped his pocket where he had his little notebook with all the names of the girls he'd met. "Always, always!"

Shuutaro ended up smiling at him playfully, while Ataru in turn crossed his arms against his chest.

"Would you be ready to sell your soul to the devil just to have your harem?" he finally asked, something Lum frowned at. If she didn't ask, it was simply because that she didn't want to know the answer.

The boy in question sneered, hands on his hips and then his head slowly turned to the side, looking at something the the corner of his eye. He spoke in a dark, but playful voice. "To have my harem, I would be ready to become the Devil himself."

He had turned entirely to look at them and noticed the look on their faces. Mendou was hardly amused and regretted his question, while Shinobu just frowned at his stupidity and Lum was ready to explode.

He gave them a big stupid smile and scratched his head as he looked at them. Mendou made a harsh scraping sound against the floor.

"Are you aware of what could happen?" he asked in a very dark and serious voice.

"I never think about what'll happen after my actions!" he replied with a cute voice, like every time when he acted stupid. Mendou wanted to draw his katana and attack him with it, but he was restrained by the gentle gesture of the brown haired girl.

"Mendou-san, let him say whatever stupid things he want and let's go home instead."

He was delighted by his friend's request, so he nodded and left with her.

"Hey, we haven't finished cleaning up the classroom! "Ataru yelled in anger, but the other boy ignored him and left the classroom with Shinobu.

He groaned. If he really was a violent man, he'd have gone after him and dunked in the bucket of water. Unfortunately he wasn't like that. He turned his head to look at Lum, who hadn't abandoned him. He tried to give her a friendly smile.

"Hey Lum, could you help me to finish cleaning?" he asked with the little voice he liked to use.

Lum, however, continued to look at him with exasperation and sparks surrounding her.

"You didn't think about what you said?"

Ataru rolled his eyes, irritated enough that she apparently wasn't willing to help him. He just sighed.

"Answer me!" she insisted.

"No, I was joking!" he replied immediately, hoping to please her, something that was rare, but he knew that was the answer to give if he wanted a helping hand from the young alien.

Lum wasn't too convinced but still took the broom and without looking at it, she began to float so that her feet didn't touch the wet ground.

"Darling, you idiot ..." she whispered.


On the way back, Ataru hadn't found a single pretty young girl to approach. It was too late because of the cleaning and the discussion with Mendou. He groaned as he thought of his departure, having left him hanging. He hadn't even helped him from the start. At home, it was pretty quiet. Usually there was always the noise of conflict between him and Lum's cousin, Jariten as he liked to call him. However, the meal went well and there was no big problem. It was one of those evenings where it everything was alright.

In his chair, Ataru was reading one of his regular manga, while Lum was making the bed for the night. When the young alien finished, she turned to the boy she loved, who wasn't looking at her. She was stroking the head of Ten, without breaking the look she gave the human boy.

"Darling, I'm worried about you." she ended up saying in a soft voice.

The boy still didn't look at her, choosing to keep reading, but he had heard her. Her question hadn't been unexpected. "Why?"

She looked at a spot in the room, searching for the exact words she had to say.

"It's just... You know about what happened."

Without looking up from his manga, Ataru thought about what had happened and he sighed mentally. "I told you it was a joke."

"I'm not really talking about that."

This time he was finally taken by curiosity and lowered his manga to look at the girl with blue-green hair.

"What are you talking about?" he asked with an annoyed tone. She bit her lower lip and ended up looking at him seriously.

"Are you still seriously thinking about this silly dream?"

He frowned, annoyed as usual by this girl. "What? Do you have a problem that I'd like to have a harem?"

She groaned and began to float towards him. "Yes! Because I find it just horrible that you tell me that there are other girls in your life!"

This time, Ataru didn't get angry, but was still annoyed by the situation. He scratched the back of his head and still looked at the girl with half closed eyes.

"Don't be jealous, Lum. You'll also be part of it."

She blinked, quite unhappy with what he'd just said, but first she looked oddly naughty, as if trying to test something. Approaching him, she placed her hands on his shoulders and brought her head closer to his, entering his personal bubble.

"And would I be your favorite?"

He turned his head in another direction very quickly.

"Are you kidding? I wouldn't have a favorite! I love you all the same!" he replied quickly.

This time, Lum groaned while making sparks dance around her, annoyed with what he'd said.

"Well, I would never be part of your harem!" she declared loud and clear.

He looked at her again with a strangely angry look. If Lum refrained from shooting lightning at him, Ataru letting his anger bubble ul. He quickly rose from his seat to confront her. "You'll be part of it!"

"And why should I? I don't want to be part of it!"

An argument like one between a married couple began. Lum was ready to attack him with her electrical powers, while Ataru was ready to dodge and defend himself.

"Idiot!" Ataru shouted, louder than earlier. "You want me for yourself! You're really selfish to not share me with the others!"

"Me? Selfish?" she kept going, even angrier now. "If I'm just a selfish person, then you're a hypocrite! You only want me in your harem, but you never cared about me!"

Strangely, her words reached him more than what she used to say and he felt… hurt. Grinding his teeth, he walked towards her.

"Are you kidding me?" he asked in a duller voice, then his anger began to bubble up again. "Why do you want to deprive me of my happiness, Lum?!"

"How can you call it happiness?!" Lum responded upset.

Before he answered, he approached her, but he hit his foot against something and fell forward, dragging the alien girl with him. He was lying on her and they were very close, their bodies pressed against each other.

Ataru looked into her blue eyes. It was strange to him. He'd never noticed how her eyes were so different of those from any other girl he'd seen. They were so unique. That and the fact of falling against her got his heart beating even faster. The boy became bitter when he felt it. He had never really had a beating heart that way, except when he was very scared, often because of his mother, but never for a girl. He had to admit that it wasn't the first time that his heart was beating for her, besides, she was the only one for whom his heart was beating.

Trying to take a breath, he withdrew from her and sat on his side, turning his back to her and attempting to calm down his heart. He heard her get up behind him, but he didn't look at her. None of them said anything yet. Only Ten's little snores broke the silence. Finally, he heard her take the child in her arms. He watched her discreetly go to the closet.

"I'm going to bed." she said in a low voice, taking off her boots.

Opening the closet, she placed Ten on the futon at the top of the closet and then settled in.

"Good night." she didn't wait for an answer as she closed the door.

He exhaled slowly. Once again he'd taken the lead with her. His heart kept beating, but this time he felt fear. Would she be angry again tomorrow? He reassured himself mentally that Lum was Lum anyway and that she'd never be mad at him for too long. Exasperated, he got up first to turn off the light and then placed himself on his futon, the comforter pulled over him, and looked out the window. With tired eyes, he waited for sleep, although his heart finally calmed down. He also tried to forget about today's conversation. The easiest way to fall asleep was to stop thinking of anything.

No sooner had he closed his eyes was he seeing that his room was slightly colored red. He stood up, blinking, and looked around. No, his room was dark due to the lack of light, that was normal. Why did it suddenly turn red? Surely the tiredness to blame. He laid back down, head in pillow again, gently closing his eyes and tried to think of beautiful young girls to accompany him in his sleep ... In a strange room which was colored red.

What? Again this red light. He decided to open his eyes and get up, noticing that in the end, he was no longer in his room at all.