This is my story for Assassination Classroom with my OC's involved.

The students of Classroom E were just returning home after their school trip had ended. They had only a few days left of summer to enjoy before continuing on with the fall term. Most of them spent their remaining freedom at home or with family. Nagisa, whose mother was out on a business trip, wouldn't be home for the remainder of summer. He thought he'd mind as well just take things easy as much as possible. Just as he turned in his sheets to cuddle with the soft pillow he barely had the privilege to snuggle to like this, a vibrating sound of his phone could be heard on the bedside table closest to him. Someone was sending him a message. Rubbing his eyes, he groggily sat up to grab his phone, thinking maybe it could have been from his mother. But when he looked at the name of whom the sender was, it came out as Akabane Karma.

Looking through the contents of the message, the first thing he saw was a picture of a game that Nagisa and Karma had been wanting for quite some time now. The blue haired boy sighed, thinking Karma must have sent the picture to tease poor Nagisa who couldn't get the game just yet. Still, he wondered how he got the game. Did his folks send him the money in order to purchase it? His parents were always negligent of him, traveling around the world. They were rarely ever at home. Though Karma didn't seem to care, enjoying the freedom that resulted from their absence.

Just as these thoughts flowed into his mind, his phone began to ring. Speak of the red head devil, the name displayed on the phone was Karma's. Nagisa pressed on the button to answer the call.

"Hey Karma, I saw the messa—" Nagisa began to say, until he was interrupted by another voice. This one sweeter and spoken in a different language then his Japanese.

"Nagi-aîné, you are awake, I take it?" replied the voice in english. He knew very well who'd use that honorific to greet him and grinned, unaware of the small blush.

"Utsuki-chan, good morning. And yes I'm awake." It had been a while since he heard the assassin's voice—or better known as—ex-assassin, Utsukuchi. Nagisa and Karma had meet the young girl a bit after they had returned on their crazy trip to Hawaii with Koro sensei. How did they get back to Japan in under a few hours? Well their teacher was a monster. But that can be explained in another time. So, as the boys were making their way home, they noticed in an alleyway, a girl severely injured and almost out of breath. She had long, burgundy red hair and red eyes. When Nagisa noticed the girl, the first thing that came to mind was how her hair was so similar to the color of blood. Though Karma had red hair as well, this girl's was more striking. But in its way, made it hard for one to remove one's gaze off the girl. They eventually got her to Karma's house. She didn't speak much about her past; saying she didn't want to think about it. Only that her profession was that of an assassin and that she decided to leave her profession behind for personal reasons. Regardless, the two became grateful of having meet her. Sure she didn't know much Japanese; English, French, along with a few other languages, being her primary ones. Which was fine, since Karma and Nagisa knew at least some English as well. Her accent would always show when she spoke Japanese, but neither of them teased her about it, not wanting her to be discouraged from learning the language they spoke.

Yet it was because of her persistent attitude that the boys grew fond of her. She was always curious to learn something new. If any of them did homework, she'd sit next to them and performed some of the equations. She was rather intelligent, making them wonder if she was home schooled at some point. She was also interested in anything they liked to watch or play. Which was the best part, they could share with her almost anything and they'd immediately have her attention. Of course, they haven't introduced her to their friends and classmates just yet. They didn't want to force her to meet new people if she wasn't ready.

Most of the time, she was in Karma's house. And if Nagisa's mother was gone, she'd come over for a weekend (since his mother's business trips were usually from Friday to next Monday) and spend time with him. With Nagisa owning a lot of feminine clothing (due to his mother's desire of wanting a girl rather than a boy), he'd offer some of the clothes to her so she may wear, which she accepted of course, not having brought any with her when she had run away.

Now thinking about his mother's absence, he wondered if he should invite Utsuki-chan over. After all, he wanted to see her. But would it sound odd? Usually when he did, she didn't seem to disagree. Though his jumbled thoughts were interrupted again as the voice from before spoke up again.

"Nagi-aîné? Oi, did something happen? Hello?..." Nagisa gasped, causing the phone to fall onto the pillow, making it go into speaker mode.

Utsuki seemed to notice this, with what she said next, "Is everything alright? I didn't mean to startle you…"

"N-No, it's fine—"Nagisa mumbled, before picking the cell back up again. This time blushing in embarrassment. He hoped she wouldn't ask him any further as to why he had suddenly become quiet and dropped his phone. And luckily, she didn't press him on about it either.

"Well, Akabane-frére and I are already at the door of your apartment, if you wouldn't mind opening up for us." At this, Nagisa's eyes went wide.

"W-What?!" he jumped out of the bed, still overcome with shock. They were here?!

From the phone's speaker, he could hear a sound as if the phone Utsuki had been using was being moved around before another voice spoke up.

"Sorry Nagisa-kun, but once I showed her the game, she was hell-bent on us playing together." Karma replied in fake apology, the hint of mischief in his voice gave the illusion that he had something to do with it all. Seeing as this was an opportunity to see Nagisa when he was ill prepared to greet his 'guests'.

"Karma-kun, you could have at least called—" yet again, he was interrupted. "But Utsu-kun already did, didn't she?" the older male replied, provoking another sigh from Nagisa.

"Yeah but that's besides the poin-", as he was saying this, he could hear some jiggle and scratching sounds coming from the front door of the apartment. W-Were they trying to break into his house?!

"KARMA!" Nagisa shrieked, now standing in his yellow, long-sleeved pajamas.

"Well we can't keep standing out here all day, right?" even though he couldn't see it, Nagisa could tell that Karma had said this with a smug look on his face.

"Can't you just wait for 10 seconds?!" Nagisa shouted back, only to get a chuckle. That was not good…

"Eh, 10 seconds you say? Alright…." Karma replied before beginning to count down from ten.

"10…9…8…7…" The blue-haired male's eyes widened in further disbelief, Karma took what he said seriously! He quickly grabbed anything he could wear to replace his pjs. He couldn't fix his hair, deciding it was best to quickly brush his teeth. His friend was still counting down, getting closer to one.

"4….3….2…" Nagisa ran as fast as he could, opening the front door. Karma and Utsuki stared at the male before Karma began to break down in a fit of laughter.

"I can't believe you actually did that! And what's with the outfit?~" Karma asked as he continued to snicker. At that moment, it was then that Nagisa looked down to see what he was wearing. When he saw, he wanted to keel over and die. He had put on the ridiculously embarrassing shirt with the mascot of some anime show a bunch of girls were crazy about. Along with pink shorts. His hair a mess and barefoot. How could things get any worse? He blushed indignantly, giving a short glare to Karma then looked to Utsuki, who had placed a finger to her lower lip. She was studying the male with an intent gaze, it made Nagisa blush more, thinking she thought he looked like the biggest loser ever.

"Cute…" she spoke up, this shocking both Nagisa, and Karma, who had stopped laughing as she said this. "H-Huh?..." Nagisa stammered as she approached him, she bent forward a bit as she looked at the mascot again. "Is this Umaru-chan? I was hoping I'd ask Akabane-frére if I could acquire any of the merch. It looks really cute on you, Nagi-aîné" Umaru was a chibi sized girl, who was obsessed with anime and video games. This manga/ anime mascot became very popular. Even a few boys watch the show. He imagined that Utsuki had seen the show on days that Karma and him were at school.

"I'm guessing mom must have got it while one day at the supermarket…" Nagisa replied, not too sure how the shirt was in his room, but having a good guess, his mother had to have been the one to purchase it, in hopes that he'd wear something so adorable himself.

"Lucky…" Utsuki answered, causing Nagisa to grin. "Well, how about I wash it for you, and lend it to you later…" he replied, grinning wider as she gasped. "You mean it? I can wear it?..." she asked, pointing at his shirt. "Of course." He answered, grinning wider as a small smile appeared on her face. Utsuki usually didn't display much emotions. So when either boy could make her smile, it felt just as great as passing their school's rough exams.

Karma observed them both with a blank expression. It was something, he had even noticed, he'd begun to do more increasingly when Nagisa and Utsuki were together. After all, he was used to getting Utsuku's attention, since she practically lived with him. Plus, Utsuki was so easy to talk to, at least for him it felt like it. His parents never really bonded with him and most others were too scared to even approach, due to his violent and sneaky nature. But Utsuki didn't seem to mind his nature at all. It made him glad that he didn't have to pretend to be someone he wasn't. With Utsuki, he learned to lower his guard. Something he hadn't done in so long.

Being it only them, Karma usually did the cooking. He made sure to finish up his assignments before making it home, so that he can make up for her being alone at home with a good old gaming marathon, unless he found a good movie while on the way home. On special days, he'd make it up to her by taking the red-eyed girl to the arcade. The smiles she'd give him in return were what inspired him into continuing to do so. Which was why it was giving Karma a nagging feeling, seeing her smile like that and it not being to him.

He gripped the video game's box, deciding it was best to not let them see how this was affecting him. Nagisa was his friend right? And with Utsuki being excited to play the game with them, he couldn't ruin it for her.

He put his usual smile and approached them. Deciding it best to take out these pent up emotions by teasing his gender-confused friend. He took out his phone and waved it to the ponytailed male, capturing a picture of Nagisa before the boy could hide himself. Karma laughed and got up, running away from a pissed Nagisa who wanted to take the camera from him. Utsuki watched them both in confusing, bending down to grab the video game Karma had dropped.

"You guys, aren't we going to play?" she'd asked with a slight pout as Nagisa continued to chase the older male.

"Karma, give me the phone!" he yelled, though each time he thought he got him, Karma had slipped out of his grasp, taking a quick turn and back they were at the chase.

"No way! There is no way I'll let you live it down~" Karma sneered, his little devil like horns and tail comically appeared as they usually did when he was at his tricks. Still, as he ran from the angered boy, he couldn't help the small sad grin forming on his lips. This was the role he was forced to play, in order to keep his friends happy. Though he wouldn't say it aloud, even he was afraid, of what may happen if this friendship were to fall apart.

Side notes:

* Nagi-aîné: aîné is a French term for "senior"; Utsuki uses this term for Nagisa since she sees him as her senior/senpai
*Karma-frère: frère meaning "brother" in French; since they are at home like siblings, she calls this family term for Karma