Disclaimer: I own nothing

A/N: So new story yay! I absolutely love Assassination Classroom and really wanted to write a story about it with another of my favourite anime and manga Katekyo Hitman Reborn. Also I have Tōka as Touka which is technically still correct. There will probably be a lot in the bottom A/N. Also I kinda expect flames with the kinda stuff I have in the first chapter.

WARNING: This story has mentions of death, implied underage sex and pregnancy, OOC characters and it's also a Twin! Fic besides that enjoy.

Nine year old Tsunayoshi Sawada was walking to the hospital again to get his injuries healed. His bullies had gone a little too far in driving home the fact he was useless and broken his arm. His gravity defying brown hair seemed to have lost some of it shine and his brown eyes had dimmed.

'Why is Hiko-nii so mean to me?' Tsuna thought as he continued to walk towards the hospital but as he turned a corner he crashed into someone and they both fell backwards and Tsuna grabbed his left arm and hissed in pain as it made contact with the ground.

"Ow, sorry I wasn't looking where I was going," said a young female voice as they stood up and made their way towards Tsuna, "Are you okay?" asked the girl as she got closer.

"I-I'm f-fine" Tsuna said as he tried to stand up only to wince in pain and grab his arm.

"Touka what have we told you about running a head like that?" Questioned an older male voice as a man, who Tsuna assumed the voice belonged to, came round the corner,

"Sorry Tou-san I just want to get home so we can have dinner," The girl who seemed to be called Touka said as she turned to face the man who Tsuna guessed to be her father. The man then turned his attention on to Tsuna and frown at what he saw. He bent down and looked Tsuna over and saw that he was clutching his arm in pain causing his frown to deepen he reached a hand out to the boy only for said boy to flinch away from him.

"Hey now I'm not going to hurt you. I see that you hurt your arm why don't you come with me and Touka to the hospital to get your arm checked out," Inquired the man as he stood up. He fixed his brown hair that had fallen into his eyes during his talk with Tsuna.

"Kaa-san told me not to go to go with strangers," Tsuna spoke in a quiet voice as he looked at the man with brown eyes that seem to flicker orange for the briefest of moments.

"Well that easy to fix I'm Haruto Yada and this is my daughter Touka," The now named Haruto said. Tsuna took his time looking over the people in front of him the man seem to have dark brown hair and blue eyes along with a rather average build. The girl seemed to be his age, a bit taller than Tsuna with dark brown hair that was put up in a ponytail she also had really pretty purple eyes.

"So what do you say you want to come with me and Touka so we can get that arm looked at?" Tsuna still seemed hesitant even after his eyes flashed orange again.

"Don't worry Tou-san really nice and won't hurt you," Touka said as she gave a big smile at Tsuna. Tsuna looked at her and decided there and then everything would be ok and smiled back at the girl and nodded at Haruto who just smiled back and him and lead the way to the hospital.

This was the day that Tsuna life changed and gained his first real friend.

Tsuna was now eleven and was currently enjoying his summer break with the Yada family over in Italy. Ever since that time he ran into Touka the two had become friend the best of friend in fact. The two did almost everything together. Even though the two had enjoyed themselves over the years that did not mean that everything was okay. Over the years many had tried to separate the two most notably being Tsuna's own twin brother Takehiko but the two had stuck together and only became closer because of it. Touka own parents had started to see Tsuna as part of their own family having him over to play and have dinner and also taking him to the hospital after the bullies got to him. Unfortunately that was one thing that hadn't changed the bullying had continued not that Touka or her family hadn't tried to stop it. Another bit of unfortunate news was that Nana, Tsuna's mother, had started to ignore Tsuna not because see didn't love her son but Takehiko had taken to taking up all Nana's time so there would be none for Tsuna.

Enough about the past let's get on with the present shall we.

Tsuna, Touka and her family consisting of Haruto, her mother, Yuna and her little brother called Riku. Yuna was a rather beautiful woman with dirty blonde hair and purple eyes and a rather curvy figure. Riku was a small 5 year old boy with the same dark brown hair as his sister and father along with brown eyes that he had gotten from his father. These 5 were currently wandering the streets of Rome.

"So what do you think of Rome Tsuna?" Haruto asked from the front of the group of five.

"It's really cool and beautiful thou the roads could be safer," Tsuna replied with a gesture towards the busy roads of Rome.

"Yeah your right there Tsuna-kun but how awesome was the colosseum?" Touka asked as she joined the conversation.

"Yeah it was really cool Touka-chan shame we couldn't get to see the area floor or the basement." Tsuna says as he looks towards Touka only to see her getting dragged into an alleyway along with Yuna. "Touka-chan!" Tsuna yelled as he rushed into the alleyway after them.

"Tsuna! No!" Haruto exclaimed as he tried to grab Tsuna only to be to slow and end up getting grabbed himself by some thug.

"Stop where you are kid and no one gets hurt," Said a thug that seemed to be the leader I Italian which Tsuna only just understood because of his small amount of Italian lessons that he took with Touka and her family. He currently was holding Yuna with a knife at her throat. Tsuna stood there frozen at the sight before him of not only Yuna but also Touka and Haruto held at knife point. The only good point of the situation was that there were only three thugs so no one could grab either Tsuna or Riku.

"Now give us all the money you have and we'll let you go," The thug continued while kept an eye on Tsuna who seemed to be coming back to his senses. Tsuna's eyes were flashing orange as he tried to understand the situation. Something everyone picked up on.

"Shit that can be what I think it is can it?" Thug #2 said towards his leader.

"I don't know but it might be, quick kill the man, throw him off," The leader ordered in rapid Italian not giving Tsuna anytime to understand what was said. As soon Thug #1 heard this he slit the man's throat which caused Haruto to choke on his blood before falling to the floor. Riku let out a loud scream letting out a loud scream which caused Thug #1 to go over to him and grab him by the head and smashing it into the wall.

Tsuna was frozen Haruto had just been killed and Riku had been hurt if not outright killed what could he do? What can he do? Is he going to die?

'No! I can't die he I need to save Yuna, Riku and Touka-chan!' Tsuna thought before exploding into a ball of orange fire.

"Shit! Flame user run for it!" Thug #2 yelled as he let go of Touka and tried to run only to take two steps before he was punched in the gut by a furious Tsuna how had moved too quickly to be seen by the others there. Tsuna then quickly moved to stop the knife that had been coming towards him curtesy of Thug #1 who he quickly grabbed by the wrist and threw him into a wall before turning towards the leader who had just been standing there shaking still holding the knife at Yuna's throat.

"D-Don't take another step forward or I'll kill her," The leader said in an attempt to save his own skin. But due to Tsuna's state of mind he wasn't able to understand and continued towards the man at speed he couldn't follow and grab the man by his wrist before crushing it which caused him to drop the knife Tsuna moved the arm which allowed Yuna to move out of reach. Tsuna then kicked the man with enough force to send him flying down the alley. The flames around Tsuna then started to die down and he began to tire causing him to fall backwards… into a pair of arms?

"Gamma deal with the injured I've got the boy," Command a female voice that came from behind Tsuna as he tried to turn his head to see the speaker only for his vision to blur with the last thing he saw to be a bright orange light.

Around the time that Tsuna exploded into orange flames a woman was walking along the streets of Rome with her blonde subordinate. She has shoulder length dark teal hair that has parts of it braided and tied back on both sides of her head, she has sharp blue eyes. This woman is currently wearing a long-sleeved red shirt with a black necktie along with a black skirt and black high heels. The strangest part was that she had an orange pacifier around her neck.

Aria was walking around Rome as a way to relax after the meeting she had just had with the new Boss of the Chiavarone Famiglia Dino. He was a great leader and she could see that despite being a bit of a klutz he had great combat skills. The meeting had gone well a simple agreement that meant that there would not be any fights between their respective Famiglia.

Aria musing about previous events where interrupted when she stumbled forward after feeling an absolutely massive amount of sky flames being used not far from where she currently was. Turning towards her blonde hair subordinate she asked him,

"Do you feel that?"

"If you mean those Sky Flames yeah I do," Gamma the blonde hair subordinate answered as he turned towards his boss only to see her looking down. Tilting his head down to see what the problem was he felt his eyes widened when he saw the orange pacifier around her neck glowing and seemingly tugging her in the direction of the flames.

"Come on lets go see what this is about," Aria stated before she started to run in the direction of the sky flame user.

Aria quickly arrived at the alley where the fight was taking place and saw the sky flame user. She saw a small boy around 10 or so with spiky brown hair and brown eyes. He also seemed to be only wearing his boxers. Aria could see that the boy was strong, very strong but he was untrained and that thought made Aria feel a small amount of fear that this boy could only get stronger from here. What also concerned her was the fact that the pacifier was drawn to this boy she didn't even know that could happen.

Aria quickly shook her head and took in the situation around her she saw one man that was dead, a boy that was knock unconscious with a girl around the same age as the boy besides him looking between the two boys, a women how she assumed to be the mother of the children quickly moving over to them throwing a glance over her shoulder towards the brown eyed boy with fear and concern in her eyes. She could also she two men knock out against the wall on the other side of the alley. Aria quickly thought up a plan of action and called out to Gamma.

"Gamma deal with the injured I've got the boy," Aria quickly moved forward towards the boy seeing him start to fall backwards. She caught him gentle in her arms before adjusting her grip and slowly moving him towards the other members of what she guessed was his family. See her approach with the boy the dark hair girl leapt towards her and practically ripped the boy out of her arms.

"Tsuna-kun are you okay? Can you hear me? Tsuna-kun?" the girl rapidly questioned the brown haired boy who was called Tsuna while looking him over to see if he had any injuries.

"Excuse me little girl can you please give that boy back to me so I can take them to be healed?" Aria asked as she slowly approached the girl.

"Who are you? What do you want with Tsuna-kun?" the girl questioned Aria in Japanese clearly not understanding what she had previously said.

"My name is Aria and I came here after sensing what your friend was doing. I just want to get your friend healed and ask him a few questions ok? How about I also take your family with us to see if there is anything we can do to help them," Aria explained what she wanted to do in Japanese so the girl could understand.

"Ok but I'm not leaving Tsuna alone with you people I'll stay with him at all time." Touka declared causing Aria to smile at the girl seeing her determination to help her friend.

"Ok I won't stop you miss. Also can you please tell me what your name is so I don't have to call you miss or girl?" Aria inquired as lifted up Tsuna and started to walk towards the car that Gamma had called in the time she had been speaking to the girl.

"Touka Yada, nice to meet you,"

Six months later, Tsuna and Touka were now twelve and were enjoying Christmas in the Giglio Nero mansion in Japan with Yuna, Aria and Gamma. They had exchanged presents that morning and enjoyed Christmas dinner earlier that evening and were now winding down in the living room. The group were now thinking what had happened during those six months. A lot of things had happen; Haruto had been buried when the family had gone back to Namimori, Riku had been admitted to Namimori Hospital in Long Term care ward due to Riku suffering a coma due to the damage done to his head during the fight, Tsuna had learn about the Mafia and how he was an heir to the Vongola Famiglia which he was shocked about but accepted the fact with a little reluctance after Aria explained that she was a Mafia Boss and that not everyone in the Mafia was bad, Tsuna and Touka had also both requested to change class so that they were further away from Takehiko.

The biggest change was the fact that Tsuna had moved in with Touka and Yuna during this time due to the effects the fight had on the three of them. This was done with the permission of Nana who had in fact sign over custody of Tsuna to Yuna this was not due to lack of love the reason in fact of the opposite Nana loved Tsuna so much but knew she was not caring enough for him due to Takehiko taking up her attention and the fact that Takehiko was hurting Tsuna emotionally and possibly even physically. Despite knowing this she could not hate Takehiko and hoped that the time apart would do them good. Was she favouring one son other the other yes… and no another reason she signed other the custody was because she was scared of Takehiko reaction if she were to choose Tsuna over him not only what he would do to her but also Tsuna. She had tried to contact Iemitsu about the change but couldn't get a hold of him.

Yuna would swear up and down that Touka and Tsuna had gotten closer. The two were almost always together and that there had been times that she had check in on them and they were asleep in the same bed as innocent as the act was it did make her worry a bit for them. She knew deep down that Tsuna was likely the one her daughter would marry one day she just hoped it wasn't too soon.

Another change was Tsuna and Touka themselves the two had changed after the attack they wanted to get stronger they didn't want something like that to happen ever again. They had asked for Aria and Gamma to teach them when they saw each other the two had reluctantly agree they were teaching them very slowly on how to use there flames they took it slow but made them master everything them learn. The training had ended in many awkward moments when the two trained together especially when the two were trying to learn Dying Will Mode. The training had had some results such as they were a tiny bit faster and stronger and could access there flames and Dying Will Mode for about 15 seconds for Touka and 30 for Tsuna. Touka's flame had taken them by surprise no one was expecting the girl to have Earth flames and this caused a problem due to the lack of information they had on the flame due to how few users there had been.

There had been many changes in the last six months for Touka and Tsuna but the biggest were still to come.

"Tsuna, can you come here please?" Aria asked as she stood up from her chair in the living room. Tsuna slowly got up from his spot besides Touka on the couch and made his way towards Aria when he was in front of her she put a hand on his shoulder and gave it a squeeze.

"Now I have two bits good news and bad news what would you prefer to hear first?" Aria asked to seemingly the whole room but everyone knew it was directed at Tsuna.

"The Bad," was Tsuna simply reply.

"I'm dying," Aria said bluntly causing everyone present to go quiet.

"What?" Touka exclaimed as she stood up from the couch. "You can't die you Aria-neesan the boss of the Giglio Nero Famiglia, Sky Arcobaleno the world's strongest sky! You can't die!"

"And that is the reason I am to die," Aria said calmly as everyone who had just digested the previous information to go into shock.

"What do you mean Aria? You never told me about this!" Gamma yelled as he stood up from his chair.

"Is this some kind of joke Aria because it isn't funny," Yuna said as she looked at Aria who over the months had become one of her best friends.

"Everyone shut up, sit down and let me explain," Aria said as her 'Boss' aura engulfed the room causing everyone to go quiet and sit down sans Tsuna who remained standing there just looking at Aria, "Thank you now as you might know the rest Arcobaleno are cursed with infant bodies but I am not however this doesn't mean I have nothing to worry about no in fact it's the opposite the Sky Arcobaleno is cursed with a shortened lifespan and I will die within two years."

"Is there anything we can do to stop it?" Tsuna spoke up for the first time since Aria had made her announcement.

"Yes there is and that is one bit of the good news although I would rather not be save because of the cost," Aria said grimly.

"What is it?" Yuna spoke up from her seat.

"A new Arcobaleno must be chosen and the Pacifier has made a choice on how it wants as the new host," Aria explained causing Gamma to go pale.

"No you can't Aria please tell me there's another way," Gamma questioned almost hysterically. Aria just looked at him and shook her head with a look of self-hatred across of her face.

"What is it?" Touka asked the Giglio Nero Boss. This caused Aria to turn and look at Tsuna and look at him with a sympathetic face. "No I won't let you Tsuna-kun is the one of the only people I have left you can't take his away!"

"If I knew another way I would take it without a second thought," The teal hair woman explained.

"I'll do it," Tsuna told them as he looked at Aria.

"Tsuna you can't you'll die and you can't leave me too!" Touka cried as she leapt at the boy and tackled him in a hug.

"Touka-chan even if I don't take the Pacifier now it will just come back to me after Aria-nee has die this way we can her," Tsuna tried to explain to the brown haired girl.

"But I don't want you to die," Touka tried weakly to change Tsuna's mind.

"Don't worry I won't leave you until the day that I die," Tsuna said as he patted the girls back, "before you give me the Pacifier what is the other good news?" Tsuna asked Aria.

"Wait Tsuna you can't just accept this you might as well commit suicide instead of this," Yuna tried to reason with Tsuna.

"But unlike suicide I'll be saving someone life in the process," Tsuna spoke quietly as his eyes took on an orange tint. Before turning his head back towards Aria "So?"

"I'm pregnant," Aria said with a small smile, "three month in fact," this little titbit caused Gamma who had been calmly slipping his tea to choke and sputter.

"So I guess Gamma's the father then?" Yuna asked the teal haired soon to be former Arcobaleno only to get a nod in response.

"I'm so happy for you Aria-nee," Tsuna said happily as he hugged the women.

"And I'm happy for you Gamma-nii!" Touka cheerfully yelled as she hugged Gamma who was still in shock from the news.

"Tsuna you don't have to take the Pacifier straight away you have sometime before you need to take it," Aria whispered into Tsuna's ear while they hugged. Tsuna then leaned back and look at Aria in the eye before he shook his head and then whispered back,

"No Aria-nee the longer you have it the worst you'll get I will take the Pacifier now if that's ok with you." Aria nodded and quickly left the room coming back after about two minutes and standing in front of Tsuna garbed in her Sky Arcobaleno outfit and as if on cue the Pacifier started to glow.

"I, Aria Giglio Nero, here by give up my hold over the Sky Pacifier and my title as the Sky Arcobaleno and pass them on to the third Sky Arcobaleno Tsunayoshi Sawada." Aria recited as she took off the pacifier and placed it around Tsuna's neck. The two stood there for a few moments to see if anything would happen but nothing did.

"Really no flashing lights or anything that's kind of boring," Touka said from her spot on the couch trying to act normal even though everyone around her could tell she was still upset with what was going on. Soon after this was done everyone started to head to their bedrooms in the mansion however one girl was not going to her room and instead headed to another room while staying out of sight of other occupants of the mansion.

"Tsuna-kun," Touka said as she entered said boys room. Tsuna sat up from his place on his bed and looked at his best friend as she entered his room and crawled into bed next to him.

"What is it Touka-chan?" Tsuna asked feeling very nervous about what Touka was doing.

"I want to tell you something very important Tsuna-kun," Touka stated

"What's that?"

"I Love You," The brown haired girl said to the boy who sat there frozen for a moment before his brain reboot and he looked her straight in the eyes.

"I love you too,"

That night an oath was made and hope was created.

Nine months and 3 weeks later on the 16th of October Nozomi Sawada was born.

The Next March the new family moved out of Namimori at the end of the school year and moved to a Tokyo and joined Kunugigoka Junior High School.

A/N: Wow that took a while first question I think I'm going to answer is probably why the hell I implied two 12 year olds had sex and had a kid at 13. Well to be honest I didn't like to do it but it's important to the story as it will be going through both Assassination Classroom's storyline and Hitman Reborn one and Nozomi is import to both more the latter though. Second Why Touka? I think she has potential and is a pretty decent character. I toyed with the idea of Rio but decided against and I sure as hell wasn't going to use Kaede because one her backstory is too awesome and difficult to change and two, I really like Kaede and Nagisa together :D. Another question, why a Twin fic? The answer to that is a secret but the fact it's a twin fic is more important to Hitman story line than AC's but still there's a reason. Also I going to try and avoid bashing anyone except maybe the twin but that's up to you guys. Also this is more about Family than romance in this story but there is still going to be moments and fluffy scenes I mean come on their dealing with Koro-Sensei. So what did you think about the story? Was it good or bad? Too much or too little information? What about Touka's family that I made up? Nozomi? Any questions for me either PM me or review and I'll reply.