Summary: Shuzo Nijimura was Sepira's brother, Co-Founder of the Giglio Famiglia. He has the Mare Rings. He protects and is fond of the Sky Arcobalenos; because they are of his sister's blood. Aria dies earlier than in the anime. Yuni is Tsuna's age and the Sky Arcobaleno. None of the Arcobalenos have harmonized with any of the Sky Arcobalenos. Not even Luce. Lambo and I-Pin are Tsuna's age.

AN: Co-Authored by PaperFox19. PaperFox19 will be writing all of the fight scenes for this fic.

Disclaimer: All publicly recognizable characters, settings, etc. are the property of their respective owners. The original characters and plot are the property of the author. The author is in no way associated with the owners, creators, or producers of any media franchise. No copyright infringement is intended.

Chapter 1

-8 Years before the Anime Starts-

Nana Sawada was worried about her beloved 5 year old son, Tsunayoshi. Tsuna for short. Ever since her husband and his employer came for a visit, her son has been different. He has been clumsy, and accident prone. Nana did not know what to do for her son. She was cooking lunch for her son when there was a knock on the door.

"I wonder who that could be." Nana says as she walks over to the door and answers it. She sees to men standing there. The first man has short, slightly curly hair that reaches his lower neck, and is parted on the left side. He was wearing a black suit coat, a white striped shirt, a tie, and black shoes. He looked to be her age. He also had purple eyes. The other man has short black hair with bangs parted to the left and has light grey eyes. He was also wearing a black suit. He looked to be in his 20's.

"How may I help you gentlemen?" Nana says.

"Yes, is this the Sawada residence, and are you Nana Sawada?" The man in his 20's asks.

"Yes, it is and that is me. How may I help you?" Nana asks not knowing who these men are.

"May we come in? We would like to talk to you about your son." The man in his 20's suggests.

"Oh, where are my manners. Please come in." Nana ushers them in. The men sit at the kitchen table.

"Would either of you two like some tea?" Nana asks politely.

"No, thank you, ma'am." The older man says. Nana sits down.

"So, what is this about? You said you wanted to talk about my son?" Nana asks.

"We'll start with introductions. My name is Shuzo Nijimura and this my subordinate, Katsunori Harasawa." The man in his 20's, Shuzo, states. He then goes onto explain to Nana everything. The mafia, her husband, his Famiglia; everything. Nana was in shock. She did not know what to think. All she knew was, she felt hurt and betrayed by her husband's lies.

"Could these "flames" be the cause of my son's changes?" Nana asks trying not to cry.

"What do you mean?" Katsunori asks. Nana then explains her side of things. The men were shocked. They knew what had been done, and how dangerous it was to do to someone.

"Can we see your son, Nana-san?" Shuzo asks.

"Yes, of course." Nana says as she gets up to get Tsuna. She walks back down with Tsuna in her arms.

"Now Tsu-kun, these nice men are going to have a look at you." Nana explains as she places Tsuna on the coach. The all have moved to the living room. Tsuna was a little scared. He has never seen these men before, but he trusted his mother. Shuzo kneeled down to Tsuna's eye level.

"Don't worry, Tsuna. We will not hurt you." Shuzo says reassuringly.

"Okay." Tsuna says shyly. Shuzo places his finger on Tsuna's forehead. His sky flames light up on his finger.

"Yes, it's just like I thought, there is a block on his flames." Shuzo explains grimly.

"Can you remove it?" Nana asks worriedly.

"Yes, if you want me too?" Shuzo says confidently.

"Will it hurt, Tsu-kun?" Nana asks.

"No, he will only be tired and a little weak afterward." Shuzo explains.

"Then please do it. Remove the block." Nana says. Shuzo nods and flares his sky flames to break the block on Tsuna's flames. The block breaks and Tsuna collapse from the shock of it.

"There it has been done. If you do not mind, I would like to train Tsuna on how to control and use his flames. That is if you do not mind?" Shuzo asks. Nana picks up her son to put him to bed.

"Yes, please. I do not want my Tsu-kun to get hurt or be hurt." Nana says in agreement.

Over the next 8 years, Shuzo trained Tsuna on how to use and control his sky flames. Katsunori and Nana were also got real close during those 8 years; so, close that Nana filed for divorce. But, there was no reply from her lying, good for nothing, husband. Katsunori became the father that Tsuna never had before. Shuzo had to leave to go back to Italy. Katsunori stayed though with Shuzo's permission. Tsuna is now 13 years old.

-8 Years Later: Start of the Anime-

Tsuna was just finishing his breakfast when his mother came in with the mail.

"Look Tsu-kun, I got you a home tutor." Nana says happily.

"Bu mom, I don't need a tutor. I get straight A's." Tsuna says in confusion. Before Nana could explain herself, she was interrupted.

"Ciaossu, my name is Reborn, and I'm the home tutor that you hired." The man/baby says. Tsuna's sky flames could tell this was no ordinary baby. His aura was to mature and strong to be an ordinary baby. Tsuna looks the "baby" over and stopped at the yellow pacifier hanging around his neck.

'That's why. He's an Arcobaleno. Shuzo-shisho told be about them since his niece is the Sky Arcobaleno. Yellow pacifier, then that must mean he is the Sun Arcobaleno.' Tsuna thinks. He then looks at the clock.

"I better get going. I do not want to be late for the Student Council meeting. Bye mom!" Tsuna says as he kisses his mother on her cheek then heads to school. Tsuna walked a block then noticed Reborn was following him.

"Why are you following me to school?" Tsuna asks.

"Well, if I'm going to be your tutor, I need to see how you are at school." Reborn explains.

"I see. That makes sense." Tsuna says smiling. They walked a few more blocks when they ran into one of Tsuna's classmates, Kyoko Sasagawa, the idol of Namimori Middle School.

"Good morning, Tsuna-kun, and who is this with you?" Kyoko asks with a smile.

"Oh, good morning, Kyoko-chan. This is my little cousin. He will be staying with family for a while. What are you doing on this side of town? Are you taking a different way to school?" Tsuna asks.

"Yes, I am meeting Mochida-kun. We are going to walk to school together. Well, I better hurry if I want to meet him. See you later, Tsuna-kun." Kyoko says as she runs off ahead to meet up with, Mochida. Tsuna waves good bye to her then sighs when she is out of sight.

"Do you have a crush on, Kyoko-chan?" Reborn asks.

"No, I do not. I just like her as a friend. I just hate her taste in men. She could do so much better then, Kensuke Mochida." Tsuna explains with disappointment.

"And why do you not like this, Kensuke Mochida?" Reborn asks.

"Because, he is an arrogant ass. He is a bully and needs to be taught how to treat a woman. His attitude sickens me." Tsuna says in disgust.

"Have you tried telling her this?" Reborn questions.

"Yes, but her friends just say I am jealous of her for having a real man. Che, yeah right, like I would be jealous. I already have a real man, thank you very much." Tsuna says proudly. Reborn was curious about who he was dating. Tsuna finally arrived at school.

-Namimori Middle School-

After Tsuna met with the Student Council, who wanted him to help them get back the room Hibari took for the Disciplinary Committee (which he did not give), he went to class. The teacher was handing out the tests they took yesterday.

"Good work as always Tsuna." The teacher says in a proud tone.

"Thank you sensei." Tsuna says with a smile. Class went on. While Tsuna was in class, Reborn was having a dilemma.

"Tsuna is nothing like how Iemitsu reported. Tsuna's grades are prefect, he is part of the Disciplinary Committee as a secretary, and helps out the Student Council. He is good at sports which means his is athletic. I can also feel his sky flames which are very strong. My flames are even reacting to his. I wonder…could he be the one to finally harmonize me? Could he be my sky?" Reborn says with hope. Reborn shakes his head.

"Well in any case, this just makes my job easier." Reborn says with a sigh.

-Back with Tsuna-

It was the end of class. Tsuna was getting ready to go home when one of Mochida's friends says Mochida wants to fight Tsuna. In a Kendo match and if he wins, he has to be his slave; and, he also wants Kyoko as a prize too. Tsuna was pissed. He would never allow this to happen. He would kill Mochida before he allowed any of this to happen. Tsuna walked to the Kendo Club with Reborn riding on his shoulder.

"So, are you going to fight, Mochida; and, not run away?" Reborn asks.

"Of course not! I am not running away. This bastard needs a lesson in humility." Tsuna declares angrily. Reborn smirks at this. Tsuna walked into the Kendo Club, and took his place across of Mochida.

"I will explain the rules…" Mochida was interrupted.

"I already know the rules." Tsuna says. 'Thank you, Tsuyoshi-san.' (Yamamoto's dad).

"Alright then, I will explain the stakes. The stakes are, if I win you have to be my slave, and Kyoko-chan becomes mine." Mochida explains with a smirk.

"And if I win, you leave Kyoko-chan and I the hell alone!" Tsuna says fiercely. They got into their fighting positions. Tsuna thought he had this, in truth Mochida was just a bully all talk and no tact. 'I can do this.'

Mochida smirked, and his eyes drifted to the ref. He was one of his club members and had been paid handsomely to make sure he won. 'You'll be mine soon little Tsuna, I'm gonna enjoy having you as my own personal slave.' Mochida drooled a little and wiped his chin. Reborn felt the urge to shoot this guy on principle, but this was Tsuna's fight. "Begin!"

"Haha, you are mine." Mochida rushed at Tsuna and Reborn was quick to analyze.

'Form...atrocious, openings...too many to count, chances of victory...zero.'

Mochida swung wildly, and Tsuna dodged. Again and again, Mochida was swinging like an ape; and, he looked so surprised each time Tsuna avoided him. His stance firm. Reborn smirked. Tsuna had no openings while on defense.

"Damn it, why won't you stay still." Mochida yells as he rushed forward and Tsuna blocked with his sword. He acted fast and made a counter and sent Mochida flying back on his ass.

It was a clean hit but the ref didn't call it. "Hey, what's the deal?" Tsuna looked to the ref and that's what Mochida wanted.

The brunette let his guard down, and he quickly swung his sword with both hands and knocked away his sword. "Hey!"

"Now I got you!" Mochida swung his blade down. Tsuna caught it with both hands.

"I don't think so," Tsuna yanked away Mochida's sword, and he knocked Mochida back again. Again the ref didn't call the point. "What again?"

"Forget the swords let's turn this into an all-out fist fight." Mochida put up his dukes, and rushed at Tsuna. It took one chop and Mochida was knocked out lying flat on his ass. The ref began to sweat.

"Still nothing, alright then." Tsuna began to wail on Mochida a chunk of hair getting ripped out. The ref cried not sure what to do. Tsuna kept striking and Mochida lost more and more hair until he had a huge bald spot, he looked like a kappa. The ref finally gave in and surrendered the match to Tsuna.

Reborn laughed. Mochida would be needing a rug, or a hat for the rest of his life.

"It's my win. You better keep your end of the bargain; and, or I will allow my boyfriend to "bite you to death." Tsuna says as he begins to walk away. The students watching began to cheer.

"Tsuna-sama is so cool!"

"Even though Mochida was cheating, Tsuna-sama still won!" Was some of the things the students were saying, Mochida finally processed what Tsuna had said.

"W-Wait, your boyfriend?!" Mochida exclaims.

"Yes, my boyfriend." Tsuna says over his shoulder.

"Who the hell is your boyfriend?! I can be a better man then him! I can satisfy you way better than he ever could!" Mochida says confidently. Tsuna shakes his head in disgust.

"My boyfriend is Kyoya Hibari. You could never satisfy me better then Kyo-koi does. I would not allow you to touch me, ever!" Tsuna says then leaves the Kendo Club.

"K-Kyoya Hibari." Mochida says in dread. He then felt a deadly aura coming from behind him. Mochida turned around and saw…Kyoya Hibari!

"So, you thought an herbivore like you could take Tsuna-hime from me. I'll bite you to death!" Kyoya declares and proceeds to beat up Mochida.

-With Tsuna-

Reborn was proud at what he saw. Tsuna can defiantly fight. Tsuna and Reborn walked home, and as they walked home, Reborn tells Tsuna about being the Vongola Decimo, a big time mafia Famiglia. Tsuna already knows all of this thanks to Shuzo-shisho. Tsuna was kind of excited of the adventure that awaits. Reborn was surprised at how well Tsuna was taking to be being the leader of a big time mafia Famiglia.

-Sawada Residence-

"How was your day at school, Tsu-kun?" Nana asks.

"It was fine. I got an A on my math test." Tsuna answers.

"That's great dear." Nana says proud of her son.

"Welcome home, Tsuna-kun." A voice says coming down the stairs. Tsuna and Reborn turned toward the voice.

"I'm back, Katsunori-papa." Tsuna says brightly. Reborn on the other hand was in shock.

'What is Trident Shamal's older brother doing here?!' Reborn thinks in shock.