Ehem, so. My first story. Quick Disclaimer: I definitely don't own Katekyo Hitman Reborn, if I did, Mukuro and Chrome would already be together. ehehe.
This isn't the best story out there, but I'm hopeful. Also, quick note, if you already KNOW the characters well, you can basically skim the character description paragraphs, and if you haven't finished hitman reborn past the future arc, there are some spoilers...
Prologue
It was a Wednesday and for once Tsuna had gotten up the nerve to ask Kyoko over to his house, and as that somehow meant to Ryohei that he was allowed to come too, Yamamoto, Gokudera, Tsuna, Kyoko and Ryohei were all walking over to Tsuna's house. They got over to the four-way intersection when something unexpected happened. All three of the boys tackled Tsuna at once, and Yamamoto whipped out his Shigure Kintoki, neatly deflecting the three intricately carved knives that had almost buried themselves in Tsuna's side.
Gokudera, who recognized the knives as being Belphegor's, yelled, "Bastard! Come out here and fight!" as he readied his dynamite.
But to his surprise, as well as the others', what came out of the sky was a girl. She was petite with long blonde hair tied in a bun at the back of her head. She had round brown eyes and a strong frame. Her clothing was strange. She was wearing a pair of tattered khaki pants and a purple t-shirt, something not commonly seen on Japanese girls. She was also wearing a pair of sneakers, with silver-lining on the bottom. She sported a dark armband on her right arm. The symbol on the band was a clam, outlined in orange flames and colored like the sky. The startling thing though, was that her brown eyes, were just like Tsuna's or Mama's, and something about her face seemed familiar to Gokudera, as well as to Tsuna.
She surprised everyone by speaking in a quiet, calm, precise manner. Turning to the first person facing her, who was Yamamoto, she said,
"Yamamoto Takeshi.
Attribute: Rain
Weapon: Shigure Kintoki
Childhood: Grew up in Namimori all your life, a popular kid and a baseball fanatic. The son of a sushi restaurant owner, you became the inheritor of the Shigure Souen Ryu sword style when training for the Ring Battle with Varia. You believed that the mafia was a game until you were transported into the future for the Millefiore battles.
Box Weapon and Cambio Forma: Jiro, Kojiro, and the four irregular swords of Asari Ugetsu."
Gokudera, incensed, yelled, "Why you…! How do you know about the Vongola Boxes?"
That was a bad idea, because she turned to him and said,
"Gokudera "Hurricane Bomb" Hayato.
Attribute: Storm
Weapon: Dynamite
Childhood: Born the illegitimate son of a mafia boss, when you found this out, you ran away from home, working on the streets and for other mafia families, using the dynamite Trident Shamal taught you how to use. When you see your sister you become ill, though she is unaware of this. You recently discovered that your mother refused to marry your father because she was fatally ill, and that was the true cause of her death. When you came to Japan, to test the destined Vongola tenth, he saved your life and you became his overzealous right-hand man, despite the fact that this overzealousness actually creates more problems for your boss.
Box Weapon and Cambio Forma: Uri, System CAI, and G's Archery."
She turned to Ryohei,
"Sasagawa Ryohei
Attribute: Sun
Weapon: Fists
Childhood: Grew up in Namimori your whole life, and became an extremist, constantly training your body for the sport you love: boxing. You didn't understand much of what was going on until you were taken to the future, similar to Yamamoto. You promised your sister never to fight, or to only win when it was necessary. Though you have lied to her on occasion to protect her.
Box Weapon and Cambio Forma: Garyuu and Knuckle's Maximum Break."
Kyoko blinked in slight surprise, despite already knowing about the mafia, she had to wonder to herself when had her brother ever lied to her. Though it was an insignificant action, it brought on the attention of the strange girl.
"Sasagawa Kyoko
Attribute: None.
Weapon: None.
Childhood: Grew up in Namimori, and became the idol of Namimori Middle School. Worried by your older brother's strange behavior around the time of the Ring Battles, you didn't understand what he had gotten himself into until you were transported into the future, and forced Tsuna to tell you what was going on. Unbeknownst to you, you actually helped Tsuna figure out how to open his Vongola box safely.
Box Weapon and Cambio Forma: None."
All of a sudden, a loud, "Tsuna-san," which they all recognized, was heard and Haru came running in. Panting she noticed the girl and said, "Hahi! Who is this?"
The girl turned to Haru and impassively said,
"Miura Haru
Attribute: None.
Weapon: None.
Childhood: Grew up in Namimori and attends Midori Middle School, a private school. However, you have always had few friends because of your spunky and eccentric manners. When you met Tsuna you believed that he was corrupting the baby Reborn, who is, in fact, an arcobaleno, and so attempted to fight him. However, when he saved your life, you fell in love with him and plan to marry him. You were another one who did not understand about the mafia until you were taken to the future.
Box Weapon and Cambio Forma: None."
Then, as if on cue, Lambo jumped in and said, "Lambo-san has arrived!" of course, immediately following, I-pin came in, chasing Lambo.
Tsuna yelled, "Lambo, I-pin! What are you doing here?"
I-pin looked up and said, "Mama was worried."
The blonde girl turned to Lambo.
"Lambo
Attribute: Thunder
Weapon: Grenade
Childhood: A failure baby assassin of the Bovino family, your boss sent you here to defeat Reborn, though in actuality to get rid of you, knowing that you would never be able to defeat the arcobaleno. However, by some miracle, you became adopted into the Sawada family. Even though you are technically a Bovino, and are the only one still totally oblivious about the situation surrounding the Millefiore, you have been accepted as Vongola tenth's Thunder guardian, much to the excitement of your boss.
Box Weapon and Cambio Forma: Beef Bowl and Lampo's Shield."
She then turned to I-pin,
"I-pin
Attribute: None.
Weapon: Gyoza Fist
Childhood: A martial artist, you were trained by the storm arcobaleno Fong in the Gyoza Fist style. When you grow up, you will forsake martial arts and go to college. You will also work in a ramen place. In specific, delivering to Kawahira, who holds one of the Hell Rings. You are in love with Hibari Kyoya, and whenever you see him, it activates your Pinzu Time Bomb. He, however, is not even aware of your existence.
Box Weapon and Cambio Forma: None."
Finally, she turned to Tsuna, who sweat-dropped.
"Sawada Tsunayoshi
Attribute: Sky
Weapon: X-gloves
Childhood: A failure in life known as No-good Tsuna for most of your life. You made very few friends until your mother hired a home tutor who turned out to be the sun arcobaleno Reborn, the strongest of the arcobaleno. After Reborn came, several strangers started collecting around you, as well as some of your classmates, including Yamamoto Takeshi. You developed friendships with several people and began to realize that the mafia business was serious. You had your first taste of it during the Ring Battles, but when you fought the Millefiore, you truly realized just how important it was for you to protect your family with everything you had. You have mastered the Zero Point Breakthrough First Edition and developed the Zero Point Breakthrough Custom, as well as the X-burner.
Box Weapon and Cambio Forma: Natsu, Primo's Mantel, and the Burning Axle."
"Then…" Tsuna said, "Then who are you?"
She gave a small smile and said,
"Sawada Shiyona
Attribute: Sky
Weapon: Classified
Childhood: Was kidnapped by another mafia family very soon after I was born and was raised by a nice family of an ex-mafioso. However, when I was seven, my surrogate parents were assassinated and I was sent to the streets. I learned to live on my own at an early age, similarly to Gokudera, and was taken in by another mafia family age eight, similar to Mukuro Rokudo. They honed my skills and gave me my special weapon, but they were cruel, and I was soon forced to escape from their so-called family. I was taken in by another mafia family when I was nine and was allowed to look through the wreckage of my first home. It was then that I discovered who I was and what I was capable of. However, I liked my family and did not wish to leave. When someone in my family committed suicide, I was blamed and forced to leave at the same age, though they did not press charges. So I extensively researched my true family, even going to the future to see how they fought. Finally, I made my appearance to my family today.
Box Weapon and Cambio Forma: Classified."
Tsuna blinked and everyone froze as they processed the only piece of information that seemed to be important at all. Her name was ... Sawada Shiyona. SAWADA?
As if she could read their minds, Shiyona smirked and said, "I'm Tsuna's twin sister."
And you could hear Tsuna's ensuing cry of "EH!" throughout all of Namimori.