Hello! This is my attempt at a Katekyo Hitman Reborn! story and I hope this goes brilliantly. I would like to thank you, the reader(s), for taking your time to read You Are My Sunshine. I would love it if you'd leave a review, whether it's to just say something positive, just to point out mistakes that my beta or I missed, or just to say you don't like it. I'll do my best to read and respond to any and all reviews; however, if you review as a guest, please leave an alias that I can call you by. After all, it would get confusing after a bit.

Disclaimer: I own nothing except the time I put into writing this story. Katekyo Hitman Reborn! belongs to Amano Akira, the prompt that inspired this belongs to determinedrevolutionary on tumblr, and none of this is based on a real person. If there is any coincidental names, looks, and other details, please understand it was unintentional and otherwise accidental.

Warnings: Violence, Coarse Language, and Mild suggestive themes

Pairings: All27, R27

Beta Reader: HanakoAnimeaddict (Thanks to Abyss, I've been able to write and post You Are My Sunshine so confidently)


Chapter One

I.

"Ie-kun, can you get Tsu-kun up?" Nana smiled at the fluffy raven haired teenager.

Ietsuna grinned at her then dipped his head, "Sure, Mama. Sorry if we get a bit noisy."

He strode up the stairs and down the hall, his eyes glinting impishly. Sometimes, he just loved to wake his adorable baby brother up. Tsuna's expressions were priceless.

"Oi, little brother!" Ietsuna called out from the doorway. When he failed to get a reaction, he strode through the slightly cluttered room and towards the slumbering figure on the bed. He stared down at his brother before nodding to himself.

A moment later, Tsuna was yelping in shock as he hit the floor. The older teen smirked down at him, Tsuna's mattress raised in the air.

"Tsuna, you need to get ready for school," Ietsuna stated cheerfully, "Or do you really want Hibari to bite you to death?"

"Hiiiiee!" shrieked Tsuna. The brunette sprung from the floor and into a flurry of motion around him; sometimes, Ietsuna could be so surprised by how fast his clumsy brother could be.

The second year scrambled out of his room and down the hallway, stumbling on the stairs. It would have led to a painful, almost comedic, fall if it weren't for Ietsuna snatching Tsuna's collar and counterbalancing him.

"You should be more careful, little brother. A Boss isn't clumsy."

"Ie-nii, I'm not a boss!" Tsuna huffed when Ietsuna released him, a slight pout on his face.

"Hurry up, Tsuna if you want to have breakfast." The elder Sawada ignored his brother and headed down before him. "I think Mama wants to talk with you."

II.

"A home tutor, Mama?!" cried Tsuna, his face twisted into a look of horror. Ietsuna was terrifying enough when it came to improving Tsuna's grades!

Memories of having his brother hear a classmate call him 'Dame' Tsuna flashed through his mind. His grades rose from failing to passing with his brother's rigorous tor-tutoring, and everyone learnt that they couldn't insult Tsuna. After all, only Ietsuna could insult his baby brother.

"But Tsu-kun, Papa recommended him!" Nana looked at him pleadingly, "The flyer said he could, 'Raise your child to be the leader of the next generation,' and he'll tutor for twenty-four hours a day, free of charge, if given room and board."

"It sounds like a scam!" Tsuna tried to tell their mother; Ietsuna was snickering into his espresso. This was going to be fun. "Besides, I don't need a tutor! I have Ie-nii!"

"You need the extra help, little, idiotic brother," deadpanned Ietsuna. The brunette shot him a look of betrayal.

"Mou, it doesn't matter! I'm gonna be late!" This was followed by a quick sprint out of the kitchen and a crash as Tsuna tripped over his feet.

III.

The fallen student groaned quietly as he sat back up, rubbing his forehead gently. "Ouch…"

"Ciaossu! I am your new home tutor, Reborn." A dumbfounded Tsuna stared at the well-dressed toddler. Nana and Ietsuna had entered the hall not long after Tsuna's tumble and looked down at the so-called tutor.

Tsuna turned slowly towards his brother and let out a moan of despair, "…Ie-nii, what the hell did you do?"

"As much as I would like to claim I planned this, this is all on your insanity magnet, little brother," snickered the relaxed teen. "And mind your language; a Boss should never curse in front of a lady."

"Sorry, Mama, and I told you I'm not gonna be a boss! I'm completely happy with being an average employee!"

"Shush, little brother," Tsuna made an adorable sound in protest when Ietsuna ruffled his hair. "Big brother knows what he's talking about, so just listen to what I say. Okay?"

The infant hitman watched the scene with veiled curiosity and a silent vow to kick Iemitsu in the face. Watching the brothers a day prior failed to prepare him enough to see a teen with an eerie resemblance to a person he once knew acting so… openly with the fluffy haired brunette.

"Um, why are you here again?" Tsuna eventually asked Reborn.

"I am here to make you into a mafia boss," came in the squeaky voice of the toddler hitman. He watched as his target turned towards the laughing Ietsuna with a decent poker face.

"Ie-nii, you infected me." Tsuna's reply was unexpectedly calm.

"Idiotic little brother, you've always been a trouble magnet. I just help coax it out a bit sometimes… most of the time." But the glinting dark brown eyes glanced down at the hitman tutor as he continued, "Though, we could just blame Stupid-Papa for this one."

IV.

"You shot my little brother." Ietsuna stated calmly as if he hadn't just watched his younger brother burst into flames and run off screaming about Kyoko and the bakery.

"And what will you do about it?" Reborn sat on the wall and looked down at the tall boy. "I have been chosen to train Dame Tsuna to be a Boss; you have no say in what I do."

"Don't call my innocent, adorable little brother 'Dame.'" He smiled at the hitman. "We wouldn't want there to be an accident with an espresso, no?"

The elder Sawada walked past Reborn and in the direction his brother ran off. His little brother was lucky Ietsuna brought him a spare uniform. After all, who knew what kind of accidents his clumsy little sibling could get into?

V.

"KYOKO-CHAN, WOULD YOU PLEASE HANG OUT WITH ME AT THE BAKERY THIS WEEKEND?"

There could have been a better way for Tsuna to ask his crush-yet-friend on a friendly date. He could have at least asked softly, and he could have had his clothes on for one. It also would have been better if he wasn't on fire!

"Tsuna-kun…?" The girl blushed and averted her eyes from his nearly nude self. "I-I need to go-"

Tsuna didn't get a chance to do anything else as Kyoko fled. Mochida, who had been talking at the time, quickly punched him in the face.

"Sawada, you fucking pervert!" Tsuna rubbed his tender cheek as he watched the kendo captain stomp off. He wasn't sure what hurt more, his pride or his face. It was probably his face. Ietsuna made sure that Tsuna's pride was a bit more resilient than his flesh.

"Idiot brother," he heard from behind him, "Did that punch hurt you?"

He turned around and shook his head, partially over the shock of dying when a bullet came out of his nose. Tsuna and Ietsuna stared at the bullet before the younger hung his head and the elder snickered.

"Ie-nii…" Tsuna sighed, "Stop laughing at my misery."

"Misery, huh? I think we need to have another little camping trip, little brother."

"NO! I'm good!" shouted Tsuna in terror. He whimpered when Ietsuna lifted his algebra textbook away from his smarting cranium.

"A Boss never shouts."

"But I don't want to be a boss!"

"Tsuna, I have another uniform for you to wear today," Tsuna's protests were ignored, "so put it on before you get sick or bitten by Hibari for public indecency."

"HIIIIEEEE!"

Tsuna hid behind Ietsuna's larger frame and quickly started to replace his lost uniform. It fit perfectly, as expected of his brother and his preparedness. He slipped out from Ietsuna's shadow, and then he felt his nose start itching. He sneezed, and felt something hard land in his hand.

"Ie-nii…?" came the stunned response. "I was actually shot, wasn't I?"

"Yes." The lisping response came from Reborn. The next part came from the elder Sawada.

"Apparently, that's a Dying Will Bullet," Ietsuna ignored how Reborn was staring at him. "It's supposed to resurrect a person that died with regrets, and remove bodily limits so their Will can be fulfilled."

"And if I had no regrets…?"

"What do you think, Tsuna? A Boss thinks for themselves."

"I'm not going to be a boss," came the absentminded reply before Tsuna frowned. "And I think I would have died."

"Correct, Dame-Tsuna." Reborn seemed unrepentant at the insult as he continued, "It seems like you can think."

"Gah! You know what, Ie-nii, I am going to brush this off and forget this ever happened." Ietsuna smiled and waved Tsuna off.

His grin faded as the younger brother disappeared in a hurry. He let his hand drop and turned towards the hitman-slash-tutor with a blank face.

"I don't care who you think are, Sun Arcobaleno, but just know that I will kill you if you hurt my baby brother. He. Is. Mine."