Disclaimer: I do not own or make any money off KHR, sadly.

Tsuna, a boy of average height with an explosion of messy brown hair, was currently dangling from the school roof. At the other end of the thin fishing wire tied around his ankle a small suited baby was holding onto a fishing rod, and his life.

"Question nine," announced the baby ominously in his high voice. "Who was the first reigning emperor in the Kajō era? Horikawa-tennō or Toba-tennō?"

Tsuna stared blankly on hearing this, sweat running off his head like a summer storm.

"You're going ahead of our history class now! How is this supposed to help me?" he shrieked, wondering about his infant tutor's sanity. Up above him, the easy-going Yamamoto chuckled casually.

"He's pretty creative with these games, isn't he?"

"You can do it Tenth! This one's easy for someone like you!" encouraged Gokudera, his self-appointed 'right-hand man'. Tsuna felt like slamming his head into a desk, if he lived long enough to go on the ground and see one again.

"Um... T-T-Toba-tennō?" he shut his eyes in preparation.

"Wrong again, no-good-Tsuna." He felt his stomach lurch as Reborn unravelled the line even more, Tsuna subsequently plummeting several feet.

"Wow, I'm running out of line. When that happens, you might fall," warned Reborn innocently. "And you'll still be three stories above ground level, too..."

"Hiii!" Tsuna's not-unfeminine cry echoed across the track field below. Naturally, Gokudera and Yamamoto didn't attempt to stop this- either believing Tsuna was smart enough to win, or not seriously believing he was in any danger.

Today's history lesson came to an abrupt end however, when the door to the rooftops slammed open. Stepping out with calm deliberate movements was the head of the school's Disciplinary Committee, Hibari Kyouya.

"Classes have ended," the raven-haired teen said, a dangerous glint in his eye. "Your noises shouldn't be crowding the school at this hour." Gokudera and Yamamoto paused for a moment, nervous and unsure how to address the guy as always.

"They're with me," Reborn piqued up, even as he spooled Tsuna back up on his line. "As his tutor, using Nanimori school facilities should be fine for supplementary lessons."

How is the edge of the roof a facility? Tsuna wanted to yell out, as he climbed back onto a solid surface for the first time in an hour. He settled for kissing the concrete instead, as he tried to make his legs move without shaking.

Hibari merely glared on seeing the baby, and made to leave the rooftop without a word.

"Wait," Reborn held him back, alarming the others. "I was just going to use Gokudera, but you're perfect for what I had in mind."

"Hiiii!" Tsuna clutched his head. "Why would anyone talk to Hibari-san any longer then they have to?"

"... What is it?" Hibari stood at the doorway, head turned back towards the group.

"Stand still," Reborn instructed, pulling out a large green revolver out of seemingly nowhere. Hibari's face betrayed no flicker of surprise or alarm, stoic as always, as Reborn aimed at him.

"R-Reborn! What are you doing?"

"Haha, target practice?"

"Don't shoot him!" The trio reacted too late, just a split second before Reborn shot their Cloud Guardian. Unable to stop the bullet, Tsuna watched in horror as Hibari stared down the zooming lead, almost as if he was daring it to strike his pale skin.

Was it a dying will bullet? Did he use a real gun, to test Hibari-san? Tsuna's mind raced with questions, as an explosion of smoke billowed out across the rooftop. Arm up against the smoke the Vongola Decimo stepped forward nervously, wondering what had happened.

At first glance, Hibari was nowhere to be seen. Tsuna blinked confusedly.

"What, is that an Arcobaleno thing?" Gokudera asked, rubbing his eyes in shock.

"Man, we sure do see a lot of children around here, huh? Another friend of yours, kid?" Yamamoto asked casually. Only then did Tsuna look down, to see an infant with silky dark hair and narrow eyes glaring towards him, in the exact spot Hibari had been standing in.

"Hm. Seems I was a little off," Reborn muttered, looking impassively towards his gun.

"Di-di-did you just turn Hi-Hi-Hibari-san into a baby?" Tsuna jumped backwards, arms flailing.

"Hahahaha!" Gokudera picked up the infant Hibari, who was currently wearing his dark jacket over his entire body. Laughing, Gokudera teased the baby, sticking his tongue out.

"Not so big now, are you- ouch!" He dropped the baby immediately, as Hibari bit him on the finger. "What the hell!" he thundered, glaring.

"I onwee let herbiwores pick me up," the baby spoke coldly, turning towards Tsuna with his arms raised.

Tsuna nervously fumbled the baby, lifting him warily. Hibari turned into him, pressing his head against Tsuna's chest. Does Hiabri... like me?

"Herbiwores are safe..." he muttered sleepily, as a smile bloomed across Tsuna's face. "No chance they could hurt me, won' dare twy anything..." How rude!

"So, Reborn-san... Did you mean to turn Hibari into a baby?" Tsuna asked, confused.

"Nope," the infant replied, putting away his gun.

"But- how do we fix it?"

"I don't know," Reborn replied, kicking him in the shin viciously. "Let's head back to mama now." Hopping as he struggled not to upset the surprisingly heavy infant curled in his arms, Tsuna followed Reborn off the roof.

"But wait! Reborn! What are we gonna do with a baby Hibari?"

"I don't know, it might be good to just leave him like that," Gokudera spoke up, a grin on his face.

"I never knew that guy had a little brother..." Yamamoto mused. Tsuna wondered what he was going to do with the two of them, as they left the school. What had Reborn been trying to do? How where they going to fix it, or explain the baby he was now carrying?

Chapter written while wearing: the Sky Ring.

A/N: Here is my first attempt at a fluff story, thankyou everyone who read this far! ^.^ I promise to shoot other characters and focus on them more as I go. Feel free to ask me anything about this fic, and be as blunt/honest as you like in your criticisms, I need it. Bye for now~