"...Omnivore...is that...?"

Tsuna sighed exasperatedly before nodding his head, giving a hidden message through his sunset-orange eyes to silver-blue ones.

*Just act like you usually would.  And don't show any signs of recognition to Reborn.*

Kyoya merely blinked his eyes to show that he understood.

"Omnivore...I'll make an exception for today.  Make sure the baby doesn't cause any...disturbances."

With that, Kyoya closed his eyes and leaned against the wall by the school entrance, ending the conversation there.

Tsuna gave a nervous smile to the elder teen before walking away from the other.

~~

It was now lunch time, and Tsuna had to ignore all of the stares he was given.

After walking down the hallways for a few minutes, he met his happy-go-lucky Rain.

"Hey, Tsuna--wait a second...."

Takeshi gazed at Reborn with surprise; the infant was currently strapped to Tsuna's back.

The raven smiled amusedly before deciding to say something to tease the brunet.

"Did you become a mommy, Tsuna~?"

A full-blown blush spread across Tsuna's face as he spluttered incoherent words.

The Decimo whacked his Rain on the shoulder before pouting; Takeshi raised his hands up in surrender.

"Maa, gomen, Tsuna!  I just felt the urge to tease you!"

And then a childish voice spoke up.

"Mama."

The two teen blinked their eyes with shock; there gazes landed on Reborn, who was smiling *cough*evilly*cough* at Tsuna.

"Mama~!"

Tsuna paled and sweatdropped, glancing at Takeshi who...

"BWAHAHAHAHAHA!"

...promptly lost it.

Takeshi had tears rolling down his cheeks as he clutched his stomach; his laughter hadn't ceased yet.

Tsuna felt a vein pulse at his forehead as he narrowed his eyes at Takeshi.

Sensing the other's growing displeasure, Takeshi's laughs died down to choked chuckles.

"Pfft--Le-Let's head to the r-rooftop, neh?  Pfft!"

Tsuna scowled at the other before huffing, crossing his arms as he refused to look at the raven as they made their way to the rooftop.

Takeshi was stifling his laughter the entire way, completely unoffended by the brunet's behavior.

~~

"DAHAHAHAHAHAHA!"

*ONII-SAN!  IT'S NOT FUNNY!  TAKESHI, SHUT UP ALREADY!*

Tsuna puffed out his cheeks as he swatted a certain silveret and raven with his notebook.

Kyoya was smirking on the side, not bothering to hide his amusement.

The brunet groaned and buried his face into his hands as Takeshi--still chuckling--gave a comforting pat on the shorter teen's shoulder.

"Maa, it's not that bad!"

*He called me something of the opposite gender!  How can that be 'not that bad'!?  Calling me 'Papa' would've been just fine!*

Everyone shared a knowing look when they made sure that Reborn's face was looking the other way.

*Oh, Tsuna/Sawada/Omnivore, this is Reborn we're talking about...*

Tsuna sighed and buried his face into his hands once more, sulking as Takeshi tried to playfully feed the other his bento.

~~

"Ja, mata ne, Tsuna!"

"See you EXTREMELY later, Sawada!"

Tsuna smiled and waved in return as he parted ways with his friends.

The Decimo stuffed his hands into his pockets as he walked towards the Sawada Household, humming the lullaby only familiar to those of the Tri-Ni-Sette.

Tsuna felt Reborn tense slightly against his back, causing the brunet to idly wonder if shouldn't have done that to avoid suspicious looks from the spartan infant.

The Decimo gave a mental shrug and continued to hum, gazing at the orange sky with a sense of fondness.

~~

"Okaerinasai, Tsu-kun--ah!  Tsu-kun...is that a baby on your back?"

The brunet gave a nod and an exasperated look to her.

*Help me, Kaa-san!*

Nana blinked in surprise before giggling, waving her spatula in the air as she walked into the kitchen.

"Don't worry, Tsu-kun~!  I'm sure you're doing fine~!"

The elder brunette disappeared.

Tsuna paled and he could feel Reborn smirking.

'IT'S NOT 'FINE'!  THIS LITTLE SPARTAN'S SUPPOSED TO BE TOR--TUTORING HIRO-KUN!'

The brunet quickly mused up his hair before sighing heavily.

He spoke softly--apparently, whispering wouldn't cause his voice to crack and break.

"Looks like it's just you and me...Chibi-chan~!"

Tsuna could feel the spartan freeze up.

The Decimo didn't really care if he got punished in the future--he was laughing his butt off in getting back at the spartan for calling him 'Mama'.

The brunet covered his mouth to help stifle his silent laughter, which soon died down to coughs--courtesy of his strained throat.

Tsuna then felt the evil intent, tinged with a bit of...amusement?

Well, the spartan was more pissed with Tsuna, so the brunet was going to die anyways.

~~

Dinner was...eventful.

The brunet took his supper to his room to avoid meeting Hiro at the dining table, causing Reborn to narrow his eyes briefly in suspicion.

Anyways...Tsuna had to spoon-feed the baby hitman, much to his embarrassment and the other's amusement.

The Decimo sighed in relief when Reborn was finished with eating, setting the empty plate on the side before wiping the other's face of any crumbs.

Tsuna sweatdropped mentally when he felt the amusement coming from Reborn as he did this.

'Gah!  Reborn will always be demonic and spartan in any world!'

~~

In the bathroom, Tsuna brushed the infant's teeth without any resistance.

The brunet allowed Reborn the spit into the sink and rinse his mouth out with water.

The Decimo did the same with the hitman eyeing his every movement.

~~

Now, the brunet glanced around his room, which he had clean a few days before when he found it as messy as a war zone.

Now, the room was neat and tidy--a complete opposite of what it was before.

Tsuna headed over to his closet and pulled out a small cardboard box, where he stored his baby clothes--even he was confused on how he found his baby clothes scattered around his room before.

Rummaging through, he pulled out a mini, black t-shirt, boxers, and jersey shorts.

He returned to Reborn with the bundle of clothes, giving a small smile to the 'younger'.

"Alrighty...we'll be taking a bath now."

~~

Tsuna gently scrubbed Reborn's raven locks as bubbles slowly started to form.

Steam filled the bathroom, fogging up the mirror as the two splashed around in the tub.

The Decimo could feel the hitman's critical eyes zoning in on his healing bruises, but he feigned ignorance as he continued to wash the infant.

After a good scrub down, Tsuna rinsed away the suds.

~~

Changing Reborn into the hand-picked clothes, Tsuna smiled softly, thoughts drifting back to Lambo, Fuuta, and I-pin.

'Hm...I miss those three...'

Tsuna's eyes grew distant briefly before he mentally shook his head, bringing his thoughts to the present as he picked Reborn up and wrapped him into his arms, walking over to the bed.

He settled down with the hitman in his arms, pulling the covers up before turning his desk lamp off.

When it felt like Reborn wouldn't go to sleep anytime soon, Tsuna produced a small flicker of Rain flames to calm the spartan down.

It worked, and the infant was slowly lulled to sleep as Tsuna hummed that familiar tune again.

When he was sure that the infant was asleep, Tsuna murmured two last words to the spartan.

"Buonanotte, bambino." (Goodnight, child.)

~~

Onyx eyes snapped open with surprise, immediately flickering over to the digital clock in the room--it was currently the middle of the night.

Carefully, Reborn slipped out of Tsuna's hold and hopped down to the ground below.

In a flash, the baby hitman was in his usual suit and tie--and of course his signature fedora.

A green lizard crawled out from the orange undershirt, flicking his tongue out to Reborn's cheek.

Reborn gave a small smirk to his partner, Leon, before turning his onyx eyes back to Tsuna's sleeping figure.

The hitman stared for a few seconds of silence before smirking, tugging his fedora downwards.

"Sawada Tsunayoshi, eh? I would've enjoyed having you as my student than Baka-Hiro."

Reborn gave one last glance to Tsuna before jumping out of the window.

Once the hitman left, sunset-orange eyes cracked open and a small smile made its way to a certain brunet's lips.

"Vorrei troppo, Reborn--anche se sei un sadico spartan." (I would too, Reborn--even though you're a sadistic spartan.)