Wasn't expecting to start a new story, but here it is. Looks like I'm back in the KHR fandom for the first time in a while!

Pairing: G27 ( Giotto x Tsuna )

Warnings: Incest

Summary: "Why don't you ask Giotto-san about this?" One simple sentence sends Tsuna spiralling into a world previously unknown to him... one that Giotto is desperately trying to prevent him from coming in contact with. G27

Teach Me

"Hey Tsuna, have you ever heard of kissing?"

Ten year old Tsuna, who was almost dozing off in the middle of class, was roused out of his sleep-induced daze as he looked around at his seat partner, Yamamoto, while rubbing his eyes cutely. "Nnn… What did you say, Yamamoto?"

Yamamoto gave a long-suffering sigh, poking Tsuna's nose. "Kissing! You know! K-I-S-S-I-N-G!"

Tsuna swatted Yamamoto's hand away before scratching his head thoughtfully, trying to remember if he knew the word or not. "I've heard of it…" He said slowly, before pulling a face. "But I don't really know how it works."

Tsuna's cheeks lit up as Yamamoto laughed at him loudly, not even bothering to hide his mirth. He shot Yamamoto a deadly glare, which the latter dismissed immediately, responding with a big grin.

That is, until he noticed the teacher glaring at him from the front of the class. Yamamoto pressed his hands together in an apology, smiling sheepishly. When the teacher looked away, shaking her head in exasperation, Yamamoto started scribbling something in his notebook frantically. Tsuna raised an eyebrow. Was the hyperactive boy finally going to pay attention in class properly?

A paper crept onto his desk stealthily, and he looked around to see clearly-unrepentant Yamamoto giving him a grin and a thumb up.

Amusement flickered across his face, and he turned back, looking down to read the note.

How can you not know how a kiss is like? You're missing out!

Tsuna felt his eyebrow twitch in annoyance, and he grabbed a pencil, bending over the note to write his reply. Yamamoto watched him in anticipation.

W-Well, I do know that people do it to people that they like…! If I remember correctly, it was something gross like… eating each other…

He passed the note back to Yamamoto when the teacher wasn't looking. The table beside him suddenly started to shake vigorously- Yamamoto was leaning on his table, clutching the note, tears of mirth in his eyes as he tried to stifle his laughter.

At times like these, Tsuna wondered why Yamamoto was his best friend.

"T-Tsuna…" Yamamoto leaned in close, whispering in his ear in a shaky voice as his laughter threatened to overwhelm him again. "Why don't you ask Giotto-san about this?"

"I'm home…" The house was empty- or so it seemed. Tsuna searched the kitchen, and upon seeing that it was empty, walked up the stairs, his socks padding quietly on the carpet.

He walked down the hallway and stood outside the door- the first one on his right- and turned the knob, opening the door by just a crack to see what was inside. This was Giotto-nii's work room, and he had never had the nerve to venture into it without a valid reason.

He gazed through the crack, his little hands gripping the edge of the door to balance himself.

There, his light blonde hair illuminated by a ray of light that filtered through the drawn curtains in the room, sat Sawada Giotto. His brows were furrowed and eyes, narrowed in utmost concentration. In his left hand, a myriad of colours swam in his palette, and his brush made the occasional ever-so-gentle dips into the palette, before returning to the canvas. Giotto's nimble fingers made quick work of the canvas, and with each flourish and stroke of the brush, the canvas transformed into a spectrum of colours.

Tsuna was enchanted. He loved these moments, where the room was absolutely silent, and the only thing he could hear was his pounding heart and the sound of the ripples of the water Giotto's paintbrush whenever it touched the water surface. He loved the serious look on Giotto's handsome features whenever he was absorbed into his work. Every time Giotto picked up his paint brush, he felt like he could watch him paint all day—and he would, if he didn't have school to attend, and homework to do.

Tsuna stood there for the longest time, drinking in the entrancing sight. His eyes were wide in admiration, and as he breathlessly watched Giotto put the final touches on his painting, his stomach suddenly growled loudly.

Tsuna winced, and Giotto turned around in surprise. His eyes lit up in delight when he found Tsuna looking at him adorably, his cheeks flushed at being found out in such an embarrassing manner.

"Tsuna! Welcome back!" A gentle smile graced Giotto's face. He set down his paintbrush onto the nearby table, wiped his hands dry with a cloth, and walked towards Tsuna, his bare feet padding across the polished wood tiles.

"Giotto-nii…" Tsuna stuttered, blushing furiously, his little hands fidgeting behind his back. He didn't want to seem as if he was spying on Giotto…! He just hadn't wanted to interrupt his brother's painting, and he wanted to prolong that magical moment.

Giotto ruffled his hair, his deep-blue eyes shining with a soft, calming glow. "Why didn't you tell me you were home? I could've cooked something up for you to eat right away."

Tsuna gave a tiny smile, as his heart skipped a beat in happiness. This was his older brother—the sometimes overprotective, but always kind and reliable brother who knew what to do in every situation, and doted on him immeasurably. He couldn't have asked for a better brother.

"I wanted to watch Giotto-nii paint," Tsuna confessed, his cheeks still a little pink. "My stomach can wait!" He looked up at his older brother hopefully, pleading with his wide caramel-hued eyes for Giotto to continue painting. The painting was nearly finished- it was such a waste to just let it dry before completing it!

Giotto smiled at Tsuna's cute antics, and stroked his cheek endearingly. "Sorry Tsuna, but your wellbeing is my priority. He chuckled as Tsuna whined in disappointment. "Don't worry, you can always watch me paint later. I'll let you watch after you finish your homework, okay?"

Tsuna brightened considerably. "Okay!" He beamed, the waves of happiness radiating off him contagiously—Giotto could feel a smile tugging at the corner of his lips once again. He took Tsuna's hand in his own, and walked to the kitchen. Tsuna followed closely behind, feeling entirely safe as he walked down the stairs towards the kitchen. The stairs were scary and tall, but when he was with Giotto-nii, he never tripped.

He smiled softly and tightened his grip on Giotto's hand.

Honestly, I don't really know what to think of this. I'm sure you're wondering what on earth the summary has to do with the story so far. Well... It'll be apparent soon enough. :D

Don't forget to review! :)

Thanks for reading!