So, on today's unnoticed author's note, I just found out that the main plot of this story takes three pages. One of each year that Tsuna and Reborn lived together.

I'll stop babbling and I'll let you read the smut. Have fun.

[秋] : Fall.

The young man swallowed and tried to keep his breathing even, he didn't want to arouse the demon and if he were to show how much the man's words had affected him, it would be game over.

"Weren't you the one who cited Freud, saying that an artist needed to be sexually frustrated to produce more art?" the brunet asked with a normal voice even if his heart was madly beating in his chest.

Reborn's nose grazed his cheek before it ended caressing his neck while his burning lips brushed against the writer's moist skin. A deep laugh echoed against the latter's carotid artery and Tsuna almost chocked on his spit when he clearly felt the demon's sharp teeth (beside, he had never understood why a demon eating texts and words had such sharp teeth) ran over his neck.

"You don't need to be distracted by some mediocre girl," Reborn admitted as he slipped his hands under the brunet's shirt. "Mainly when you're already inspired. However..."

The demon's hands slowly went down and ended straying over Tsuna's belt. The latter gulped loudly and closed his eyes, listening to their slightly panting breaths as well as his heartbeat that sometimes seemed to stop when Reborn's lips and hands made another move.

"I don't see why satisfying your sexual drive could be bad," the demon commented as his fingers grazed the young man's growing bulge.

"R-Reborn," the brunet weakly complained with his eyes slightly open looking with annoyance at him.

The latter reluctantly moved his face away from Tsuna's neck and slightly stood back so he could gaze at the young writer who he had pushed against the wall.

"Then again," the demon added calmly while he began to take off the brunet's clothes. "Why would you look for a girl who would end being a bother in the future when you have a demon ready to satisfy any of your desires? And from what I've seen the other times, you've never been disappointed by my skills..."

Tsuna closed his eyes and made a quick prayer when he felt Reborn's skillful hands surround his cock, his underwear having been thrown away during the demon's whispers.

"Are you sure that it's only to satisfy my own desires?" he groaned just before a moan shook his whole frame, thanks to a smug demon's careful attentions.

Reborn's lips widened in an amused smile and he slithered his other hand on the young writer's naked chest, his nails which were slightly longer than those of a normal person, scratching from time to time the boy's sensible flesh.

"Don't forget your place, Tsuna," he whispered in the boy's ear.

Tsuna's eyes narrowed and an orange tinge flashed in them while the writer smoothly moved, sitting up straight and wrapping his legs around the demon's waist, his hands flying to Reborn's hair. The latter held his breath just as the writer's deft fingers, habitually used to write kanji nonstop to feed him, began to massage his scalp, scratching masterfully at the rare spots that made him shudder. A purr came out of the demon's throat and he slightly tilted his head, inviting the brunet to keep his caress going.

"Don't forget yours," Tsuna whispered as he softly pulled at Reborn's sideburns.

He leaned his body over the demons and softly groaned when his cock pressed against Reborn's who wasn't doing better than him. The man hissed as the touch and briefly closed his eyes.

"Never," Reborn growled as he took the brunet's hair to make the boy look at him.

Tsuna met the demon's dark eyes and heard the familiar buzzing of his heartbeat when the man's lips met his.

And like every time whenever Reborn kissed him, the brunet felt an indescribable tingle over his whole body. He tried to focus on something, anything. The feeling of the demon's hair under his fingers, the unexpected softness of his lips, anything that could help him keep him sane.
Because Reborn's kisses had this annoying thing that they always disrupted him so much that Tsuna always ended losing his mind.

And when the raven broke their kiss and moved back, the writer noticed that once again, he had gotten profoundly and entirely enraptured.
At least, it was the only thing that the he could find to explain why he ended biting the demon's shoulder and started laughing when the latter began preparing him.
According to Reborn, it could be because he was sexually frustrated. According to Tsuna, it must be because he had become crazy after those three years talking to someone that most people thought was his imaginary friend.

'But well,' the brunet thought as he felt his lover's warmth surrounding him, 'What is love if it isn't pure madness?'

Anon get their answers:

Great: No, what's this story about? Hibari as Tsuna's frenemy? Come on, Tsuna's way too nice (and scared of Hibari) for that.

I bet that you thought that it would be raunchier, right? Though luck. Also, Tsuna had to write something before this happened. I guess someone won't be too happy to know that...
By the way, we don't talk about the failed attempt at smut. It never happened.

And to end the chapter on a familiar note, a little question: so who's Tsuna's lucky editor?