Disclaimer: KHR belongs to Akira Amano

A bit of an explanation about this fic:

The Tenth generation group from TYL have so much hinted backstory and I want to write about it. It started out as just planning out the Future Arc timeline and it turned into a fanfiction plan where did it all go wrong… In other words this is basically the Tsuna and friends that grew up to make the Future arc happen. A whole fic detailing every year of that. It'll be forever until I get there but yeah

Note that this follows Manga canon, and I'm gonna stick as close to canon as I can, but there's still a lot of blank space when it comes to the TYL gang, so there's also going to be a buncha headcanons and subplots around. Some things might get changed, but I will stick to canon as close as i can.

Hope I can go through with all ten years.

Chapter 00: The Afternath

''One day, they will come to regret it. They'll wish they died in this battle.''

-A week after the Ring battles-

Things have settled down for had been wishing for some well deserved peace and quiet, after that chaotic, nerve-wracking, life-or-death battle for the Vongola rings. But chaos is, Tsuna muses gloomily, a constant in his life.

He had just said his goodbyes to Lanchia and Basil, and Lambo's already kicking up a fuss with Reborn. It's late evening, the sun rays cast over the streets in hard orange tones and long shadows, and Tsuna just wants to head home for dinner.

''Stupid bad Reborn!'' Lambo wails, face red from bruises and tears, pointing the bazooka at himself. ''Droopy eyebrows!''

Reborn snapped.

''The 10-year bazooka- wait a minute, Lambo!''

Reborn picked up a piece off the road in his hand, and with perfect aim, slammed the rock right into Lambo's poor, splotchy, tear stained face, with enough force to knock him clean off his feet.

''Go visit the stars.''

''Guwahh!''

Merciless as always...wait a minute. The bazooka shell- Its flying towards us!

''Re-Reborn!''

''Hmm,'' Reborn took a leisurely moment to contemplate the trajectory of the impending rocket. ''Go take a trip to the future, Tsuna.'' He said, and kicked Tsuna towards the whistling, smoking shell.

''Eh? Wait wAIT –'' poof!

For a moment, all Tsuna could see is a bright, shining pink, even with his eyes shut tight - his gut was doing cartwheels from feeling so weightless, dropping through the Earth then rising through his lungs, then a strong pull from his back then he was flying- screaming...

Tsuna felt his body hit ground, then it all goes dark. Green. The smell of soil hits him first, then grass, along with some rustling and a distant flapping of wings and chirps of birds. He stayed still for a while, blinking. Was he really here? In the world 10 years later?

He really should stop hugging the floor. Tsuna huffed, pushing his palms on the grassy dirt, stood up, then brushed the dirt off.

A shroud of trees surrounded him, a short distance away, as he was standing in a small clearing. There were enough trees around to cover anything in the horizon, so Tsuna wasn't sure where he really was, besides a forest.

What was his future self doing here? Tsuna hoped with a stab of panic that they were both still in Japan.

The sky above is tinted a washed-out, comforting pale orange, and Tsuna could see a deep turquoise edge approaching from near the east. It's quiet. It's peaceful. He's stranded alone in the middle of the forest 10 years in the future on a land that may or may not be Italy for five minutes.

Tsuna spots two pale-brown outdoor folding chairs a few steps away from him, accompanying a small, round table. He might as well wait out the five minutes here instead of getting hopelessly lost in the forest, 10 years in the future, all by himself. What if he gets eaten by some future-y beast or something?

Warily, Tsuna took a seat, the chair creaking softly. Putting both his hands on the table, Tsuna glanced back at the forest trees.

He listens to the wind and the rustling of the leaves. There were sounds of rushing water… is there a river somewhere north? The forest was otherwise silent, and Tsuna can't hear any more birds, or wildlife, even though its dusk. The bang of time travel might have scared them off.

Tsuna lets out a long breath. It really was peaceful here, and it's been a long time since he felt peace like this, with no one around. Even though it's a little creepy being in a forest.

He's so, so glad the ring battles were really truly over and no one died.

With nothing else to do, Tsuna pulled out the Vongola ring he hung on a cold, metal chain around his neck, and traced his thumb over the engravings. Reborn had forced him to keep it with him, or to at least wear it with a chain. Tsuna has never really took the time to look at it, and honestly, it is quite beautiful. It felt heavy, the metal radiating a soft, strange warmth, the engravings masterfully intricate, and the dome in the middle glows on its own, blue, dim and eerie.

It hardly showed its blood-filled history, how clean and shiny the ridges were.

Thinking back, the past week was all kinds of horrible. The battle had drained him of his everything and all he had left was a deep, aching, soreness from his core, stinging burns, sensitive bruises and various cuts. And the homework! How was there so much? A week of absence absolutely do not warrant three mountain piles of homework, Tsuna could easily bet that Reborn sneaked in more, that jerk.

At least there wouldn't be more training until, well, who knows. But there's no more daily mountain dying-will training for now! Yes!

The teacher's at school didn't question his absence or his injuries, (they seemed disappointed he was even back, actually), the other students still think he was just truanting, though some did show... questionable concern. It was harder explaining the absences of Yamamoto and Ryohei, since those two virtually never got sick, but most took their word for it. ''There's a first time for everything, right?''

They were both quite possessive over the rings (they did risk their lives over it), and insisted on wearing it on their persons. Though they can't wear it on their finger because of Sports. Strangely, no one had questioned all their matching rings.

Tsuna wondered if they were (hopefully not) still serious about the whole Guardian thing. They're his friends, and Tsuna wants it to stay that way. They shouldn't have to be his guardians. And if they keep carrying those rings, they'll have to fight more, and they're gonna get hurt. Why don't they get it?

Tsuna rested his chin on his right palm.

Dino...Dino returned to Italy yesterday. He had stayed for Reborn and Tsuna's brief belated birthday parties, and Tsuna had asked Dino, who was trying to get chocolate icing off his jacket, how long Reborn had been teaching him. Tsuna had taken a while to stop gaping when Dino answered in hushed whispers and constant looks over his shoulder.

"5-5 years?" Tsuna choked on his ice tea. "But he's only 2!''

''...I don't know if he's okay with me saying this to you now. Thing is, its weird, but he doesn't grow. He hasn't told me anything about why he's... like that. You'll have to let him tell you on his own, Tsuna.''

Tsuna had then asked Reborn about it, timidly, somewhat hoping Reborn didn't hear; because Dino made it seemed like it was a taboo topic to bring up, the way he was whispering. But after a long, tense silence, he hears Reborn answer him with a nodding head and snot bubbles.

This guy- !

What Tsuna couldn't get out of his head that night though, was what Dino told him before he went back to Italy.

''He's a ruthless, demonic, spartan home tutor, but... appreciate him while he's still with you, Tsuna.''

The thought of Reborn no longer being in his life should have brought him tears of joy, but instead it terrified him. It bit at him to the point of keeping him up for hours, staring at his bedroom ceiling, thinking.

Had he really come to depend on Reborn so much?

Tsuna traces the lines and grooves of the pale brown table with his eyes, and rests his chin on his other hand.

These 5 minutes is getting long. When is it going to- oh.

The return goes by a lot quicker with less interdimensional free falling through time. Tsuna waves the pink smoke away, and gets up from the ground. Reborn is still here, face hidden and adjusting his hat with one hand. His face somewhat even more unreadable than usual. Did he… talk with his future self?

Tsuna gulped. He'd better not be what he's thinking. ''Reborn? Was I...''

"Hmm?" Reborn looked up, his face back to the usual level of unreadable. "Oh, you sure was." He smiled.

No!

"No way! You- You don't mean that." Tsuna laughed, breaking out in a cold sweat. Reborn must have been lying, like he always does. "Nope."

''...Let's go back, no-good-Tsuna.''

''Ow- hey! You didn't have to kick me! Get off of my head!''

''You still have homework, don't you?''

''N-no... Alright okay, I did- stop kicking my head!''

''So get a move on, stupid.''

Tsuna let out a whine but bit back a retort, because his head's not going to get any peace if he does. The walk back home was relatively quiet, and Tsuna watches his shadow drag on in the setting light as he walks, the silhouette of reborn's hat stark and clear on the ground.

And Tsuna's life with his demon home-tutor hitman Reborn continued on.

Notes:

To clear things up jic

-Tsuna here is bazooka'd exactly 10 years later, which means the Future Arc was done and over with, since the Future Arc happened 9 years and 10 months later (canon fact) . so no problem coming back

-The quote up there is from Squalo!

-I'm kind of new to writing so uhm. Please be nice if you review? Any suggestions for the story or for my writing would be much appreciated!

Thanks for reading!