Thirteen is too young to gain eight years of memories that might come to pass--especially when you don't even know what to do with yourself in the present. But when the future is that bloody and dark, do you have any choice but to try to change it? He remembers the absolute agony of the doctors trying to save him, which finally sent him into blissful unconsciousness— —except he doesn’t remember any of that. Tsuna’s last memory is of putting his head down on his desk and falling asleep to the sound of the teacher’s droning, thirteen years old and tired of not understanding a word, not of being twenty-two and beloved and dying.

Tsuna is not quite human, neither are his guardians. Magic and flames can have some odd interactions.

Xanxus is eight years old and desperate to find something more than a future in the slums. When he comes across a man with broken eyes and a mastery of orange flames, he thinks he’s found it.

The men in Nana's family carry a very strange curse. They swap bodies with anyone they kiss. Tsuna really wishes he'd known that before he fell onto the pretty girl with the very loud brother...

Tsuna doesn't know how he dies for good, only that he still has regrets when he does. When he wakes up, he's in the body of Sawada Nana, mother of a 2 year old Tsuna, and those regrets become tenfold. He's drowning in the implications, when an Arcobaleno appears on his doorstep, and the future becomes infinite possibility.

Tsuna and his guardians died in a blaze of glory. Then they woke up, slowly, one at a time, in a different world that was the same in all the ways that really mattered. Or the one where Tsuna and his guardians are reincarnated into the class below the Konoha rookie nine.

Present Mic first spots the restaurant when it’s his turn to patrol the local neighbourhood around UA.

"Reborn!" "You weren't taking your training seriously, and I decided to take a leaf out of your current favourite manga, Dame-Tsuna. You should recognise the game." "You didn't." He'd been reading Sword Art Online, and of course Reborn would think that full immersion into a video game was a fantastic idea.

Tsuna’s first thought when he woke up to a white hospital room and the beeping of machines was “at least I’m not in a coffin this time.” “… What?” Oh. He’d said that out loud. Reborn would’ve shot him if he’d been there.

The thing about Tsuna’s life was that it could never just be normal.

Tsuna is dead. Hayato decides that is Not Acceptable. And proceeds to break space time to fix it. He regrets nothing. Except for the fact that he arrives back in Italy, half a world away from his Sky. He then embarks on the epic mafia road trip from hell to find his Sky, along with three escaped lab experiments, one kidnapped mafia heir, one runaway schoolkid on a field trip to Paris, and a dog called Spot. Or the one where Hayato is incredibly Extra about everything, and no-one but Dino notices.

In which Tsuna has some fairly inconvenient opinions, Iemitsu has been happily living in denial for years, and Reborn now somehow has to sell organised crime to a bunch of student hippie activists. He is not amused.

Tsuna isn't a hardcore gamer, and neither is Yamamoto. But Sword Art Online is the world's first VRMMORPG; who wouldn't be excited for the official launch? ... Before the 'death game' part of it was introduced, of course. (And the chaos doesn't stop there.)

In one world, the Tenth Generation escape to a world of heroes. In this reality, they flee to a world of Pokemon.

Through no fault of his own, Xanxus finds himself in another world, trapped in the body of the No. 2 Hero. At least he has some entertainment, in the form of an angry, scarred, broken son...