He had died- honorably, he'd like to think, despite living as a villain and an assassin for over half a century- and that, as far as Xanxus had ever figured, would be the end of that. No heaven. No hell. Just life when you were breathing and nothingness when you stopped. Except that it didn't, quite, turn out that way. Except he came back as the son of the kindest, sometimes saddest father in the world. In both worlds. A father that he knew, without a doubt, to be his flesh and blood. All at once, Xanxus had everything he'd wanted as a child. A home. A family. Stability. And he was going to fight like hell and beat down anyone who tried to take it from him, no matter what his age. (In which Sakumo raises a son who speaks multiple languages from birth, all of them gibberish to the poor single father jounin, spits vulgarity with the same ease as he does his praise and burns with an unshakable determination to build himself a family that will not fall, no matter who or what is thrown against it.)

Their first time is messy and awkward, fumbling attempts in the dark with laughter pressed against heated skin. Tsuna doesn’t know what to do with his hands, is so nervous he can’t seem to get hard at all, and Kyoko keeps giggling so hard she accidentally kicks him in the face. They don’t fare much better the second time, or the third. They always seem a step out of beat, never quite lining up, always missing each other. Tsuna always feels like he’s going to vibrate out of his skin, like there’s something in his gut that’s trying to claw out. He keeps expecting his flames to burst out at any second. After a while he realises he’s so used to fighting his body is wired to it as soon as the adrenaline rush hits. And Kyoko is an adrenaline rush.

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.

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.

In a world where Fugaku has three sons, he wishes he'd stopped at the one. There's nothing wrong with the youngest, it's just... The middle child.

“Reborn!” He squeaks, voice caught somewhere in his throat as panic starts to set in. Coming to the swift and horrible conclusion of what his sadist tutor is going to make him do. His thoughts are proven right as Reborn begins to explain. “When searching, people tend to overlook the opposite sex. No one thinks a mafia boss will be willing to put on a dress just to escape from capture. They assume it is against their masculine pride or some such nonsense.” Reborn’s grin is practically predatory, obviously enjoying Tsuna’s discomfort. “That is why it always works if you know how to blend in correctly.” ----- aka; the fic where Tsuna goes undercover as a girl to a local festival to learn how to avoid being captured by enemies, but ends up sexually frustrating Yamamoto Takeshi who wasn't aware he had a very specific fetish.

Reborn is a ashamed to say he won’t notice a lot of the weirdness about to happen before he is almost powerless to stop it.

A what if, of a what if... What if the Vongola Tenth Generation were to be raised by Uchiha Madara and Senju Tobirama? Well, for one thing they don't even bother with pretending to be nice people. For another, Madara is born into the Hibari family. Yes. Madara. Also yes. Those Hibari.

He fires a Dying Will Shot at the child he's been sent here to tutor by the Vongola Ninth. What he expects is for Tsunayoshi Sawada to burst into Sky Flames; he’s from Primo’s Line, after all, for all that he’s timid and Sealed. And he does, but rather than the brilliant orange ethereal Flames he was expecting they're darker and denser.

Sawada Tsunayoshi is born an Omega in a world that expects nothing from his dynamic except submission. Tsuna is many things – hopeless klutz, booksmart-deficient, heir to a bloodline some people would like to keep secret – but, as it turns out, ‘submissive’ is not one of them.

Written for the prompt "Eldritch Abominations" "Kakashi doesn’t let his Light loose often, so to shed his skin twice in a day-- even if only a little bit-- gives him a high like no other. He lets a faint image of his wings burn into this reality and a million galaxies are reflected in his eyes. “Naruto is an Uzumaki through and through. There are certain differences you’ll just have to let me account for.” He creeps closer to the elders, speaking with more mouths with every word. “My mother once told me that when I was a baby I had a habit of forgetting I was supposed to be baby-shaped. My father was hardly allowed to look at me for fear of me blinding him by accident. I would hate to make the orphanage directors blind. And I would hate for you four to be responsible for it.” He returns to his form-- the silver hair that catches light a bit too well, the grey eye that sometimes doesn’t look grey, the pale skin that’s a bit too pale for anyone’s comfort. “I trust you to make the right decision.” The four elders consider for a moment. “Perhaps we can reach a compromise.”"

It was only supposed to be a game. A fun way to pass the time. Maybe even make friends. How was Tsuna supposed to know Jumanji had a mind of its own, or that 'survival game' was very literal?

Sawada Tsunayoshi is born an Omega in a world that expects nothing from his dynamic except submission. Tsuna is many things – hopeless klutz, booksmart-deficient, heir to a bloodline some people would like to keep secret – but, as it turns out, ‘submissive’ is not one of them.