The story of Alucard and Anderson as they battle through the vampire invasion... Warning: 18 and above only (I will NOT deal with any "damage" caused). More detailed warning at the top of chapter 1.

A renowned expert in Demon Runology, Tsuna has been secluded from the public since he left the field at the young age of 23: to keep his secrets locked away and far from prying eyes. Now with a rampant serial killer severing Summoners' Bonds, the public demands answers that the police doesn't have. Tsuna just hopes he doesn't fall in too deep. Summoning!AU. Arco27.

Where Tsuna is the Sky Arcobaleno, and sky arcobalenos look like teenagers who don't age or die. He is not the Vongola Decimo. The question is, if Tsuna and Reborn were together in the past, why did they decide to part ways after becoming Arcobalenos? R27/slight All27. AU. Follows canon's plot but will skip the parts that are deemed as unnecessary.

Time-Travel. Tsuna is thrown into a time he's unfamiliar with, in a country he can barely speak the language. But it's his choice, so with only determination and his intuition to keep him moving forward, he'll complete his mission while trying to not lose all. Of course, that doesn't mean trouble won't find him; things are never easy when fate loves to screw with one. Arc27

Tsuna inherits a house from his lovable, if slightly estranged grandmother. It's a wonderful place, seaside and greenery. It would be perfect, if not for the weird, crazy and not entirely human neighbours. All27, Arco27 main probably.

The tenth boss for the Vongola Mafia family was chosen, Tsunayoshi Sawada. However very little is known about the boy and Reborn hates going in blind. He decides to scoot out his target only to find a broken child. Reborn sure had his work cut out for him. I do not own Hitman Reborn.

Sawada Tsunayoshi has no idea how he ended up with this many pets but, well, he's not complaining... Okay, maybe he's complaining sometimes. Gen. AU. Cross-posted on Ao3.

Tsuna wasn't sure what would come out of this summoning lesson. He didn't expect having powerful demons scrambling to contract to him, much less having them determined to be more than just contracts. Arcobaleno27

"Don't walk behind me; I may not lead. Don't walk in front of me; I may not follow. Just walk beside me and be my friend." In which Ienari was picked to be Decimo instead of Tsuna, but that's okay because Tsuna was always destined for bigger things than being a mafioso. Twin!Fic. Eventual R27

Wherein Sawada Tsunayoshi is a mythological creature magnet, and it doesn't seem to matter much where those creatures come from. (It starts with the unicorn, and things just get worse from there. The Mafia won't know what hit it.)

Reborn, contracted to tutor the heir of Vongola Famiglia, went to Japan fully confident of his success for his new job. His seemingly easy work of training a civilian and naive sky starts out horribly wrong when he inadvertently revealed about the mafia to a genius high school student who is already a consultant of the police forces. He just doesn't know it yet. Warning inside!

Thirst is a virus. It copies all data available and automatically organises the data into files. Tsuna is a physically weak teenage boy, with a rather scary personality, who also has a sense of humour (sexual innuendos). He also has a very troublesome twin brother. AbusiveTwinForTheWin. Hacker!Tsuna

No one is entirely sure how the person responsible for nearly bringing about the end of the world keeps ending up a parent, and that includes the person himself. Thus, the story of how Chaos once again accidentally made a child, and how he had to figure out how to raise a young newborn god mostly on his own. :: Part 2 of Sevenfold, a KHR God AU

In which Tsuna is an amalgamation of Flame and /flame/ and canon is ditched early on. And the only thing Reborn can do when he gets a letter from Vongola is /laugh/. Dabble Style. R27, and tons of backstory. Not in chronological order.

His son is in danger and there's only one way to make sure he's safe. The child must be sent to the past to the time Tsuna and company were still middle schoolers. So when a five-year-old boy arrives he shocks everyone with his revelations. And the part that he's Sawada Tsunayoshi's son isn't the most shocking of them. Pairing R27 (Adventure, Drama, Romance, Family, Humor etc)

Back when Tsuna was still widely known as 'Dame-Tsuna,' someone told him to be confident and to love and embrace himself relentlessly. Years later, Tsuna still follows that advice wholeheartedly and thanks to it has since escaped his childhood nickname and reputation. However, when someone takes an interest in him, can Tsuna let them love him? And who gave him that advice anyway?

The god of mischief, why would he ever approach a teenage boy from earth? More specifically, why would he approach STILES? what is the trickster up to now? Will Stiles figure it out before it's to late? Or will his life be turned around yet again? And what will happen when the avengers get involved? (sorry i'm not good at summaries)

Fake Relationship AU. In which Tsuna can't believe the hottest guy on campus agreed to the crazy plan his friends devised to get him away from his 'ex' (who was really a stalker) and Reborn who has no idea what to make of Tsuna and his crazy friends or why he makes a good fake boyfriend (aside from his father's power.) OR the AU where Reborn is the (lonely) normal one.

It wasn't Tsuna's fault that no one /listened/.

Tsuna has never been normal, he knew that, but no one else did and he was finally getting his life back, so he would prefer to keep it that way. Except he doesn't get much of a choice in the matter when a strange man appears, claiming they have a connection. Tsuna can't help but be a little incredulous

This was not part of the plan. Wait, he could fix this. After all, how hard could it be to raise a kid by yourself? (Famous last words, Iemitsu.) Iemitsu tries to be a competent father. He succeeds… with some interesting results. (Or the story of how baby Tsuna has all of Vongola wrapped around his tiny sticky fingers).

He had only come here to fulfill a dying wish from a younger version of himself, to take his place in this world as Sawada Tsunayoshi. That had been fine, boredom plaguing him constantly in his long life as nothing seemed to matter anymore. So when Reborn arrives to train him as Vongola Decimo, he ends up with something a little more. Dark!Tsuna, Dark!Universe, slow R27 COMPLETE

The new neighbor of apartment 15 scares the heck out of 5-year old Tsuna. So does school and just about everything else. And it's only natural that the hell that is school, and his neighbor, becomes more hectic than he expected (or wanted). It's his luck. He just wishes that the neighbor wouldn't laugh at his pain.

Tsuna was always annoyed. Well, not exactly always but mostly and it always left him tired at the end. So when God himself offered him a break and have a vacation on Earth, he happily accepted even though he didn't like humans. When he thought that he was now at his peaceful moment, he just have to bump on some espresso lover who also wasn't human nor a kind of being like him.

The seemingly peaceful kingdom of Hyrule has a dark past, and when that past rears its ugly head once again, it's up to a historian with a greater link to the legends than he ever imagined, a soft-spoken mage who knows more than he lets on, and a lone shadow who remembers that which time forgot to stop those who wish to change the course of history forever. [Post series]

As Tsuna looked at Reborn's twelve year old self, he realized how much of an irony this situation actually was. Time-travel. Post-manga.

Tsuna's the foolish type to give a bit of his heart to anyone he meets. No one ever wanted his ugly heart shards until he met his Guardians. No one ever treasured his heart shards until them either. Hints of All27 and R27. Magical Realism. Will be 5 Chapters.

This is a story which contains drabbles about people basically not agreeing with who is in Tsuna's family.  And Tsuna thinking that those people are complete idiots.  This will also have some Iemitsu bashing who doesn't like Tsuna taking side of his family instead of focusing on their allies.

Shortly after the Representative Battle, the Arcobaleno regained their adult forms and Reborn leaves to continue his lone wolf hitman thing. Tsuna is left with mixed feelings and a good dash of resentment, but time passes and he continues on the path to becoming a Mafia Boss (reluctantly). One day he's approached by a mysterious woman who asks him to protect her child. R27.

[COMPLETE] ... How many possibilities that a meeting would lead him here, in the hideout of the World's Greatest Hitman? Strong!Tsuna, Smart!Tsuna, Tsu-kun is already Vongola Decimo and the two love-birds don't know each other. Not directly. Rated M. [R27]

"Welcome to the mafia, Decimo." "Thank you," Tsuna said. "I'd appreciate it more if there wasn't a gun pointed at my face." 100 prompts centering around Reborn and Tsuna. Slight AU and eventual R27

"We do not let go, Tsuna..." He spoke. Those words echo in his head, but in his heart. He knew. It was too late. When they first saw him. They were curious by the small boy. Now...they want him. They will stop at nothing to get what they desire. Arcobaleno27

(Soulmate!AU; Gen) Everyone in the world is born colorblind, destined to only see color once they've met the eyes of their soulmate. Tsuna meets his soulmates one by one, and gains the ability to see a new color with each first meeting.

All Sawada Tsunayoshi could do was to watch the people he cares deeply leaves him all alone. Solitude is all company he will ever have and time was his greatest burden and enemy. Forever is his curse. Will he remain forever alone or not? Immortal!Tsuna, Strong!Tsuna, Smart!Tsuna. Immortal AU! Arco27! Eventual!R27

"I really wasn't expecting this" Fon says sighing "After all, his history of girlfriends, have always been women with a strong personality or with a body to make the best top model jealous. It is unlikely of him to be with someone so innocent." "What can I say?" Luce started saying as if she was talking to herself. "... I think coffee brought them together." R27

"Don't stare at me like that." "Meow." "No, I'm not going to give you my breakfast." Poof! "Please?" "No." Cat!Tsuna. R27 fluff. Maybe M in the future.

The Ninth questions Reborn's sanity and thinks that making him babysit indefinitely will fix his bloodthirsty ways. Reborn is less than impressed. His first project? A five-year-old called Sawada Tsunayoshi who thinks there's no place in the world for him. Oh, god. This is so much harder than assassinations.

Hell Dog Vlad has done something that would make most people believe that he is suicidal. Kissing a gangster is a bad idea, especially if the other gangster is a guy...who can be violent when provoked. Read author's note please for more information. Enjoy

Alucard is forced to work with Alexander Anderson, infiltrating a monastery in the guise of a Catholic priest to track down a vampire hiding inside.

AU. No-good Tsuna was all just an act. In reality, Tsuna was a famous mafia hacker hidden by the name Erebus that could bring destruction to all mafia Famiglias. But when a hitman called Reborn appears to train him to be Vongola Tenth, things just got a whole lot more complicated. If his identity is found out, he just might be killed by his own tutor.

In this story Tsuna grew up in the mafia, his parents weren't often around- to the point Tsuna almost didn't remember them- so instead, little Tsu was raised by his many different Mamas and Papas. This is a collection of his milestones and those who were there to witness them. First up...!(after prelude :p) Adventure cause what else is child-rearing?

Welcome to Mafia Row, where normal criminals fear to tread. When the Strongest and Highest Ranked House get a new addition, why does it seem as if the mood has lightened? Parental!Arcobaleno now including Bermuda. Involves nearly every Mafia Family too.

With the curse removed at last, what Reborn didn't expect was to find himself at another timeline when he woke up from his sleep. And why was dame Tsuna as a baby? Where were they? AT (Alternate Timeline) right after the final chapter of the manga... title is lame, sorry orz

Reborn shoots dame-Tsuna with a dying will bullet since he can't seem to spit anything out when Kyoko confesses to him. But when he turns to his hyper dying will mode, he rejects her! What's more is that dame tsuna and HDW Tsuna has split into two for double the Tsunas! Reborn tries to find out why the boy rejected his long time crush but ends up with two ukes. smut 27R72

Tsuna's an adorable kid, but Giotto decides that he needs to let him experience the world for himself while G completely disagrees. Worried of exposing him to the world full of weirdos, G secretly tells him the three rules that'll protect him from hungry predators that can lurk in any corner. Is it saving his life or actually making it worse? R27

When the Hellsing Organization is in dire need of help, Integra comes up with a way to ask for help. The Vatican's.Both parties could become more powerful than they already are when united. They could help, and they do with a contract. But what would happen if said contract happened to be a marriage contract..? Rated M for later chapters. MxM, Yaoi. Forced marriage.

Because chocolates and pocky are overrated, Reborn decides to come up with a different type of gift for Tsuna's first Valentine as Vongola Decimo. R27 Oneshot.

Reborn's the new secretary. Tsuna's the CEO of Vongola Corporations with an insatiable addiction to sweets. Who was the first to fall? R27. Office AU. One-shot. Contains Yaoi (boyxboy). Don't like, don't read. In celebration of the two birthdays.

When Reborn receives a letter from an old friend, the Grimm Office leaves London to take on a new case, a deadly enemy, and a series of dark secrets that could easily tear Reborn and Tsuna apart. Sequel to Welcome to the Grimm Office. R27

Alucard and Seras Victoria are reduced to forms they should never have been able to return to. Anderson enters the story as both of the vampires are at his relative mercy...

Because being a dentist sucks. It sucks even more being a dentist for the supernatural. Because even the supernatural need to take care of their teeth. R27. AU.

On these floating islands, words have power and Tsuna is determined to find the man who left these words under his skin. AU-fantasy R27.

Anderson has created a new weapon much to Alucard’s surprise. One that will both claim the vampire and suck the dead right out of him! AlucardxAnderson