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

An incident with the 10-year bazooka leaves Tsuna stuck in the past… What's he gonna to do now? R27, hints of All27 and certain Arcobaleno27 - COMPLETED

AU, Earth and Meraviglie are two worlds interconnected by a barrier however it's only known to a selected few. Those that can travel to the other world and have the ability to make pacts with those in the other world are known as Capturers. Tsuna, having that ability, accidentally stumbles across a humanoid man with a fedora hat. Full Summary inside, Arcobaleno27, main R27

Nono, his parents, and the Arcobaleno are all dead. Trapped in a future that's falling apart, Tsuna must fight with both himself and the dreaded Millefiore famiglia. Sequel to Hacker.

What if Tsuna was smart, like genius hacker smart, but decided to hide it behind an average student exterior. Rating for the fact that this is a Mafia fic and possible dirty language. Rating may go up.