It all began when Byakuran decided to visit Tsuna due to boredom. With an agreement from Reborn, Byakuran sent Tsuna to another dimension which involved magic-Fiore. Meeting Lucy and Natsu after crashing into "Salamander" he joins them in their journeys while in the guild Fairy Tail-waiting for when Byakuran sends him back to his own dimension.

SUMMARY: After Reborn informs that Tsuna and his classmate gonna go on a trip to Italy, they roar in happiness, thinking of the rare chance to travel outside, well except for certain Vongola Decimo and his guardians. Will the trip gonna be fun like how the classmate predicted or is it gonna be bad? Find out in Long 'Fun' Class Trip to Italy.

What happens when Lambo is finally in school, and his older brother Tsuna is famous for being dame? Lambo doesn't like it when his friends are made fun of. Nezu-Sensei is the teacher and he wants a parent teacher conference with Lambos guardian and he will get it one way or another, even if he has to make a house call

AU - Namimori Gakuen – an elite school full of elite pupils, teaching future bosses to success his parents company – mafia related or not. One day, at the beginning of the semester a rumor turned up that the very Vongola Decimo just arrived at Namimori. The whole school is in tumult. Who is it and how will he be! And is it true that he is looking for his own subordinate!

At age three, Tsuna learned some things can't be solved without violence, and he became a delinquent to protect his mother and the people he cares for, but it comes with a risk. He can't associate with them. If he does, they'll be targeted by assassins and kidnappers as well. When a hitman tutor comes and says he'll transform him into a mafia boss, can he finally protect them?

The two worlds are facing a great crisis. Reborn sent Tsuna to Fiore advert this crisis. There Tsuna found Fairy Tail and something unexpected

When Ed crossed over to our world, he lost his ability to age and is stuck as an eighteen year old! Tired of watching his friends die around him, he begins to travel alone around the world. Somehow, he came to work as a teacher in Namimori after the many years of his wandering. How will Tsuna and co. react to this strange, enigmatic new teacher? *EDITING*

Upon request by Reborn and Nono, Giannini has created a new bazooka that can travel dimensions. Claiming it to be Tsuna's new training, Reborn sends him over to the world of Fairy Tail, where he must try to survive until a way to return can be made.