10k+Ashes of the Past » by Saphroneth Time travel, based on the Anime. So, the world ended. That's bad news. Who best to get to fix it? Well, there is this guy with a track record in world saving... Not entirely serious. T rating may be overdoing it.
Pokémon, T, English, Humor & Adventure, chapters: 305, words: 1973k+, favs: 9k+, follows: 8k+, updated: 2/11 published: 8/7/2011, Ash K./Satoshi, Pikachu
532 Kyouya, The Gamer » by Ourliazo We are all fu-ked now.
Katekyo Hitman Reborn!, T, English, Humor, chapters: 50, words: 62k+, favs: 1k+, follows: 1k+, updated: 10/25/2020 published: 5/3/2016, K. Hibari, Tsuna/Tsunayoshi S., Disciplinary Committee
136President to Boss » by AliceVermillion All he knew was that he's being followed by a baby claiming that he's a hitman and was here to train him to be a mafia boss. And damn he still have a student council to handle. AU, Smart!Tsuna
Katekyo Hitman Reborn!, T, English, Family & Friendship, chapters: 7, words: 15k+, favs: 1k+, follows: 1k+, updated: 9/22/2020 published: 6/10/2014, Tsuna/Tsunayoshi S., Vongola 10th Generation, Reborn
45Last Will » by AliceVermillion Reborn was just there to meet the next heir of Vongola and his student when he was met with unexpected things. Now, instead of training him, his job now was to help him rest in peace. AU, Ghost!Tsuna
Katekyo Hitman Reborn!, T, English, Hurt/Comfort & Supernatural, chapters: 3, words: 3k+, favs: 284, follows: 371, updated: 9/22/2020 published: 2/19/2015, Reborn, Tsuna/Tsunayoshi S., Vongola 10th Generation
890 He Deserves Better » by AliceVermillion With the usual twin fic cliche, Tsuna was being mistreated by his family so he decided to runaway. And with that, he found a new not so better family consisting of a crazy bunch. Well, that's life. (Varia, 10th Gen, Millefiore) -Complete-
Katekyo Hitman Reborn!, T, English, Hurt/Comfort & Family, chapters: 27, words: 95k+, favs: 1k+, follows: 1k+, updated: 9/22/2020 published: 6/7/2013, Tsuna/Tsunayoshi S., Vongola 10th Generation, Varia
2k+Y'know Nothing Jon Snow! » by Umodin Y'know, I never realized how much the phrase about life giving you lemons resonated with me until all of this malarkey happened. I should be dead. Instead, I was dropped into the world of Pokémon, turned into a nine-year-old that looked nothing like I used to. To not take advantage of this supernatural opportunity was just stupid, however. And so, I became a trainer. OC-SI
Pokémon, T, English, Humor & Adventure, chapters: 33, words: 200k+, favs: 5k+, follows: 6k+, updated: 8/11/2020 published: 8/20/2015, OC
106Hitman Tutor! » by MommaAster Just what did he agree to? Tsuna would never think his way out of his answer for this one. He just agreed to let Byakuran transport his soul across the worlds, to the one that was part of the original time. "Not a worry! Everything would go your own way! After all, you are Fate's Fool and Saint of Sky himself!" - Rated: T-M - Angst, Family, Spiritual - Pairings? Unknown
Katekyo Hitman Reborn!, T, English, Hurt/Comfort, chapters: 9, words: 36k+, favs: 505, follows: 614, updated: 4/26/2020 published: 2/2/2014, Reborn, Tsuna/Tsunayoshi S., Vongola 10th Generation, OC
1k+To Live and Breathe and Live Again » by FruitPastilles Tsuna was eleven when he was hit by a car and walked away from the incident unscathed. He was twelve, when he fell from his bedroom window and woke to his mother's frantic face with nothing to show for his fall. He was thirteen when he realised he couldn't quite die. Then he turned fourteen and a baby in a suit showed up and nothing else is quite the same.
Katekyo Hitman Reborn!, T, English, Friendship & Hurt/Comfort, chapters: 19, words: 40k+, favs: 5k+, follows: 6k+, updated: 11/7/2019 published: 6/23/2015, Tsuna/Tsunayoshi S.
1k+The Summoning Pact » by FruitPastilles 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
Katekyo Hitman Reborn!, M, English, Romance & Adventure, chapters: 23, words: 117k+, favs: 4k+, follows: 4k+, updated: 11/6/2019 published: 6/22/2014, [Tsuna/Tsunayoshi S., Arcobaleno]
19How It All Began » by Dreaming Of Being Free Katherine is a demigod daughter of Poseidon. Join her on her quest to save her mother and a forgotten goddess. Another thing, she's in love with Nico di Angelo. P.S. This is my first fanfic
Percy Jackson and the Olympians, T, English, Romance & Adventure, chapters: 11, words: 18k+, favs: 14, follows: 21, updated: 6/18/2019 published: 4/3/2014, Nico A., OC
109Inheritance » by FruitPastilles 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.
Katekyo Hitman Reborn!, M, English, Romance & Fantasy, chapters: 2, words: 10k+, favs: 672, follows: 795, updated: 2/26/2019 published: 7/10/2018, Tsuna/Tsunayoshi S., Arcobaleno, Vongola 10th Generation, Varia
200Loyalty » by xXxIcePrincessxXx Kasumi Sato is part of the Kokuyo Gang. Follow her adventure as she gets sucked into the crazy world of the mafia. OC x Mukuro, OC x Hibari, slight Mukuro x Chrome
Katekyo Hitman Reborn!, T, English, Romance, chapters: 59, words: 97k+, favs: 231, follows: 250, updated: 9/3/2018 published: 6/10/2012, K. Hibari, Mukuro R.
65Vongola Catacombs » by Bleach-ed-Na-tsu Angels guard the doors, dying will flames burning eternally in their hands, because even in death, the will of the Boss forever burns bright. When a Vongola boss dies, he is put into the catacombs, and every loyal subordinate to fall has a place to rest there, forever lining the hallways of their dead boss final resting place; protecting them even in death. This is where Bosses go.
Katekyo Hitman Reborn!, T, English, Family & Hurt/Comfort, chapters: 4, words: 11k+, favs: 532, follows: 467, updated: 8/27/2018 published: 12/31/2014, Tsuna/Tsunayoshi S., Giotto/Ieyasu S./Vongola I/Vongola Primo, Timoteo/Vongola IX/Vongola Nono, Vongola II/Vongola Secondo
1k+We Weren't Born to Follow » by Seito "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
Katekyo Hitman Reborn!, T, English, Family & Friendship, chapters: 38, words: 234k+, favs: 3k+, follows: 3k+, updated: 6/9/2018 published: 5/27/2015, [Reborn, Tsuna/Tsunayoshi S.] Vongola 10th Generation, Nana S.
391Not Dame-Tsuna » by xX.Chu-Chan.Xx What if Tsuna chose to fight for himself? To stop the bullying? To stop the pathetic name they have given him? This is a story of an entirely different world. A world where he trusted no one. A world where he saw nothing but isolation. A world entirely different from the world he suddenly woke up in one fateful day. R&R!
Katekyo Hitman Reborn!, K+, English, Angst & Friendship, chapters: 17, words: 63k+, favs: 888, follows: 1k+, updated: 5/23/2018 published: 6/16/2014, Tsuna/Tsunayoshi S., Vongola 10th Generation
95Part-time Mafia Boss! » by Tea-StainedBrain One day Vongola Decimo woke up to find himself in an extremely small budget apartment room. He then found himself without money and having to live normally as a part-timer! But things weren't actually 'normal' as it seemed. Join Tsuna in his journey of self-discovery and solving mysteries of his Parallel World. Adult!Vongola. Part-time!Vongola. Tokyo! No pairings. AU. DARK later.
Katekyo Hitman Reborn!, T, English, Mystery & Humor, chapters: 16, words: 37k+, favs: 189, follows: 264, updated: 3/31/2018 published: 11/29/2014, Nana S., Tsuna/Tsunayoshi S., Vongola 10th Generation
43 The Sky Without Its Elements » by SaberAureum What is the sky without its elements? Without the storm, rain, mist, cloud, thunder and sun; what is the sky without them? Nothing. "Where are your guardians, Vongola Decimo?" A story that features what would happen if Tsuna is without his guardians. Inspired by many Abandon!Tsuna fanfics. There would be some OC, but not too much. Hope you enjoy desu!
Katekyo Hitman Reborn!, K+, English, Angst & Hurt/Comfort, chapters: 14, words: 25k+, favs: 138, follows: 181, updated: 3/30/2018 published: 3/27/2014, Tsuna/Tsunayoshi S., Vongola 10th Generation, OC
103Falling into Darkness » by Cherrina They blamed him for ruining their life. They blamed him for everything. But Tsuna held it all in, hoping everything will go back to normal after a while. But everyone has their own limits and he had reached his. With his revolutionary new powers, he enters their school with his new-found family to fulfill his revenge. Dark!Tsuna Eventual!27R
Katekyo Hitman Reborn!, T, English, Hurt/Comfort & Friendship, chapters: 9, words: 71k+, favs: 258, follows: 271, updated: 3/9/2018 published: 6/20/2014, K. Hibari, Reborn, Tsuna/Tsunayoshi S., OC
26Soul Switch » by TheFuriousMagician Set TYL: Tsuna leaves for a few days and comes back to find his guardians acting strange. Well, stranger than usual. Rated T for swearing.
Katekyo Hitman Reborn!, T, English, Humor & Drama, chapters: 12, words: 20k+, favs: 117, follows: 141, updated: 1/14/2018 published: 9/4/2014, Reborn, Tsuna/Tsunayoshi S., Vongola 10th Generation
19Demon King Tsuna » by zairaswift Tsuna gets reborn as the Demon King in an alternate universe. Light All27
Katekyo Hitman Reborn!, T, English, Humor & Fantasy, chapters: 2, words: 2k+, favs: 152, follows: 184, 1/11/2018, Tsuna/Tsunayoshi S., Vongola 10th Generation