338Thanatos Ascending » by best boy "Do you know the name you had before you became Haru?" I jump, spinning and placing a hand on my lower back to pull my tantō— But there's no tantō there. I am not Miura Haru here. "Hello," Mukuro says, and he smiles. I think it's supposed to be a pleasant smile, but it makes a shiver run up my spine instead. "I don't know." I reply. "You're a terrible liar." He says. (?/SIHaru)
Katekyo Hitman Reborn!, T, English, Hurt/Comfort & Romance, chapters: 21, words: 126k+, favs: 956, follows: 1k+, updated: 3/30/2022 published: 7/17/2014, Haru M., Uni, Vongola 10th Generation, OC
64Thunder Child » by xXLuneaXx When Oliver had died, he had not expected to wake up again with small flailing hands reaching for the skies. Especially not with the pitched wails that wouldn't stop no matter how hard he tried. He was surprised, bordering a mental breakdown when he finally realised with a mortification that reincarnation was real. And it had to be Lambo Bovino of all people.
Katekyo Hitman Reborn!, M, English, Hurt/Comfort & Family, chapters: 6, words: 30k+, favs: 376, follows: 455, updated: 11/20/2020 published: 10/16/2019, Lambo, Reborn, Vongola 10th Generation, OC
285The Sawada Family Takes No Crap from Nobody » by GC4life Sawada Nana had many secrets. Some were simple (where the cookies were hidden away from small hands). Some were big (being reborn from a man to a woman was an... interesting change). Either way, Nana had kids to look after, and if the world thought they could take even one of the Sawada kids by force they had another thing coming.
Katekyo Hitman Reborn!, T, English, Family & Humor, chapters: 26, words: 219k+, favs: 938, follows: 994, updated: 6/16/2020 published: 5/26/2019
372Cries of the Heart, Echoes of the Night » by Marshmellowtime The end of the world did not look the way it was supposed to—all fire and collapsing buildings and screaming people. No, the end of the world actually came in the form of a toddler in an expensive suit with curly sideburns and plans to turn your childhood friend into a first-class mafioso. Oc/?
Katekyo Hitman Reborn!, T, English, Romance & Humor, chapters: 3, words: 30k+, favs: 734, follows: 831, updated: 4/8/2020 published: 12/17/2011, Reborn, Tsuna/Tsunayoshi S., Vongola 10th Generation, OC
39Nana's Imouto » by Megi Keishii I woke up in park, dusty like I dug myself out from a grave. Sure, I expected adventure, a fun awesome family. I didn't expect pink grenades with matching smoke that tasted like cotton candy, tiny babies with really nice suits and outfits. And I didn't expect to be adopted by one of the most kindest people in anime; Nana Sawada. SI-ish, rated T for sarcasm, 90s/TV/Movie references.
Katekyo Hitman Reborn!, T, English, Humor & Adventure, chapters: 15, words: 22k+, favs: 144, follows: 167, updated: 3/30/2020 published: 3/1/2015
205Metempsychosis » by potato-oatmeal So I died and went to a different world, ended up as a spazzy teen's younger sister and saved the world along with said spazzy teen. The end. Oh, I was joking, I mean there's gotta be more to the story than that, right? I mean, I certainly didn't mention the tall-as-houses robots wrecking our garden and destroying dad's beloved path...[ABANDONED]
Transformers, T, English, Adventure & Family, chapters: 20, words: 70k+, favs: 428, follows: 468, updated: 3/24/2020 published: 6/10/2014, Sam W., OC
1Blinding Light » by Dreams of Fantasia I lived a fairly standard life at first, a normal kid in a normal quiet town. Yet everything changed the moment I saw that light. School bullies or mafiaso, I don't care; for that light to burn strong, I will do anything.
Katekyo Hitman Reborn!, T, English, Adventure, chapters: 2, words: 3k+, favs: 5, follows: 13, updated: 1/10/2020 published: 10/28/2018
1Wind, The Guardian Of A True Sky by Nazuki Hanae After being reborn in a different world, Shikamatsu Yuuki has to pay the price by being a guardian. Not any normal guardian... It's an angel guardian. But this angel is cold-hearted and acts more like a demon despite being called angel. What changed his heart is the life that the brunette, Sawada Tsunayoshi experienced.
Katekyo Hitman Reborn!, T, English, Hurt/Comfort & Friendship, words: 1k+, favs: 13, follows: 13, updated: 1/5/2020 published: 8/28/2017, Tsuna/Tsunayoshi S.
16For What is Worth » by Lazy Calligraphy Master More than 10 years of yearning and waiting. As strings of fate, slowly tangle itself until it can't be undone, Kaoru once loved a boy who now returned as a man before him. Just how can Sawada Tsunayoshi earn those affections again when facing such an indifference attitude. But he slowly realizes, there so much more than what Kouru lets on than he thought. TsunaXmaleOC
Katekyo Hitman Reborn!, T, English, Romance & Hurt/Comfort, chapters: 4, words: 7k+, favs: 63, follows: 84, updated: 11/23/2019 published: 8/24/2015, [OC, Tsuna/Tsunayoshi S.] Vongola 10th Generation
5Kichimaru's Dance » by Oubeniel If I had to tear this world to pieces and burn it to dust to return home. That's good. I am willing to do that right now. [SI-OC as villain]
Katekyo Hitman Reborn!, T, English, Adventure & Drama, chapters: 2, words: 7k+, favs: 38, follows: 57, updated: 11/6/2019 published: 10/28/2019, Mochida K., Vongola 10th Generation, OC
16Bungo Stray Dogs: The Lost Relatives » by SarahMaula154Kila0ooo [If Atsushi have relatives...] Seorang gadis yang tak sengaja ditemui Dr. Yosano dan Kenji, serta Dazai mempunyai penampilan yang sangat mirip dengan Atsushi. Dari desa kota sebelah, ia datang ke Kota Yokohama untuk mencari seseorang. Dan, marga orang yang dicarinya itu adalah... (Warn/Note: Fanon & Canon)
Bungou Stray Dogs/文豪ストレイドッグス, T, Indonesian, Drama & Supernatural, chapters: 13, words: 63k+, favs: 10, follows: 13, updated: 8/9/2018 published: 6/3/2017, O. Dazai, N. Atsushi, OC, Armed Detective Company
89The Silent Moon » by Silken Moon The Moon reflects light from the Sun. Without the presence of the Sun, there is no Moon. But without the presence of the Sky, there can be neither. This is the story of how the Moon came to be through the existence of the Sun and the Sky. This is the story of Vongola's Hidden Guardian, the Silent Moon. MaleOC
Katekyo Hitman Reborn!, T, English, Adventure & Friendship, chapters: 10, words: 53k+, favs: 418, follows: 400, updated: 4/10/2017 published: 7/2/2013, Tsuna/Tsunayoshi S., Ryōhei S., OC, K. Hibari
137Fujikage Ryota » by TsubakiTwilight Tsuna stares up at the other boy. "W-Why… why did you punch him?" "Because he was an idiot, that's why. And like I keep saying, I don't like bullies." Ryota pauses. "Besides I told you already, we're best friends and I don't let anyone hurt my best friend." Something warm blossoms in Tsuna's chest and now he's crying for a different reason. AU! OC! Pairings unknown.
Katekyo Hitman Reborn!, T, English, Friendship & Family, chapters: 25, words: 31k+, favs: 416, follows: 464, updated: 1/25/2017 published: 8/4/2016, Tsuna/Tsunayoshi S., OC
3k+Kyoko » by Discoabc "So, you are an infamous Mafioso dealer, part of both the Yakuza and Mafia, able to hack, one of the strongest illusionists in the world, wanted in several countries and STILL the number one idol in school?" "You forgot how I was extremely extreme too." "…Kyoko, you have some major issues." Being reborn as Miss. Sparkles is not fun at all. Slightly AU
Katekyo Hitman Reborn!, T, English, Friendship & Drama, chapters: 105, words: 704k+, favs: 1k+, follows: 1k+, updated: 9/25/2016 published: 8/30/2013, Hana K., Kyōko S., Ryōhei S., OC
510Reborned as Miss Sparkle's twin » by Scarlet Clown Okay, I died. Simple as that. How I died is one of the most cliché way to die, being hit by a truck. Somehow, I got reborned as Miss Sparkle's twin sister. Oh the joy! Well whatever. As long as I get to touch Tuna-kun hair... 18OC and 27OC, Different endings. Slight AU.
Katekyo Hitman Reborn!, T, English, Humor & Romance, chapters: 21, words: 29k+, favs: 718, follows: 861, updated: 5/18/2016 published: 11/2/2013, K. Hibari, Tsuna/Tsunayoshi S., Vongola 10th Generation, OC
368Guadagnare » by synpitou Nice to meet you, I'm Yamamoto Takeshi. Except I'm a girl. And my name isn't Takeshi. Female!Takeshi OC/reincarnation
Katekyo Hitman Reborn!, T, English, Adventure & Friendship, chapters: 19, words: 36k+, favs: 1k+, follows: 1k+, updated: 2/17/2016 published: 12/29/2014, T. Yamamoto, Enma K., Vongola 10th Generation, OC
28Things Just Got A Lot More Complicated » by Maiden of the Sky Follow the adventures of Saki (OC) and her journey to become a great voice actress while trying to attain a "normal high school life", sing her heart out and also being admired by more than one of our Vongola hotties. Well ain't she just a lucky lady? I don't think so. (Sorry for the crappy summary) 4YL!verse
Katekyo Hitman Reborn!, T, English, Romance & Drama, chapters: 30, words: 125k+, favs: 70, follows: 65, updated: 12/22/2015 published: 5/20/2015, Kyōko S., T. Yamamoto, Tsuna/Tsunayoshi S., OC
43Artificial Villain » by Abbirinth You're the hero and I'm the villain and forever my brother you'll be.
Katekyo Hitman Reborn!, T, English, Family & Hurt/Comfort, chapters: 5, words: 6k+, favs: 108, follows: 108, updated: 1/15/2014 published: 1/13/2014, Tsuna/Tsunayoshi S., Vongola 10th Generation, OC