311The Life and Times of an Average Coward » by Xielle Sky
This is where the scaredy cat is the main character of the story. "You know, you're not as cowardly as you think you are Zenitsu." "Is that an insult or a compliment?" "Well..." OC Reincarnated as Fem!ZenitsuKimetsu no Yaiba/鬼滅の刃, K+, English, Adventure & Friendship, chapters: 24, words: 191k+, favs: 849, follows: 904, updated: 11/11 published: 9/23/2019, Zenitsu A., Tanjirou K., Inosuke H., Nezuko K.
159Ghost of a Chance » by Snow-hime
Not many people knew that Tsuna had a twin sister, and for a good reason. Shizuka Sawada had died the moment they were both born. Now known as Crazy Tsuna, the ghost of his sister helps the unlucky teen navigate his crazy life. "Shizuka, stop pranking Hibari! He might call an exorcist!"Katekyo Hitman Reborn!, T, English, Humor & Family, chapters: 39, words: 61k+, favs: 696, follows: 754, updated: 8/31 published: 4/16/2018, Tsuna/Tsunayoshi S., OC
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How to Obtain a Reverse Harem in Naruto » by Darkpetal16
A rewrite of Sakura. In which a blunt, and eccentric OC is placed into the body of Sakura Haruno at the start of the series. Nothing at all could possibly go wrong. -COMPLETE- Now being put into audio by JazzOfTheSpazz on YouTube for those who want to listen!Naruto, T, English, Parody & Humor, chapters: 30, words: 202k+, favs: 6k+, follows: 5k+, updated: 7/20 published: 4/23/2017, Sakura H., Kakashi H., Akatsuki, OC
164Will of D » by UnknownRegion
Being reincarnated into the One Piece universe is not what one would expect after death. Especially when the 'character' you've been born into is someone who technically doesn't exist. Were things supposed to remain the same, or were you supposed to change them? Only time will tell, supposedly. (OMC is Ace's uncle)One Piece, M, English, Family & Fantasy, chapters: 10, words: 53k+, favs: 873, follows: 950, updated: 7/13 published: 4/24/2018, Garp, Ace, OC, Corazon
1k+Yeah, Kunai are cool but have you had dessert? » by Authorship
Okay, I'll admit seeing my new dad's Hitai-ate was a massive kick in the (thankfully metaphorical) balls. Sorry, but I don't kill people! AKA an SI/OC fic where the girl is more concerned with the alarming lack of pastries...and appropriate female role models...and adopting misfits and cinnamon rolls...err, oops? At least, I get to troll people!Naruto, M, English, Friendship & Romance, chapters: 36, words: 307k+, favs: 2k+, follows: 2k+, updated: 2/27 published: 2/16/2018, Shisui U., Team Seven, Team Ten, OC
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We Choose You! » by Little Miss Bunny
Tsuna's journey from the beginning to handling affairs at the Pokémon League and some things in-between because getting from Point A to Point B took a lot of detours—way too many detours. It wasn't Tsuna's fault that Pokémon liked him too much. Drabble-series. Crackish. All27.Pokémon & Katekyo Hitman Reborn!, T, English, Humor & Adventure, chapters: 13, words: 18k+, favs: 675, follows: 704, updated: 2/5 published: 8/25/2018, Tsuna/Tsunayoshi S., Arcobaleno, Vongola 1st generation, Vongola 10th Generation
1k+Team 7's Secret Motto » by Unleashed Reasoning
Kakashi was bound and determined to make sure that he didn't end up with a dead genin or one that went rogue. Plus, he kinda wanted to rub it in the other Jounin Sensei's faces that his team was just awesome like that, even if they didn't know it yet.Naruto, T, English, Humor, chapters: 20, words: 72k+, favs: 7k+, follows: 7k+, updated: 12/29/2022 published: 8/16/2018, Team Seven
109Oh, Mama, Mama by MissDiRed
[***MOVED***] A typical SI OC story: except MC is Big Mom. Full summary inside.One Piece, T, English, Family & Adventure, words: 88, favs: 1k+, follows: 837, updated: 12/28/2022 published: 11/5/2019, Whitebeard, Big Mom/Charlotte Linlin
3k+Canon Patchworking with Uchiha Ren by MissDiRed
[***MOVED***] A woman from our world dies and then wakes up as an Uchiha brat. Cue freakout and gleeful ripping canon to shreds. Featuring whole Naruto Cast and a sprinkle of OCs. AU, Self-Insert, Fix-It. (And a lot of Canon-Breaking. It's degree of crackishness varies from chapter to chapter, from something fully serious to downright parody at times.)Naruto, T, English, Hurt/Comfort & Family, words: 88, favs: 5k+, follows: 6k+, updated: 12/28/2022 published: 9/11/2016, Genma S., Team Seven, OC
881Blind » by SabastianScott
'What if' is one of life's biggest mysteries. So, 'what if' Mai was blind? 'What if' her pyschic abilities allowed her to sense everything around her, even the fine details of writing on paper? 'What if' really is a mystery. T for future scenes.Ghost Hunt, T, English, Mystery & Supernatural, chapters: 27, words: 225k+, favs: 1k+, follows: 1k+, updated: 9/25/2022 published: 8/19/2012
235Pirate King's Tailor » by Tactition101
When I 'died' in a car crash I never expected I'd have the chance to end up in the One Piece world. There's just one problem, all of my memories of the story line are now gone, with only the words Straw Hat Pirates to give me a clue of what I'm supposed to do. Still, at least I got an incredibly useful Devil Fruit out of the deal. Paramecia VersionOne Piece, T, English, Adventure & Humor, chapters: 11, words: 61k+, favs: 982, follows: 1k+, updated: 9/24/2022 published: 2/20/2018, Strawhat Pirates, OC
9k+ This Bites! » by Xomniac
Sea Kings, sea-sickness, sunburns, a 95% genocidal Navy and more than a million and one other assorted ways to die. It's official: Being inserted into an anime sucks ass... Buuut I guess it could be worse. I mean, look on the bright side: At least I'm sailing with the future king of the pirates. (Self-Insert) [COMPLETE... FOR NOW]One Piece, M, English, Adventure & Friendship, chapters: 98, words: 1994k+, favs: 10k+, follows: 9k+, updated: 9/19/2022 published: 9/19/2015, Luffy, Tashigi, OC
624Sunrise » by BANIX
Tanjiro, protagonist of a fictional story or not, I don't care. My siblings, side characters of a fictional story or not, I don't care. I just want to protect my family as their big brother. So, I continue to dance. (Reincarnated OC as Kamado's oldest sibling. Cover image and fancomic artwork credits: Gooble. Link to fancomic in profile)Kimetsu no Yaiba/鬼滅の刃, T, English, Hurt/Comfort, chapters: 13, words: 61k+, favs: 3k+, follows: 3k+, updated: 4/4/2022 published: 8/5/2020, Tanjirou K., Nezuko K., OC
561Flaming Silhouettes » by DayLightDove
(AU-ish) What if his flames had not forced their way out as quickly as they had? The day he found out he was Satan's son was also the day he lost his sight. Now all he could see was darkness and flaming silhouettes.Blue Exorcist/青の祓魔師, T, English, Drama & Angst, chapters: 25, words: 97k+, favs: 1k+, follows: 1k+, updated: 3/25/2022 published: 5/2/2016, Rin O., Yukio O.
280Fox Tails » by I.XIST4
When Kitsi Inari moved to Paris to attend school the only things on her mind was getting to experience French life and making new friends. Never would she guess she'd have to protect the city while hiding her identity behind a mask. Can she step up and become the hero? If only it wasn't the biggest secret she was hiding. Rating based just to be safe.Miraculous: Tales of Ladybug & Cat Noir, T, English, chapters: 32, words: 433k+, favs: 245, follows: 242, updated: 10/24/2021 published: 6/11/2016, Marinette D-C./Ladybug, Adrien A./Cat Noir, OC
148Frost 霜 » by kirika o7
"You…" he tried to argue but silver hue eyes stared at his blue ocean ones dangerously despite the smile on her face. "Ah, ah, ah…that's enough, Enji" she gleefully laughed inside when she saw her husband fuming. "Bu-" "No" "You!" "Anata" her smile grew wider. There is silence before he answers, "…yes dear". In a world where she gets reborn as Todoroki Shouto's mother. BAMF SI. AU?My Hero Academia/僕のヒーローアカデミア, K+, English, Humor & Romance, chapters: 2, words: 19k+, favs: 1k+, follows: 1k+, updated: 8/14/2021 published: 8/22/2017, Shouto T., OC, Enji T./Endeavor, Rei T./Shōto’s Mother
473The Demons are Back » by FunahoMisaki
When the Straw Hats are captured by Marine Scientists they are changed into Demons or demon forms of themselves. When they're all killed shortly after they reach Raftel and Luffy becomes King...they break the system and go back. Back to four months before Luffy sets sail. But...it's not just their minds...no their bodies and powers go back too. OP!StrawHats Nakamaship! M for safetyOne Piece, M, English, chapters: 23, words: 29k+, favs: 1k+, follows: 1k+, updated: 8/2/2021 published: 10/5/2017, Mihawk, Boa Hancock, Strawhat Pirates, Whitebeard Pirates
197Ventus » by Deacog
Rin takes the Hunter exam in order to accomplish his dream of becoming a Botanical Hunter. Along the way he meets a lot of interesting people. Including a strange clown that keeps referring to him as a...fruit? This is going to follow the 2011 anime. Yaoi! This is rated M, so be advised.Hunter X Hunter, M, English, Romance & Friendship, chapters: 15, words: 128k+, favs: 875, follows: 922, updated: 7/30/2021 published: 12/8/2016, [OC, Hisoka] Gon F., Killua Z.
1k+Detective Midoriya » by rogueptoridactyl
After the sludge incident, Izuku Midoriya's dream was officially crushed. However, a later experience takes the boy in a new direction. Izuku had never really contemplated being a detective, but his whole life he'd only ever wanted to help people with a smile on his face. Thanks to some luck and an entire police station, Izuku's dream is reborn.My Hero Academia/僕のヒーローアカデミア, T, English, Crime & Hurt/Comfort, chapters: 47, words: 138k+, favs: 3k+, follows: 3k+, updated: 6/17/2021 published: 1/26/2019
274 The Thing About Regret » by iremi76
Tsuna and Izuku know all about regret. Deeply and intimately they come to regret many things throughout their lives. Becoming a mafia boss, not having a quirk. Sometimes, regret holds us back. But other times, regret is what pushes us to heights we could only dream off. When pasts and futures collide, where will their regret take them?Katekyo Hitman Reborn! & My Hero Academia/僕のヒーローアカデミア, T, English, Family & Hurt/Comfort, chapters: 31, words: 49k+, favs: 1k+, follows: 1k+, updated: 6/15/2021 published: 9/15/2019, Tsuna/Tsunayoshi S., Shouto T., Shouta A./Eraserhead