Harry Potter and Sword Art Online/ソードアート・オンライン
Crossovers
1
Made In Darkness » by Yaniquers4ever
A Dark and Gloomy morning, A strange young girl, and a mysterious stranger. A story about love, deceit, and violence.T, English, Drama & Romance, chapters: 6, words: 3k+, favs: 2, follows: 1, updated: 12/7 published: 12/18/2022
220 Mystic Knight Online: Worlds to Sow » by jgkitarel
The World Seed is a tool created by Kayaba to ensure that Virtual Reality would remain a part of people's lives and Steel Phoenix has been "gifted" with the responsibility of determining what should be done with it. And others would certainly be interested in this development.T, English, Sci-Fi & Adventure, chapters: 14, words: 96k+, favs: 1k+, follows: 1k+, updated: 10/28 published: 9/27/2018, [Harry P., Silica/Keiko A.] Kirito/Kazuto K., Asuna/Asuna Y.
46 Chevalier mystique en ligne » by haruka24
Traduction de Mystic Knight Online, le monde magique n'est pas aussi ignorant du mode de vie des moldus qu'il semble, et Lucius Malfoy a une idée de comment avoir Harry Potter hors de son chemin. Maintenant HArry est au Japon et piéger dans un monde virtuel d'épée. Coupé de ses amis et alliés, il doit s'en faire de nouveaux et s'habituer au monde d'illusion qui est bien trop réel.T, French, Adventure & Friendship, chapters: 37, words: 262k+, favs: 90, follows: 92, updated: 4/15 published: 3/23/2017
8 (It's a Universe in Progress) » by Vorpal Quick Blade
Side stories, AUs, and crack stories from Nephilim Witch.T, English, Romance & Fantasy, chapters: 9, words: 20k+, favs: 86, follows: 94, updated: 11/6/2023 published: 2/24/2018, [Harry P., Kirito/Kazuto K.]
43 Harry's Game » by fanfictionfan123456
Kirito really died when he killed Kayaba. No one is happy about that. Harry Potter was supposed to be the chosen one who brought magic into the next millennium but instead, was manipulated into dying before his time. No one is happy about that. Two boys, both so similar, both suffering. But what if it didn't have to be that way? Destiny appears to both boys offering them a trade. KK+, English, chapters: 4, words: 3k+, favs: 196, follows: 261, updated: 10/29/2021 published: 3/14/2019, Harry P., Kirito/Kazuto K., Asuna/Asuna Y.
39
Player 6243 » by DragonsBC
Harry Potter left Britain to get away from Magic. After 20 years of normal life he is drawn into the game of SAO by accident. Who and what will he become in a world where violence is the only answer to nearly every problem. Un-Beta'd and first time writing.T, English, Adventure & Friendship, chapters: 7, words: 25k+, favs: 412, follows: 445, updated: 8/16/2021 published: 6/8/2020
10 Alfheim » by GinBara AkaTora
Dumbledore arranges for some students of Alfheim to attend Hogwarts to compare their schools... or so he says...K+, English, chapters: 10, words: 6k+, favs: 28, follows: 33, updated: 1/31/2021 published: 10/1/2019
18 Magicus Ensis Alicilization » by darksider82
Magical Ensis sequel. Roughly follows latest series.T, English, Adventure, chapters: 7, words: 10k+, favs: 118, follows: 137, updated: 9/13/2020 published: 7/4/2020, Harry P., Kirito/Kazuto K., Asuna/Asuna Y., Argo
13 Rewrite: The Thirty-Fourth Knight by Pheles65
James and Lily were incarnated in the Underworld under new identities, Alice and Eugeo. Both want their son more than ever so they have gone to the Administrator to bring him to the Underworld where he'll be raised as an Integrity Knight. How would the wizards react when their savior is an Integrity Knight with new abilities? How would they react when James and Lily are alive?T, English, Family & Adventure, words: 2k+, favs: 122, follows: 130, 8/17/2020, [Alice Schuberg, Eugeo] Harry P.
6 Harry Synthesis Thirteen by Blake the Swordsman
Harry Potter or as he prefers to be called Harry Synthesis Thirteen is summoned to Hogwarts on him eleventh birthday. But why is it the Triwizard Tournament? Find out inside.K+, English, Fantasy & Adventure, words: 2k+, favs: 106, follows: 113, 7/18/2020
20 The 34th Knight » by Pheles65
Alice found a four-year-old Harry Potter being abused by his family and taken back to the Axiom Church. What would happen when an Integrity Knight enters Hogwarts, how would the school react to this development?K+, English, Family & Adventure, chapters: 8, words: 10k+, favs: 202, follows: 210, updated: 7/15/2020 published: 4/17/2020, Harry P., Alice Schuberg
Breaking the Rules At Ravenclaw Tower by Tigercry
Asuna can't believe after three years she still follows Liz up to Ravenclaw tower late at night to hang out with their close friends across all different houses minus the boys of course. She also can't believe that Caylee hasn't reported them to a teacher as a new Prefect and that Caylee and Liz haven't killed each other yet.T, English, Humor & Romance, words: 4k+, favs: 7, follows: 6, 7/13/2020, [Asuna/Asuna Y., Kirito/Kazuto K.] [Argo, OC]
254 Magicus Ensis Art Online » by darksider82
Harry Potter's won but his troubles are only just beginningT, English, Adventure, chapters: 36, words: 68k+, favs: 1k+, follows: 1k+, updated: 2/5/2020 published: 7/2/2015, [Kirito/Kazuto K., Asuna/Asuna Y.] Harry P.
4 Mahoutokoro » by GinBara AkaTora
SAO characters attend the magical Japanese school of Mahoutokoro. They attend the Triwizard Tournament in place of Durmstrang Institute.K+, English, chapters: 6, words: 3k+, favs: 24, follows: 25, updated: 9/29/2019 published: 9/9/2018, Silica/Keiko A.
9 Potter's Kirito (Version II) » by J'adore Foxy T-T
An alternate version of Potter's Kirito.T, English, Romance & Sci-Fi, chapters: 2, words: 2k+, favs: 75, follows: 98, updated: 4/27/2019 published: 1/22/2018, [Harry P., Kirito/Kazuto K.]
15 The Witch King and the Prisoners of Aincrad » by TekuyaVermilion654
Hey There Guys and Girls, Tekky here, Bringing you the Third part of the Return of House Emerys Series. For all of you coming back to read it, welcome back, and for all of you just joining us, I hope you enjoy, I do not own Harry Potter or Yu-Gi-Oh, Tek Out.T, English, Adventure & Sci-Fi, chapters: 4, words: 9k+, favs: 67, follows: 68, updated: 4/11/2019 published: 12/21/2018, [Harry P., Luna L.] [OC, Astoria G.]
1 Unlimited Continues » by Supersilver46
What was supposed to be a normal day playing a new video game, soon turns into a deadly trap...T, English, Horror, chapters: 2, words: 2k+, favs: 20, follows: 33, updated: 4/6/2019 published: 1/23/2019, Harry P., Hermione G.
477 Mystic Knight Online: All The World's Made Strange » by jgkitarel
After two years, they are finally out of SAO, but the real world is not how they remembered it. They are now strangers in a familiar land. Now they have to try to adjust to a new world... again. But what about those they left in the real world? Will they like the changes that everyone has experienced?T, English, Family & Friendship, chapters: 18, words: 147k+, favs: 2k+, follows: 1k+, updated: 9/9/2018 published: 9/13/2017, [Harry P., Silica/Keiko A.]
3 The Prince of Hogwarts by Helgazar Gryffinclaw
A little one-shot about a certain boy and his incurable curiosity. Set during Harry Potter and the Order of the Phoenix. Not canon.K+, English, Humor, words: 298, favs: 3, follows: 7, 7/20/2018, Harry P., Severus S., PoH
6 Ilvermorny » by GinBara AkaTora
SAO characters attend Ilvermorny School of Witchcraft and Wizardry. They go to Hogwarts for the TriWizard Tournament instead of Durmstang Institute.K+, English, chapters: 7, words: 2k+, favs: 31, follows: 38, updated: 6/6/2018 published: 7/7/2017, Kirito/Kazuto K.
353 Rise of the Archer » by Mrs.InsaneOne
A curious Harry sneaks his cousin's discarded gaming equipment into his cupboard and promptly falls in love with the world inside Sword Art Online the first time he logs into the game. No Pairings. Pre-Hogwarts. Smart!Harry, Slytherinish!Harry, Shy!Harry, Stubborn!Harry, & Paternal!Klein. Full summary & warnings inside.T, English, Sci-Fi & Family, chapters: 10, words: 75k+, favs: 1k+, follows: 2k+, updated: 3/25/2018 published: 12/31/2017, Harry P., OC, Klein/Ryoutarou T., Lisbeth/Rika S.
159 The Lightning Flash's Companion » by Gamer95
Vernon and Petunia buy SAO for Dudley, but decide to test if it's safe using Harry. Now trapped in the game, Harry is confused and scared at first...but it turns out to be the greatest thing that ever happened to him when Asuna finds him all alone... No Kirito. Kirito is boring, bland and I don't like him.T, English, Family & Hurt/Comfort, chapters: 7, words: 10k+, favs: 877, follows: 1k+, updated: 3/17/2018 published: 2/20/2015
125 IRL And All Realities » by ozsia
The first time he picked up Gryffindor's sword he had been young and terrified. The second time he fumbled the hilt, he had still been young and he had still been terrified. The third time? He was not much older and no more prepared for the world he had just entered, nor for the enemy he will face in order to win this twisted game of life and death.T, English, Romance & Hurt/Comfort, chapters: 7, words: 41k+, favs: 888, follows: 1k+, updated: 3/17/2018 published: 7/27/2015, [Harry P., Kirito/Kazuto K.]
3k+ Magic Online » by Mrs.InsaneOne
It has always been said that magic and technology did not mix; too bad no one ever mentioned that little fact to young Harry Potter. Add in one mad genius bent on destroying the lives of ten thousand people by trapping them inside of his online virtual reality game and you have the makings of a very dangerous brew. HP/HG (Chaps 5-8 Edited.)T, English, Drama & Sci-Fi, chapters: 46, words: 288k+, favs: 6k+, follows: 7k+, updated: 2/5/2018 published: 7/20/2014, [Harry P., Hermione G.] Agil/Andrew Gilbert Mills
3 Potter's Kirito (Version I) » by J'adore Foxy T-T
SAO rewritten to now include the Harry/Kirito pairing.T, English, Romance & Sci-Fi, chapters: 2, words: 902, favs: 42, follows: 51, 1/22/2018, [Harry P., Kirito/Kazuto K.]