best crossovers
63 stories
𝙠𝙣𝙮, 𝙨𝙞𝙗𝙡𝙞𝙣𝙜𝙨 by _yyunaa_
_yyunaa_
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"Don't worry, Rui. Nee-san will always be here with you, even if you cannot turn back into a human," He remembers her then. He remembers all the effort she has put into. He remembers the warmth of her back as she often carried him around the house. While she does the chores in a splendid manner, keeping it clean and free of dust. He remembers those words she would speak to him when putting him to sleep. He remembers being adopted into her family, only to bring great tragedy. Yet, she didn't blame him in any sort of way. Telling him that it was God's choice to take away her family. He remembers her effort in protecting himself back then, preventing him from getting killed. Trying her best to gain the trust and faith of all the demon slayers she has crossed path with. Only to become, the Shadow Hashira that vowed to return him to human.
Demon Slime | Demon Slayer x Rimuru by TheFreshWaffles
TheFreshWaffles
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3 years after the defeat of Yuuki... In this timeline, Rimuru is bored and getting increasingly impatient. In a hope to satisfy this eternal boredom, he ends up, with the help of Ciel-sensei, dimension-hopping into the world of Demon Slayer. How will things play out in this new world and how will the story of Demon Slayer change? (Rimuru is very heavily nerfed, at least for now). *I DO NOT own Demon Slayer or That Time I Got Reincarnated as a Slime. The characters and plot that are depicted in this story either belong to Koyoharu Gotouge, or Fuse. All art in this story also belongs to its respective owners and I do not own them in the slightest.
The Clashing of Two Worlds by YeeJuiceMan
YeeJuiceMan
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    Parts 27
Soon after the fall of the Re-Estize kingdom, three lizardmen in the Great Lake discovered something never before seen. Upon further investigation, it was revealed that it's some sort of "highly dangerous object?!" How would Ainz and his group respond? On the other side, Rimuru Tempest's subordinates discovered a similar phenomenon. It wasn't long before unknown beings appeared from it. How would Rimuru and his group handle the situation? Read as the story between two different yet similar worlds connected via a peculiar connection unfolds, and how things play out as the time passes! No. 1 in #rimuru (former), #overlord, and #tempest! Thank you for your guys' support!
Class 1a takes a trip to Camp Half- Blood  by littlexsilverxheart
littlexsilverxheart
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Percy Jackson crossover with BNHA that's it. that's what this story is about. sorry btw i suck at writing descriptions hope you like my writing :) [disclaimer: chapter art does not belong to me!!] [Also, none of these characters belong to me, Rick Riordan is the owner of the Percy Jackson characters and Kōhei Horikoshi is the owner of the My Hero Academia characters]
Are Ultimates and Quirks the Same? by AquaShowers173
AquaShowers173
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The cast of Danganronpa v3 get sent far into the future in which Junko nor Monokuma are a thing. Hope nor Despair. There is people with unnatural abilities. What are they? How can humans do this? Maybe they're not actually humans? U.A. High School takes interest in these high schoolers and enlists them into the school to see what they got. They will not take part in the any of the school activities that involve a quirk unless they are willing to practice with each other. U.A. Also wants to house these high schoolers to help them escape from their past. They want to help the high schoolers forget about Danganronpa and it's whole existence so they can live a normal life...... But can they really escape from it...? Can the help of others that participated in the killing game help them escape from that life? Did the mastermind come back as well too....? (⚠️Excessive cursing ahead because of Miu and Bakugo⚠️) (Art was made by @KitnitOfficial . I swear, their art skills are beautiful)
Potter Watch [a HOO/HP fanfic](finished) [Demigods at Hogwarts] by Hogwartschick
Hogwartschick
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After the Gaean war is over for the demigods and two years have passed, they are invited, by a strange new magical society they've never heard of, to go to a strange school for wizards called Hogwarts. Will Annabeth be the only one excited for more education? Harry, Ron, and Hermione travel to a place they've never even heard of before- a training camp for 'demigods', whatever they are. Camp Half-Blood. Their mission? Convince at least seven of the inherently suspicious demigods to come to Hogwarts to promote magical peace. Their mission is accomplished... with interesting outcomes, some of those outcomes being... DUN DUN DUN... some INTERFANDOM SHIPS!!!! The book is finished, so you can read with no fear of coming to an annoyingly unfair cliffhanger. Thanks, and love all you readers, Verity King, teen author Tune in to Potter Watch, all ye that want to know what happens!!!!
The Ajin Avenger by moonrabbit21
moonrabbit21
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All finally seems to be righting itself in Kei Nagai's world; his sister no longer despises him with ALL of her being, his friendship with Kai seems to be improving, and he is no longer being hunted down by the government. All is perfect... until he wakes up falling. Crash-landing (literally) into another dimension, Kei captures the attention of a specific organization when he falls onto their Helicarrier. A specific one-eyed Director decides that he is perfect for the group of beings he is assembling to save Earth from a god.
Weird relatives by RusEmp
RusEmp
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I'm really bad at summaries. Danny needs to protect his only now known nephew. How hard it can be?
Shit! Wrong universe! Bnha reader insert.  by Quince_gelly
Quince_gelly
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Y/ns day started out so fucking shitty. They woke up late, with a headache and back pain, had to wear their Bakugou pjs in public, and fell through a magical puddle which yeeted them into class 1-A Y/n stumbles in, with their sketchbook full of horny Kiribaku fanart, and a whole lot of explaining to do about why the fuck they are from a world where 1-As universe is from an anime. Y/ns adventures range from having to do things such as spill the tea about ships, fanfics, and other embarrassing matters, to getting Kiribaku becoming cannon because Bakugous tendencies to explode anyone who flirts with Kirishima was starting to get out of hand. What will y/n do when suddenly known as "the anime guy"? Will y/n ever return to their home? Will they even want too? Find out, in Shit! Wrong universe! • y/ns based off of me. • gender neutral reader • a little of Bnha x reader but not a lot tbh. • a crackfic with a little plot. • based off of a recurring dream of mine. Idk why it's a dream I keep having it just is. I don't even own any Bnha merch ; - ;
Nothing From the Gods by shadowhuntervictor
shadowhuntervictor
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Percy hasn't been the same since the Giant War. He has been changed, and it's not for the better. When he stumbles into the Avengers' arms, they have trouble getting along and sharing their pain. However, they know Percy is not well and will do anything to help him. This story deals with heavy topics and Percy does not just get over them within the first few chapters and skips happily into the sunset with the Avengers. This deals with pain and hardships. This can be very cliche at first. But please read at least ten chapters before deciding. It gets better as it goes, just like any book. It was also written before Spider-Man: Homecoming, The Magnus Chase series, and Trials of Apollo. Completed!