Assassination Classroom/暗殺教室 Crossovers
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Tentacles of Despair by Kouji17 reviews
Koro-sensei in this took the place of Monakuma and my favorite E-class rejects are now fighting it out but this time for their survival and not the Earths. Or rather they did and you are hearing it from the survivors of this Massacre. Yes that is correct I did not change it to a final girl story but I did however put my twist on Danganronpa using one of my favorite anime to do it.
Crossover - Assassination Classroom/暗殺教室 & Danganronpa - Rated: K+ - English - Horror/Mystery - Chapters: 6 - Words: 10,831 - Reviews: 4 - Favs: 8 - Follows: 6 - Updated: 1/6/2019 - Published: 6/26/2018 - Complete
Killer Switch by shokugeek
Inspired by Ryo Kurokiba and Karma Akabane sharing the same voice actor. Ryo & Karma switch bodies and get to know what it's like in the world of chefs and assassins in a day. The two are cousins in this setup. In script form.
Crossover - Assassination Classroom/暗殺教室 & Shokugeki no Soma/食戟のソーマ - Rated: K+ - English - Supernatural/Humor - Chapters: 1 - Words: 3,770 - Favs: 13 - Follows: 10 - Published: 1/2/2019 - Karma A., Nagisa S., Alice N., R. Kurokiba - Complete
The Mafia Teacher by TheSilverHunt3r reviews
When you have a color changing octopus nicknamed Korosensei, government agent Karasuma, and a assassin named Irina Jelavich, all teaching E class, who else could you add? A Italian Mafia boss, anyone? Enter Tsunayoshi Sawada, Vongola Decimo. No slash.
Crossover - Katekyo Hitman Reborn! & Assassination Classroom/暗殺教室 - Rated: K+ - English - Adventure/Humor - Chapters: 19 - Words: 40,412 - Reviews: 147 - Favs: 907 - Follows: 1,056 - Updated: 12/29/2018 - Published: 8/10/2017 - Tsuna/Tsunayoshi S., 3-E Students, Koro-sensei
Issues by THE BLIND KING reviews
Because we all have issues. Various one shots of the girls of RWBY along with Nagisa coming to terms with them. Commitment Issues and Intimacy Issues has been posted here.
Crossover - Assassination Classroom/暗殺教室 & RWBY - Rated: M - English - Romance - Chapters: 5 - Words: 9,820 - Reviews: 4 - Favs: 23 - Follows: 21 - Updated: 12/16/2018 - Published: 1/6/2017 - Nagisa S.
Ultimate Assassination Classroom by TenraiTsukiyomi reviews
The Foundation arrives to Kunugigaoka too late to stop the birth of the Ultimate Assassination Classroom. (First half is serious, extra is half crack.)
Crossover - Dangan Ronpa Kibou no Gakuen to Zetsubou no Koukousei & Assassination Classroom/暗殺教室 - Rated: T - English - Family/Humor - Chapters: 1 - Words: 1,653 - Reviews: 2 - Favs: 26 - Follows: 14 - Published: 12/16/2018 - 3-E Students, Koro-sensei
An Assassin can't be a Mafia Boss by Filomene Hara reviews
After Class E completed their mission Tsuna returned to Namimori with bet friend Nagisa in tow. Only to have a hitman by the name of Reborn arrive with pans to train Tsuna to be a mafia boss. No thank you. Tsuna is perfectly happy as a part tie assassin and proud member of 3E combat/assassination squad. Unfortunately, Reborn doesn't take no for an answer.
Crossover - Katekyo Hitman Reborn! & Assassination Classroom/暗殺教室 - Rated: T - English - Chapters: 5 - Words: 13,416 - Reviews: 125 - Favs: 1,169 - Follows: 1,347 - Updated: 12/1/2018 - Published: 7/12/2015
Assassination Classroom and The Prisoner of Azkaban by EvilLydia reviews
With the prisoner of Azkaban escaped, the Ministry of Magic had to do something to protect the students. Not wanting to impede of the students education they hired children. After killing an unkillable monster, one man should be a piece of cake, right? AU where Kunugigaoka is a magic school and all the assassination classroom students are wizards or witches.
Crossover - Harry Potter & Assassination Classroom/暗殺教室 - Rated: K+ - English - Adventure/Supernatural - Chapters: 25 - Words: 84,809 - Reviews: 58 - Favs: 246 - Follows: 252 - Updated: 11/30/2018 - Published: 1/4/2017 - Complete
10 Seconds before Death by TheVeryCheesyAuthor reviews
Kagome Higurashi, an enigma, from Class 3A had dropped all the way to the End Class. Not because of her grades, but by choice. Her classmates are in for a surprise when they really discover who Kagome is.
Crossover - Inuyasha & Assassination Classroom/暗殺教室 - Rated: T - English - Romance/Mystery - Chapters: 6 - Words: 6,957 - Reviews: 38 - Favs: 123 - Follows: 142 - Updated: 11/18/2018 - Published: 1/17/2016 - Kagome H., Asano G., Karma A., Nagisa S.
1-B's Assassination Academia by pikagammerplus reviews
After Class 1-B's one week Hero internships, they comeback to U.A. and find that they have a brand new teacher. But unlike the other teachers at U.A. this bipedal octopus is a full fledged villain and if he isn't killed by class 1-B in 3 years he will destroy the world! Will class 1-B be able to rise to the task before they even can call themselves Proheroes?
Crossover - Assassination Classroom/暗殺教室 & My Hero Academia/僕のヒーローアカデミア - Rated: K+ - English - Friendship/Humor - Chapters: 3 - Words: 20,235 - Reviews: 13 - Favs: 50 - Follows: 66 - Updated: 11/17/2018 - Published: 10/18/2017 - Koro-sensei, Hitoshi S., Itsuka K., 1-B Students
Box of Truths by Titania of Fairies reviews
Their once was a time, when I was scared of the monsters under the bed. I began to run, farther and farther away from them, hoping to escape. The monsters chased after me and haunted me with their wild calls. I should have realized the truth. The monsters weren't under my bed, but inside of my head. And I soon understood. If the monsters wanted you, They would get you.
Crossover - Fairy Tail & Assassination Classroom/暗殺教室 - Rated: T - English - Mystery/Angst - Chapters: 3 - Words: 9,247 - Reviews: 2 - Favs: 6 - Follows: 5 - Published: 11/10/2018 - Erza S., Karma A., Nagisa S., Koro-sensei
Assassination Fairy by Silvia Amber reviews
Amyra Silverheart is one of the best 15-year-old mages in Fairy Tail. But her new mission may prove to be a bit more difficult than she had expected. How is she supposed to kill a teacher that can move at Mach 20 speed and keep her magic hidden from her classmates? It doesn't really help if her guild mates keep randomly showing up either...
Crossover - Fairy Tail & Assassination Classroom/暗殺教室 - Rated: T - English - Humor - Chapters: 10 - Words: 13,912 - Reviews: 46 - Favs: 94 - Follows: 102 - Updated: 11/7/2018 - Published: 3/28/2015 - [OC, Karma A.] Makarov D., Nagisa S.
The Blue Taijitu by Imaginationburstingout reviews
Beacon Academy, one of the most well known combat schools that existed around the world of Remnant capable of turning Huntsman and Huntresses in training into fully fledged Huntsman and Huntresses, apart from a Mistral champion, a well-known company's daughter and a certain young rose, there was another individual that caught the attention of the headmaster. A blue haired boy.
Crossover - Assassination Classroom/暗殺教室 & RWBY - Rated: T - English - Adventure - Chapters: 6 - Words: 12,089 - Reviews: 23 - Favs: 188 - Follows: 237 - Updated: 11/7/2018 - Published: 3/1/2018
Killua goes to school by Hades Coolest God Ever reviews
Killua leaves the Hunter island and goes to a place where nobody knows they exist, how will he deal with school and what is up with his teachers? Rated T because I'm paranoid Karma X Killua Pairing, just telling for people who don't like bxb pairings.
Crossover - Hunter X Hunter & Assassination Classroom/暗殺教室 - Rated: T - English - Humor/Adventure - Chapters: 14 - Words: 12,021 - Reviews: 73 - Favs: 197 - Follows: 230 - Updated: 11/6/2018 - Published: 3/4/2016
Comatose by FangirlsLeader reviews
After Luffy escaped Marineford, Ace's devil fruit slowly started healing his wound. Same as Luffy, he was in a coma for a long time. Once healed, he gets caught again. Luffy and his crew go to rescue him again, but at the end, Akainu goes for Ace once again, just like in the last is time, Luffy goes into a blind ter, the crew escape to a strange world. Called, Japan?
Crossover - One Piece & Assassination Classroom/暗殺教室 - Rated: K - English - Chapters: 2 - Words: 1,433 - Reviews: 4 - Favs: 19 - Follows: 18 - Updated: 10/27/2018 - Published: 10/20/2018
B R E A K ! by Efii reviews
With a mishap suddenly dropping Koro-sensei and Nagisa in a world of quirks, they have to play their cards right in order to stay anonymous and figure a way back home.. Easier said than done when there are literally Heroes and Villains after them left and right!
Crossover - Assassination Classroom/暗殺教室 & My Hero Academia/僕のヒーローアカデミア - Rated: T - English - Humor/Adventure - Chapters: 3 - Words: 10,273 - Reviews: 56 - Favs: 334 - Follows: 433 - Updated: 10/22/2018 - Published: 10/13/2018 - Nagisa S., Koro-sensei, Izuku M.
Cheering Up Time by MovieVillain
Remember Karma Saves Supergirl? Well, this is a sequel.
Crossover - Assassination Classroom/暗殺教室 & Supergirl - Rated: T - English - Humor/Hurt/Comfort - Chapters: 1 - Words: 983 - Favs: 6 - Follows: 4 - Published: 10/10/2018 - Karma A., Kara D./Supergirl, James O./Guardian, Winn S. - Complete
Korosensei Saves Supergirl Song by MovieVillain
Remember that fanfiction? This story took place after chapter 1 and before chapter 2.
Crossover - Assassination Classroom/暗殺教室 & Supergirl - Rated: T - English - Poetry/Humor - Chapters: 1 - Words: 388 - Published: 10/9/2018 - Koro-sensei, Kara D./Supergirl, James O./Guardian, Winn S. - Complete
The E in Jealous by thatoneourankid reviews
It's now 3 years after 3-E everyone had moved on and was doing there own thing. But Karasuma wants Haruhi,Nagisa and Karma to carry out a job that would hurt people around her, she knows this but doesn't care because she's an assassin,no feelings allowed
Crossover - Assassination Classroom/暗殺教室 & Ouran High School Host Club - Rated: T - English - Hurt/Comfort/Romance - Chapters: 2 - Words: 550 - Reviews: 3 - Favs: 20 - Follows: 27 - Updated: 10/8/2018 - Published: 9/19/2018 - Haruhi F., Satoshi M., Nagisa S., 3-E Students
New Game by Aialize reviews
There was a new hot target in town: a yellow octopus that could reach Mach 20. Of course, being the strongest Famiglia, Vongola got wind of this and decides to send one of theirs. But one Famiglia sent theirs as well. It's Vongola against Shimon for the 10 billion yen. But they better not forget about other assassins and hitmen, as well as class 3-E. Gen.
Crossover - Katekyo Hitman Reborn! & Assassination Classroom/暗殺教室 - Rated: T - English - Friendship/Adventure - Chapters: 2 - Words: 4,533 - Reviews: 22 - Favs: 104 - Follows: 148 - Updated: 10/8/2018 - Published: 9/25/2018 - T. Yamamoto, Enma K., Nagisa S.
Karma Saves Supergirl by MovieVillain
It's what the title said, and it took place in Supergirl season 1, episode 16 known as Falling.
Crossover - Assassination Classroom/暗殺教室 & Supergirl - Rated: T - English - Hurt/Comfort - Chapters: 2 - Words: 1,398 - Favs: 9 - Follows: 7 - Published: 10/7/2018 - Karma A., Kara D./Supergirl, Alex D. - Complete
Korosensei Saves Supergirl by MovieVillain reviews
If you saw season 1, episode 16 of Supergirl where she turns bad from red kryptonite infection, imagine if Korosensei would get involved in this mess to save her.
Crossover - Assassination Classroom/暗殺教室 & Supergirl - Rated: T - English - Sci-Fi/Humor - Chapters: 2 - Words: 1,271 - Reviews: 1 - Favs: 3 - Follows: 3 - Published: 9/22/2018 - Koro-sensei, Kara D./Supergirl, Alex D. - Complete
The Sniper's Game by MirtisHalal reviews
Creds to RedOmega for the idea and story. Chiba was the best shot in E-Class, and the government has another task (besides assassinating the yellow octopus) for him. And so, he finds himself in GGO, with a digital friend and a mystery to solve. Set after the Island Arc (Assassination Classroom) and during SAO II.
Crossover - Sword Art Online/ソードアート・オンライン & Assassination Classroom/暗殺教室 - Rated: K+ - English - Adventure/Mystery - Chapters: 13 - Words: 10,920 - Reviews: 8 - Favs: 67 - Follows: 89 - Updated: 9/7/2018 - Published: 4/13/2017 - Sinon/Shino A., Chiba R.
Red Jewel by Biodegradable Spoon reviews
Sasori didn't know what to expect when he died, but this was just absurd. Getting reborn along with the task of saving a bipedal octopus nicknamed Koro-sensei was not what he wanted to do. Too bad he wasn't given a choice. Well, at least his chakra was still there. Barely. Rated T for Paranoia, Cross-posted on Wattpad under GetYourOwnYaoi, and a couple of references to other anime.
Crossover - Naruto & Assassination Classroom/暗殺教室 - Rated: T - English - Humor/Spiritual - Chapters: 1 - Words: 1,254 - Reviews: 14 - Favs: 74 - Follows: 102 - Published: 9/1/2018 - Sasori, Karma A., 3-E Students, Koro-sensei
The Suffering I Caused by CrazyAssFangirl reviews
Izuku lives in the USA, and has a ridiculously dangerous quirk. After causing and experiencing suffering, he runs away with Nagisa, and along the way, they meet an orphan girl, a disowned boy, and three guys who don't know who they are. But, the guilt for something in Izuku's past still haunts him. Will he break because of it, or will he become stronger? Only time will tell.
Crossover - Assassination Classroom/暗殺教室 & My Hero Academia/僕のヒーローアカデミア - Rated: K+ - English - Chapters: 1 - Words: 4,833 - Reviews: 2 - Favs: 16 - Follows: 16 - Published: 8/26/2018 - Complete
Annie vs Koro Sensei by BobTheT-rex reviews
Annie Fell and was trapped in a form of Cryosleep for thousands of years, and when she finally wakes up the Fricking moon has exploded, brought to Japan by the German government she is giving a new goal. Kill Koro Sensei and save the world. Why has the world gotten so damn complicated!
Crossover - Attack on Titan/進撃の巨人 & Assassination Classroom/暗殺教室 - Rated: T - English - Chapters: 1 - Words: 646 - Reviews: 6 - Favs: 9 - Follows: 10 - Published: 8/15/2018 - Annie L. - Complete
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