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Manga / Koro-Sensei Quest!

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Koro-Sensei Quest! (Koro-Sensei Q! in Japan) is an ongoing, non-canonical Spin-Off of Assassination Classroom.

Imagine the original Assassination Classroom plot in an RPG Mechanics 'Verse, heavily inspired by the Dragon Quest video game series.

The manga is authored by Kizuku Watanabe and Jou Aoto, and is being serialized in Saikyou Jump.

It received an anime film adaptation (also animated by Lerche) as a companion for the Assassination Classroom: 365 Days compilation film, which premiered in Japan on November 19, 2016. Shortly after, an anime web series sequel was announced, consisting of 12 10-minute episodes. Crunchyroll is streaming the series, while Funimation is providing an English Dub on their website.

Due to some things differing from the original source, any character tropes applied in Koro-Sensei Quest! should be pointed here instead of the original series' character sheets.


This series features examples of:

  • Adaptation Species Change: Koro-sensei, instead of being an artificial monster (who was originally a human), is now a demon.
  • Adaptational Sexuality: Yada goes from having a crush on Kataoka to willingly engaging with the guys on Valentine's day, though it's implied she's just being nice, but also seems distraught when Takebayashi resists her charms.
  • Animals Hate Him: When the class ask Koro-sensei if their various quirks are caused by glitches, Karasuma asks if that was the reason why dogs bark like crazy around him. Koro-sensei replies that he isn't even in Class 3-E.
  • Art Shift: Aside from the show itself being more chibi, this happens quite a bit. For instance, Nagisa's transformation due to his bug turns him into a super-buff, tall and detailed dude almost outta Jojo. Fanservicey scenes such as the skits of Irina being whipped in her underwear by her child Kunudon, a picture of a Succubus in episode 2 and Irina's introduction as a Hot Witch have the show return to the original animation.
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  • Attractive Bent-Gender: Crossdressing variant. When the rescue party finds Nagisa all dressed up as a girl in episode 9, they almost unanimously agree that Nagisa looks really cute.
  • Berserk Button: Koro-sensei bans the students from attacking him with a toilet plunger that has a turd stuck to the end of it.
    • Do not call Ritsu's magic, what she is currently doing.
  • Big Bad: A more complicated case:
    • Played with by Koro-Sensei mostly being called Big Bad in most of the subs while he is only called the Big Bad Demon King.
    • Gakuhou Asano acts more like a typical Big Bad that Karasuma questions on who is the actual Big Bad in the sub version.
    • Played a lot straight with Shiro, who fits the role a lot more given he is the Big Bad of the original series.
  • Blob Monster: Fitting for the RPG Mechanics 'Verse nature of this series, such monsters exist. However, they got unusually strong by Level Grinding off Class 3-E. We also see super fast Mach Slimes that can dodge anything, though Koro-sensei is so fast he embarrasses most of them into retiring.
  • Book and Switch: Koro-sensei is caught reading a Grimoire with a porno mag hidden inside it.
  • Breaking the Fourth Wall:
    • When Karma joins Class 3-E, there was a dialogue box that says "Karma joins the party!". He asks why are they putting the message in the dialogue box, while looking at it.
    • Fuwa gives more jabs in Koro-Q! than she ever did in the main series. For example, during episode 6, when Koro-sensei calls Shiro by his real name, she calls out for "spoilers"; she then later states that the gardening segment from the same episode was for Isogai.
  • Cast from Hit Points: Ritsu's magic consumes a lot of HP Sso she replenishes it eating a lot.
  • Chekhov's Gag: Sugino's Funny Background Event as he tries to cast some magic in Episode 3 comes back in Episode 12, when it turns out that his bug is that his magic is delayed - so all the magic he did back then happens now.
  • Contractual Boss Immunity: Koro-sensei being the Demon King, the Final Boss as it were, status ailments like Irina's Charm spell don't do crap against him.
  • Color Failure: The entire Big Five squad has this happen to them. They try to use a crystal to reveal/weaken the Big Bad Koro Sensei. He dodges.
  • Crossover: Neuro and Yako from Majin Tantei Nougami Neuro appear in episode 11, the latter appearing in the eyecatch and after the end credits.
  • Cursed with Awesome: The keys to their success lie in the students' Good Bad Bugs.
  • A Day in the Limelight: Takebayashi (who got his story cut out in the main series's anime adaptation) gets his time to shine in episode 10 of this Spin-Off.
  • Demon Lords and Archdevils: Koro-sensei is now a Demon King.
  • Denser and Wackier: Take the original story, put it in an RPG setting, remove most of the seriousness and crank the silliness and cuteness Up to Eleven and you get Koro-Q!.
  • Diegetic Soundtrack Usage: Takebayashi sang the second ending of the second season of Assassination Classroom, "Mata Kimi Ni Aeru Hi", at the end of episode 10. What's more, the English dub actually had him sing it in English, when the dub of Assassination Classroom never had any of the themes adapted.
  • Dungeon Crawling: One of Koro-sensei's previous crimes is speeding through a dungeon and collecting all the treasure just as adventurers are going in to explore.
  • Evolving Credits:
    • The opening of each episode features images of that same episode woven in. The ending likewise incorporates a preview of the next episode.
    • The opening as of episode 7, and the ending as of episode 8 added Ritsu and Itona, and Irina changed her look.
  • Fire Balls: A standard magical method of attack. Okuda's usually end up hitting her teammates.
  • "Freaky Friday" Flip: Happens in episode 8 to class 3-E, when they switch bodies, minds, and their bugs went along with them. For some reason Isogai's bug still works on his body. They manage to switch back by the end of the episode, but Koro-sensei and one of the slimes switched.
  • Good Bad Bugs: In-Universe. Everyone in 3-E has a glitch (called "bugs" in the English dub), but Koro-Sensei tries to show them the advantages of their glitches, as a way to defeat him.
    • Nagisa's bug causes random effects when he summons his will to act. The first time it happens, it gives him 99999 strength. The next causes Kaede to turn into a green clone of Koro-sensei. The last one sends the entire class and Koro-sensei back to episode 1 as a New Game+.
    • Karma's bug drops his luck to negative values whenever he makes a smart-ass remark. This usually materializes in him getting hit by a washtub, and if there's a trap nearby the washtub will trigger it. He uses it to defeat Grip by overloading it, sending himself and him flying away.
    • Isogai's bug makes the back of whatever armor and clothes he's wearing vanish.
    • Sugino's bug causes all the magic he casts to trigger a long time after it should. Like, several spells cast in Episode 3 happen in Episode 12.
    • Chiba and Hayami share a bug: their shots will always hit the target right between the legs. They use this to defeat Gastro and Takaoka by shooting them from the school.
    • Okuda's bug causes all of her spells to deflect.
    • Kurahashi's bug makes it so she can only summon insects when doing magic.
  • Groin Attack: Chiba's and Hayami's bugs make shots hit the target right between the legs. Though Chiba's is all of his long-range shots and Hayami's is that no matter where she aims.
  • Hot Witch: Irina is re-tooled into one. Also doubles as a literal play on "Witch with a Capital "B"", alluding to her Embarrassing Nickname from the original series, "Bitch-sensei".
  • Hypocritical Humor: When Asano enters in the classroom with his horse, he went through the window, and Itona asks if Asano ever heard of a door. When he himself, had entered the classroom through the wall, twice. Lampshaded by Maehara.
  • Inept Mage: Instead of being the "inept students" from Kunugigaoka Middle School, Class 3-E is now a group of inept magical users from Kunugigaoka Magic School who are isolated due to their bugs.
  • Late-Arrival Spoiler: The anime assumes that you may have already either watched or read the original series by the time you are watching this Spin-Off.
    • When Shiro is introduced, Koro-sensei calls him "Yanagisawa", which gets lampshaded by Fuwa. The penultimate episode also plays with it, as those two are doing a Manzai duo stand-up routine.
    • In the final episode, Kaede calls Aguri her sister.
  • Leaked Experience: Defied by Ritsu in her introductory episode; after she defeats a bunch of monsters, she temporarily petrifies the rest of the class so they can't get any EXP and she hogs it all for herself.
  • Level Grinding:
    • Inverted as Class 3-E are so useless that slimes farm them for experience points.
    • Played straight in the anime's final episode with the real Terasaka, who is level 99 by the time he's caught up to everyone else.
  • Lighter and Softer: This series is a lot cuter and less serious than the main series.
  • Magitek: Instead of being a computer, Ritsu in this setting is a tablet infused with all the magic expertise in history, capable of combining it in unique ways to harm Koro-sensei. She was enchanted with sentience to keep her from being used for evil.
  • Mythology Gag:
    • The ending theme is an 8-bit version of "Seishun Satsubatsuron", the first opening theme of the original series.
    • After Karma manages to get a hit on Koro-sensei, a scene similar to how he meets Koro-sensei for the first time, Koro-sensei punches a wall, when he gets upset, but did no damage to said wall.
    • After Karasuma's lesson with the students, the students started complimenting him, Koro-sensei gets jealous when he thinks that Karasuma is stealing his popularity with the students.
    • Takebayashi's first line is also about his liking 2-D girls, followed by someone asking him if he wants that to be his first line.
    • Itona is introduced by crashing through the classroom's back wall and stating he's stronger than the wall.
    • In the original series, Koro-sensei named himself "Prince of the Fateful Eternal Wind" when he was assigning nicknames for the rest of Class 3-E. In Koro-Q!, "Prince of the Fateful Eternal Wind" is his human's pseudonym, while "Reaper" is his job class.
    • In the final episode's confrontation, Koro-sensei sings "Tabidachi no Uta" (which is played as an insert song during his death scene in the main series).
  • New Game+: Nagisa's bug accidentally invokes this when the main cast is in danger of being killed by a Collapsing Lair.
  • No Fourth Wall: Everyone is aware of being a fictional character and comments on the nature of the series.
  • The Nudifier: Isogai's glitch means that only the front half of his clothes/armour will appear on him.
  • Personality Powers: Okuda is such a Shrinking Violet, her bug has her spells deflect; in one instance even a basic fire magic demonstration ends up accidentally burning Terasaka, Muramatsu and Yoshida.
  • Random Effect Spell: Nagisa's glitch gives a random effect whenever he steps forward with a strong will. Luckily the first time we see him use it, it puts his strength up to 99999 and gives him a muscular body.
  • RPG Mechanics 'Verse: Video game rules apply. Even pixelated text boxes appear that explain what's happening.
  • Running Gag:
    • Every time Hana appears, she's eating something.
    • Anytime that Karma comes up with a smart-ass remark or quips, Karma's luck drops so low that a random object keeps hitting him, namely a wash bin.
    • "It's Sorcery!!" note 
    • Anytime that Nagisa ends up getting dressed up in drag.
    • Fuwa keeps Breaking the Fourth Wall due to her bug in most episodes while Nagisa acts as the straight man.
    • The Impostor Terasaka stayed with the class from his initial introduction until the real came back... in the final episode.
  • Shout-Out:
    • The very first time that the watcher sees Nagisa's random bug in action, his figure resembles Kenshiro from Fist of the North Star.
    • When Koro-sensei says he want to fight someone on his level, he dresses up as Goku in the manga and anime, while his clones dresses up as Krillin in anime only.
    • Due to it being heavily influenced by the Dragon Quest series, there's a lot of references here and there that are very obvious, such as the use of monsters (which are more directly referenced in the manga, instead of using Kurudons like the anime does), and the reason of why Koro-sensei became the Demon King, as he simply switched jobs at the Temple of Trades, an expy of All-trades Abbey.
    • While improving the traps in Karma's Cave, Koro-sensei painted the Straw Hats' Jolly Roger on the axe to make it look more dangerous.
    • One of the anime's recurring segments is Ace Sorceress, an obvious play on the Ace Attorney series. The segments' logo is even strikingly similar to the style of the games'.
    • Part of the ending theme's visuals is a short parody of Taiko no Tatsujin, as a nod to Bandai Namco Entertainment, who made a couple of games based on the main series for the Nintendo 3 DS.
    • When the real Terasaka returns, he looks a lot like Guts.
  • Skewed Priorities: When Takaoka kidnaps Nagisa in order to force Class E to give up Koro-sensei, Kaede is more concerned about how they also took the pudding Nagisa was carrying.
  • Spared by the Adaptation: Aguri's death is one the main catalysts of the main series, but in this one, she's fine and dandy.
  • Spiteful Spit: The slimes do this to Class 3-E after they beat them.
  • Stealth Pun: Possibly unintentional, but Koro-sensei sings Tabidachi no Uta while going at mach speed in the final episode. A Chorus-sensei.
  • True Love's Kiss: Due to Kayano's pudding being laced by poison courtesy of Takaoka, she's put into a deep sleep from which only a princess's kiss can wake her. Naturally, Nagisa is chosen to deliver the kiss, and it works... but it also turns Kayano into a green clone of Koro-sensei because of Nagisa's bug.
  • Victory Is Boring: In this continuity, Koro-sensei used to be a hero until he reached his max level, and so decided to become a Demon King to spice up his career. Too bad for him, he was so strong that even that position didn't give him much excitement until he decided to train warriors to become strong enough to beat him.
  • Wizarding School: Kunugigaoka Magic School also teaches other fantasy skills like sword fighting and how to befriend monsters.

Alternative Title(s): Koro Sensei Q, Koro Sensei Quest