Shout Out / Assassination Classroom

Manga

• Chapter 7: When drinking Okuda's poisons, two of the forms Koro-sensei takes resemble Sonic the Hedgehog and a Liquid Metal Slime.
• Chapter 8: When poison forces Koro-sensei's expression into a temporary poker face, he replies, "Even if you hate me, please don't come to hate assassinations", which is a reference to a famous quote made by AKB48 member Maeda Atsuko. In the Viz localization, the line becomes, "Don't hate me because I'm beautiful", based off the 80's Pantene shampoo commercial.
• Chapter 10:
  • Irina's tablet has a list of her personal contacts. One of them looks like Doraemon.
  • When Irina starts teaching the kids how to speak in foreign languages, basing her lessons around her experience in seducing foreigners, Nakamura pictures Jack Sparrow and Okajima pictures Lara Croft.
• Chapter 12: When wearing a headband for each student showing their weak subjects, Koro-sensei wears a Naruto headband for Terasaka. The headband makes a comeback before the final exams, but this time many of his "shadow clones" wear it. He even says "Dattebayo"/"Believe it!" In the anime.
• Chapter 13: Two of his "clones" can be seen wearing a Mickey Mouse and a Doraemon hat.
• Chapter 16: Ryuuji's face as the "ruination sensei" is a blatant shoutout to the Botched Ecce Homo Painting◊.
• Chapter 18:
  • A double whammy in the same scene. The samurai actor, like Rurouni Kenshin, wears an X shaped scar and claims to abstain from meaningless bloodshed. Then, the way he carries the girl away in his arms parallels the Sato Takeru and Maeda Atsuko incident.
  • When Red Eye is reminiscing about past missions, one of his victims is Elmo. Mario's hat appears in the same panel.
• Chapter 19: The boss of the bullet hell game on the first page is very similar to DoDonPachi's infamous Hibachi; the player ship even has a very similar laser shot on.
• Chapter 25: Irina makes Class E watch Sex and the City for English lessons.
• Chapter 27: When Irina's master is talking about understanding differences in power, the character chosen to represent this concept in silhouette is a slightly altered but still clearly recognizable Mewtwo.
• Chapter 28:
  • Itona's "handler" Shiro wears an anti-Sensei fabric outfit with an upside-down version of Dr. Manhattan's hydrogen symbol.
  • The back of Koro-sensei's magazine features a man with a camera for a head; this is a real Japanese anti-piracy mascot, commonly nicknamed Movie Thief (Eiga Dorobo).
• Chapter 29: When musing over the fact that he has a brother, Koro-sensei briefly envisions the two of them as Sazae Fuguta and Katsuo Isono from Sazae-san, the Donoue brothers from the Chuunichi Dragons (a Japanese baseball team), and Raditz and Goku from Dragon Ball.
• Chapter 30: Shiro is seen reading a volume of The Disastrous Life of Saiki K.. Both series have a crossover chapter in Shonen Jump.
• Chapter 37: When Koro-sensei's face melts off, the art shift suggests that it's very likely a reference to Junji Ito's Glyceride.
• Chapter 38: Someone draws the face of a blue slime from Dragon Quest on one of Irina's boobs.
• Chapter 41: While Takaoka reasons that Nagisa will be too afraid of the consequences to attack him with the combat knife, a knife-thrower from Kung Fu Master is seen being too afraid to use the same lethal combat knife against the game's protagonist.
• Chapter 44: Kataoka meets Kokona at a restaurant named Cyberia. The restaurant's logo is even modeled after Zak's face.
• Chapter 47: A rather dopey-looking Tom Nook makes a cameo in a panel depicting Shiro's newest plan to take down Koro-sensei.
• Chapter 53:
  • Two of the questions on the English Final are taken straight from The Catcher in the Rye. The correct answer even has to be written down in Holden's unique style of speech.
  • The Science portion of the final exam is depicted as a humanoid giant wearing sturdy armor. When Okuda "defeats" it (solves it perfectly), it happily strips off its armor and awkwardly runs off into the distance, not unlike the Titans from Attack on Titan.
• Chapter 58: Koro-sensei claims to be cosplaying Jiro Horikoshi while riding on a hang glider. May be a reference to The Wind Rises, which premiered a few months before this chapter came out.
• Chapter 60: Warsman's broken bear claw represents the students's dejection after failing to assassinate Koro-sensei with their most elaborate plan yet.
• Chapter 61: Ritsu cosplays as Ai from Cat's Eye as she hacks into the hotel's security network.
• Chapter 63:
  • The students reason that the virus plaguing the class was orally transmitted. Cue the disturbing imagery of a victim taking a bite out of Anpanman, a visual metaphor for the virus.
  • In the same chapter, Fuwa fantasizes herself facing off with Ryuk while holding the Death Note.
  • A short time later, after correctly deducing that Smog was the assassin who poisoned the entire class with the virus, Fuwa mimics Yako Katsuragi's Catchphrase by pointing at the culprit and dramatically declaring, "The culprit was you!" She then makes this not-so-subtle statement:
    Fuwa: Eh, Jump's mysteries? I dunno, but I hear their paperback edition is out, so maybe I should buy it.
    Nagisa: What's wrong with you?! You're making the plug too obvious, Fuwa-san!!
• Chapter 64: Grip keeps adding "-nu" to the end of his sentences to make himself sound cool. The volume extra at the end of the chapter reveals that it's a reference to Tokoro Tennosuke's obsession with the "-nu" (ぬ) symbol.
• Chapter 66: Yuuji states that his father is a famous TV chairman who constantly gets away with groping the asses of other ladies. The scene is an allusion to Mino Monta, who was caught doing this to a female colleague.
• Chapter 67: When forbidding his students from killing people with the real guns they got off the security guards, Koro-sensei wears a Rurouni Kenshin scar.
• Chapter 68: The protagonist of Dragon Quest desperately tries to defeat a group of Metal Slimes before they run away. Seen during Koro-sensei's monologue on the importance of "experience".
• Chapter 74: During the test of courage, Koro-sensei freaks out and mistakes Takebayashi for mangaka Shigeru Mizuki, who was famous for his GeGeGe no Kitarō series.
• Chapter 78:
  • Takebayashi recommends an anime titled, "Ore No Imouto Ga Totsuzen Hiroshima-Fan Ni Natta No Wa Kareshi No Eikyou Ni Chigai Nai Ken Ni Tsuite" ^note  Regarding The Incident Of How There's No Doubt That My Little Sister Became A Hiroshima Fan Due To Her Boyfriend's Influence, clearly poking fun at Oreimo as well as the general tendency of Japanese light novels' Lensman Arms Race of long titles and annoying kanji.
  • While singing a song about the unit circle, Koro-sensei's face looks like Takeshi Gouda's, a character from Doraemon infamous for his tone-deafness.
  • When Asano warns Takebayashi about a student being sent to Class E after breaking something in the principal's office, the student in question is drawn in the style of Nobuyuki Fukumoto, the author and artist of Kaiji, Strongest Legend Kurosawa, and Akagi among other series.
• Chapter 79: The Class E delinquents are depicted as the biker thugs from Fist of the North Star, complete with an appropriate Art Shift.
• Chapter 81: The sillhouettes of Lupin III and Zenigata can be seen as Koro-sensei excitedly challenges the class to a game of cops and robbers.
• Chapter 82:
  • The students play the cops and robbers game with Karasuma and Koro-sensei. As it describes Koro-sensei letting students constantly escape via bribes and him constantly slacking, it shows him dressed as Kankichi Ryotsu from Kochikame, Big Ol' Eyebrows included.
  • During one of the "prisonbreaks", Koro-sensei dresses up as Zenigata and blames it on Karasuma.
    Koro-sensei: Karasuma-san, can you hear me?!! Why are the culprits escaping from jail?!!
    Karasuma: That's my line, you damn monkey cop!!
• Chapter 83:
  • Fuwa points out that the bra thief is a Koro-sensei imposter and she imagines Fake Koro-sensei with seven scars on his chest like Jagi, who pretended to be his younger brother Kenshiro.
  • In the same chapter, Ritsu is cosplaying Sherlock Holmes. Does this again in chapter 86.
• Chapter 87: In an attempt to save his life, Hazama tries to make Itona read all 2,500 pages of The Count of Monte Cristo in order to motivate him to get revenge on Shiro. It doesn't work.
• Chapter 96: Terasaka's monster costume looks an awful lot like Neuro's demonic form.
• Chapter 98: Koro-sensei's copy of Shonen Jump gets blasted by Chiba.
  Koro-sensei: Now I can't read either of the 2 great parallel world arcs of Hunter and Toriko!!
• Chapter 102: Koro-sensei is hanging out in a restaurant in Brazil before a big soccer match. While coming up with potential test questions, he repeatedly mentions "7 to 1", pissing off the locals in the process. Koro-sensei is unaware that 7 to 1 was the result of the semi-final World Cup match between Germany and Brazil.
• Chapter 104: Shows Koro-sensei dressed up like Doraemon, as both have an immeasurable number of abilities hidden up their sleeves and pockets (respectively).
• Chapter 105: The government official in Karasuma's flashback is playing with a Yokai Watch Type Zero toy.
• Chapter 113: The first page briefly features a child trying to gun down a monster that resembles the infamous behelit from Berserk.
• Chapter 114: Koro-sensei cosplays as Old Man Rerere as he sweeps the street in front of Nagisa's apartment. He's an iconic character from a very old gag series called Tensai Bakabon.
• Chapter 115: The main building students believe that Class E will have no chance at competing with Class A's "super middle school level" shop.
• Chapter 116: Fuwa makes a sly shout out to fellow Shonen Jump manga Food Wars! when a customer reacts favorably to Class E's homemade food.
  Fuwa: We'd spend 8 pages describing that reaction, but that's another manga's forte.
• Chapter 117-118: During the annual School Festival, Class E manages to attract not only characters that had interacted with them before, but also celebrities such as Switch Girl, the Toguro Brothers, Kusuo Saiki, Kuroko Tetsuya and even Golgo 13!
• Chapter 123: Ranked 25 on the list of students that scored within the top 50 is Ami Mizuno.
• Chapter 127: Class E's play is a dark and hilariously twisted rendition of Momotarō.
• Chapter 135: King Kong and Godzilla doubt that antimatter will become a reliable fuel source.
• Chapter 150: The art and the scene depicting Koro-sensei's suggestion to hijack the ISS mirrors the scene where an angry mob watches a carnivorous planet approach the earth during the final hours of Remina.
• Chapter 162:
  • One of the photographs is of Fuwa doing the same pose as Luffy in his Gear Second pose, with smoke from a mosquito coil standing in for the steam, complete with a straw hat tied around Fuwa's neck.
  • Another photo, a theme photo of religion, has Koro-sensei playing the Flying Spaghetti Monster.

Anime Only

• Episode 0: Encounter Time (OVA): Koro-sensei quotes Friedrich Nietzsche's Untimely Meditations when confronting Karasuma about his request to teach Class 3-E of Kunugigaoka Jr. High. He's also seen reading a copy of Also sprach Zarathustra.
  Koro-sensei: "There exists in the world a single path along which no one can go except you: whither does it lead? Do not ask, go along it."
• Episode 1: In the dub, Koro-sensei mentions that regrowing body parts is a luxury the kids won't have if they accidentally shoot their eyes out from the BBs.
• Episode 3: Koro-sensei's reaction to Karma stealing what little money he has left is to a "The Scream" Parody.
• Episode 6: Koro-sensei's shoddy visual clones can be seen cosplaying several famous Shonen Jump characters: Goku from Dragon Ball, Ichigo from Bleach, the titular character of Toriko, Neuro and Yako from Majin Tantei Nougami Neuro, Ryotsu from Kochikame, and Takasugi from Gintama.
• Episode 9: Ritsu reminds Fuwa of a popular detective manga where an AI tries to take over the world with an electronic drug. This is the entire premise of the HAL arc from Majin Tantei Nougami Neuro, the author's previous series.
• Episode 10: During Irina's English lesson, there's a conversation between Samantha and Carrie written on the chalkboard.
• Episode 11:
  • When Itona reveals that he is Koro-sensei's younger brother, the entire class envisions the two of them as Goku and Raditz from Dragon Ball, Kenshiro and Raoh from Fist of the North Star, and Andromeda and Phoenix from Saint Seiya.
  • Shiro reads an issue of Shonen Jump that features Usopp in his Dressrosa outfit on the cover.
• Episode 18: Irina Jelavic's Super Secret Skill #3 — Wigs make for great disguises. She apparently owns one for Naruto, Yako, and Koro-sensei.
• Episode 19: After pointing out the culprit who poisoned her classmates, Fuwa gives us a full-out Majin Tantei Nougami Neuro plug when talking about detective series in Shonen Jump, complete with a giant portrait of Neuro and a large heap of lampshading.
• Episode 22:
  • Grip, Smog, and Gastro are seen playing a Nintendo 3DS game together.
  • The Stinger in the TV version is a drawing of Koro-sensei's "thumbs up" in molten metal, marking the break between the first and second seasons. Koro-sensei even says the T-800's signature Catchphrase, "I'll be back!"
• Episode 23 (Season 2, Episode 1): While trying to pair up Karasuma and Jelavic, the students and Korosensei react to one of their failures by imagining Karasuma as the Colossal Titan.
• Episode 28 (Season 2, Episode 6): When Korosensei is using his Mach speed to do a revision session with his students, Luffy's impression appears as a shadow in the multi images.
• Episode 32 (Season 2, Episode 10): Fuwa states that there was going to be a more impressive reaction when the man tries the food, but another cooking anime beat them to it.
• Episode 33 (Season 2, Episode 11): While taking the second exam finals there's a scene where a giant robot comes out of the dirt. Karma precedes to climb onto it and throw a grenade into a hole on the top of it, This is a reference to Starship Troopers where the same tactic is used to take out one of the "Tank Bugs" in the film.
• Episode 41 (Season 2, Episode 19): In the English dub, Koro-sensei announces Class 3-E's plan to go to outer space and visit the ISS by declaring, "Ground control to Major Tom, the ISS has been hijacked!"
• Episode 43 (Season 2, Episode 21): Koro-sensei launches himself into the air using two flag poles, stretching two of his arms out wide to to do so. As he does, Koro-sensei shouts "Gum-Gum Slingshot!". Made even funnier when you realise that Koro-sensei's English voice actor is Sonny Strait, who also plays a member of Luffy's crew.
  • In the Latin American Spanish dub of the same episode, they used the phrase "They tied me like a PIG!" (¡Me amarraron como PUERCO!), which came out from a Mexican show named "El Show de la Baradilla", and the phrase itself came out from a very memetic Real Life incident involving a drunk driver.

---