Assassination Classroom Wiki

I never know the right way to phrase things or how to express my feelings as a person. But I'm okay with that because equations and formulas always have a right answer. They're free of fussy word games and complicated emotions.

— Okuda describing her weak literature skills

Manami Okuda (奥田 愛美 Okuda Manami) is a student in Class 3-E of Kunugigaoka Junior High School taught by Korosensei.


Manami is a cute girl with black hair (sometimes with a purplish tint) that is styled into low twin braids that reach just below her shoulder, brown eyes (dark-purple eyes in the anime), she wears round-shaped glasses and she has a more petite frame than most of the girls in Class 3-E.

Seven years after graduating Class 3-E, her hair is styled into a single braid that rests over her left shoulder instead of her usual twin braids.


Okuda is a somewhat awkward, timid, shy and rather introverted girl who had poor language skills, which caused her to be quite incredibly straightforward.

Despite her introversion, Okuda is a sweet and very determined girl who hopes to be useful to her friends and classmates. After meeting Korosensei, Okuda has turned into a much more sensible individual who can express herself more.


First Semester[]

Toxin Time[]

Manami was one of the first characters to be formally introduced where she was properly introduced in Chapter 7 when she flat-out asked Korosensei to drink her poisons.

  • The first poison was revealed to be sodium hydroxide, which caused Korosensei to grow horns.
  • The second one was thallium acetate which caused wings to grow at the back of his head.
  • The third one was aqua regia which turned him back to normal, but instead of his usual smile, he had a poker face that resembled an emoticon.

Korosensei told Okuda that as a teacher he could not overlook the safety hazards of a student creating her own poisons, but then adds that if she has time after school they would make a poison that would kill him together, which she excitedly agreed to.

While the two were creating poisons after school, Korosensei notes that Okuda's grades in science are excellent to which she responds that it is the only subject she was good at, putting emphasis on Japanese being her weakest. She states that she can't find the right words to express how she feels and that she never knows what are the right answers, as opposed to science and math where there is only one right answer and that to her, beautiful words and clever thinking with emotions are unnecessary. After that, Korosensei gives her a worksheet for homework. The next day, Okuda has her poison ready and is ready to give it to Korosensei. She gives it to him and after he drinks it, he thanks her for the "medicine" that'll allow him to evolve. He later reveals that he had her make a medicine would turn him into a liquified state and while he proceeds to fly throughout the classroom, the other students start shooting at him. When he finally settles into a corner on the ceiling he tells Okuda to continue working on her language skills, explaining that no matter how good at chemistry she may be, without the necessary language skills, that skill would prove to be futile.

School Trip Time[]

After the mid-term exams, Class 3-E went on a school trip to Kyoto with the purpose of killing Korosensei. Okuda was grouped up with Nagisa Shiota, Kaede Kayano, Karma Akabane, Tomohito Sugino and Yukiko Kanzaki. While scouting the old neighborhood for assassination spots, the group was ambushed by delinquents from another school in a dark alley. The boys were overpowered and knocked unconscious while Kayano and Kanzaki were kidnapped simultaneously. Okuda managed to hide herself until the delinquents left the area and the boys began waking up. Okuda would later help the boys find the missing girls and continued to assist them and Korosensei, who later arrived to the rescue by knocking out the delinquents with the brick-sized guidebooks their teacher gave them. That night, Okuda looks on in astonishment seeing Kanzaki expertly playing an arcade game.

End of Term Time[]

Okuda returns to the spotlight during the end of semester exams. Joining Nagisa Shiota, Kaede Kayano, Yuma Isogai, Rio Nakamura and Yukiko Kanzaki in a study session in the main campus library, they were confronted by the Five Virtuosos of Class A. Okuda stood up for her class to the top science student Natsuhiko Koyama and bore witness to the wager the Five offered to Class 3-E. During the science exam itself, Okuda finally realizes what Korosensei meant about incorporating literature into solving complex formulas. She would later come first in the subject in the entire grade, beating out Koyama and even the overall top scorer Gakushu Asano. Along with six others, she earned the right to shoot off one of Korosensei's tentacles in the class's upcoming assassination.

Assassination Island Arc[]

Having ranked first in Science, Okuda was one of seven students to shoot off one of Korosensei's tentacles. In preparation for the assassination at Okinawa, she helped out distracting their target while the other students scouted the area. When the time came, she shot off a tentacle and joined in the effort to pin Korosensei down. However the class's plan failed when their teacher turned himself invincible but at the cost of his mobility. Later that night, ten of the students collapsed from an unknown virus. Okuda stayed behind with Kotaro Takebayashi in treating the ill while those left standing infiltrated the mountain top hotel. While caring for the poisoned students, Okuda discussed whether the virus was contagious, although Takebayashi believed it was a targeted attack. The healthy students later returned with some antibiotics to cure their sick classmates.

Prior to leaving the island, Korosensei set up the Assassination Test of Courage, a supposedly scary attraction but it was really a way to spark romance among the students. Okuda was paired with Karma Akabane, who admitted to her that he was envious of Nagisa Shiota's talents for assassination.

Second Semester[]

Okuda remained in the background for much of the second semester. During the God of Death arc, she prepared a smoke bomb to cover the class's initial escape from the master assassin and was assigned to the recon team. However, she and the rest of the class were captured by the assassin soon after before eventually being rescued by Tadaomi Karasuma and Korosensei. During careers consultation, she prepared another poison for Korosensei to drink, although this had been tampered with by Karma Akabane and Rio Nakamura, with comedic results.

In the finals, she was ranked highly in the top 50, beating her Science rival Natsuhiko Koyama once again. At the end of the semester, Okuda and the rest of the class witnessed Kaede Kayano revealing her true identity in her assassination attempt, and later the near-suicidal battle between her and Korosensei. Everyone later heard Korosensei's backstory as the original God of Death and how he became their teacher. Okuda was among the group who later visited the recuperating Kayano in hospital prior to the start of the final semester.

Final Semester[]

Schism Time: Class 3-E Civil War[]

When term resumed, the class was still unsure of their next move after hearing Korosensei's history. The class eventually became divided over whether to continue killing their teacher or follow Nagisa Shiota's proposal to find a way to save him. Korosensei mediated the situation by having the two sides fight each other in a team death match style paintball war. Okuda sided with Nagisa's team and used a special pair of lenses she developed to spot the hidden Koki Mimura, who was spying on their formations. When most of the surviving save team members launched a frontal assault to eliminate Rinka Hayami, Okuda was the first to be shot down and eliminated from the war. With the final outcome to be decided between Nagisa and Karma Akabane in melee combat, Okuda shouted out that she wanted Karma to win despite being on opposing sides, stating that she understood Karma's reasons through his fighting style. Nagisa eventually won the war with Karma's surrender.

Research Project - A Time for Resolve[]

When the class obtained American research data from the International Space Station, Okuda was able to decipher the jargon and translated the necessary information for the class to hear. She discovered that the chances of the antimatter exploding in lifeforms decreases according to the life form's biological size - in Korosensei's case, the chances of him self-destructing is less than 1%. A chemical had been developed to further neutralise the threat, which Okuda found to be similar to the poison she made in the first semester; specifically the one which turned Korosensei into a liquid state. Although knowing of a solution to save their teacher, the class resolved to continue killing Korosensei at least until their graduation in March.


Seven years later, Okuda was working along with Kotaro Takebayashi as a scientist at a research lab/institution. Their research on artificial blood based on the recipes provided by Korosensei in their guidance books have impressed their supervisor to set themselves up for the future.


Science: Okuda has been gifted with intelligence in this subject, and after learning to incorporate literature she has become even better at it. This has proven useful as Okuda could decipher the complex technical jargon and translate it for the rest of the class to understand.

  • Poison Making/Chemistry: Despite the fact she stated that she wasn't really good with surprise attacks and expressing things in language, Okuda excels in chemistry and mathematics, being very capable of making even the most deadliest of poisons for assassinations and potions for various situations such as a homemade smoke screen.

Kissing Techniques: According to Irina Jelavić, Okuda is the 5th best kisser from Class 3-E.[1]


Karma Akabane[]

Main article: Karma Akabane

Karma and Okuda get along quite well where Karma has stated that he is interested in Okuda for her scientific prowess, citing it as a way to increase the scope of his pranks. Okuda thinks of him as a good friend, even describing him in the anime that he "wasn't all that scary" during the field trip. According to the official character book, both consider one another to be the easiest person to talk to of the opposite gender and Karma is able to confide in her during the Test of Courage. In the canon timeskip novel, Korotan D, Karma was really annoyed at a superstar named Jerome March for flirting with Okuda. Later, he escorted her from Jerome and guarded her. It seems that she and Nagisa Shiota are Karma's closest friends from Class 3-E, even after the timeskip, shown in Assasination Classroom graduation time extra materials by Yūsei Matsui.

Kotaro Takebayashi[]

Main article: Kotaro Takebayashi

Okuda greatly respects Takebayashi's medical knowledge, having worked alongside him in taking care of their infected classmates on Fukuma Island. Despite knowing that he is an otaku, she is one of the few girls who has not estranged him.

Seven years later, they are shown to be working together and their research on artificial blood according to the hints provided in their guidebooks by Korosensei impresses their supervisor.

Kaede Kayano[]

Main article: Kaede Kayano

Okuda and Kayano are good friends as they are seen together at several points of the series.

According to the official character booklet, Kayano is one of her closest friends.

Yukiko Kanzaki[]

Main article: Yukiko Kanzaki

A friend she made on the Field Trip. Because they both have a quiet and adult-like personality, they still use honorifics towards one another.

Nagisa Shiota[]

Main article: Nagisa Shiota

On her character profile in a tankobon extra, it was stated that Nagisa was one of the friends Okuda recently made.


  • (To Korosensei) "I never know the right way to phrase things or how to express my feelings as a person. But I'm okay with that because equations and formulas always have a right answer. They're free of fussy word games and complicated emotions."
  • (Wanting to save Korosensei) "The power of science is infinite! It can be used to destroy, so surely it can be used to save!"
  • (To Natsuhiko Koyama) "W-We can too! We're aiming for the top scores in every subject at finals! Let's see you try to boss us around then!"


  • The name Manami means "love, affection" (愛) (mana) and "beautiful" (美) (mi). 
  • Manami's surname Okuda means "back, inner part, heart, interior" (奥) (oku) and "field, rice paddy" (田) (ta/da). 


  • Okuda's favorite subject is Science while her least favorite was Literature.
  • Okuda's past club before joining Class 3-E was Science Club.
  • Okuda wants to be a researcher in the future.
  • Okuda's special skill is that she can draw chemical formulas with a single brush stroke.
  • Okuda's most treasured item is a small pipette.
  • Okuda's favorite food is Honeycomb toffee.
  • Okuda reads pharmaceutical encyclopedias and organic compound dictionaries instead of picture books.
  • Okuda's Bug in Koro-Sensei Q! is she can create potions that shouldn't exist.
  • In the tankobon extras, Okuda's statistics were listed as:
    • Physical strength: 1
    • Mobility: 1.5
    • Close-range assassination: 1
    • Long-range assassination: 3
    • Academic ability: 4
    • Characteristic skill: 5 (Chemistry)
  • According to Irina Jelavić:
    • In the Kissing Techniques Scores, Okuda is ranked 5th.[1]
  • Okuda's school rankings are:
    • First Term Midterms: 94th, 330 points
    • First Term Finals: 20th, 441 points
    • Second Term Midterms: 29th, 422 points
    • Second Term Finals: 20th, 377 points
  • According to Okuda's character profile, she had no friends before joining Class 3-E.


  1. Assassination Classroom Manga; Volume 15, Chapter 132


e - d - vKunugigaoka Junior High School
Class 3-E
Faculty KorosenseiTadaomi KarasumaIrina JelavićAguri Yukimura
Students Masayoshi KimuraHinano KurahashiYuma IsogaiHinata OkanoHiroto MaeharaMeg KataokaKotaro TakebayashiToka YadaKoki MimuraRio NakamuraNagisa ShiotaKaede KayanoTaisei YoshidaYukiko KanzakiTaiga OkajimaRinka HayamiTomohito SuginoYuzuki FuwaTakuya MuramatsuKirara HazamaRyunosuke ChibaManami OkudaSosuke SugayaSumire HaraRyōma TerasakaKarma AkabaneItona HoribeRitsu
Main School
Faculty Gakuho AsanoKiyoshi Terai
Students Tomoya SeoTeppei ArakiNatsuhiko KoyamaRen SakakibaraGakushu AsanoKaho TsuchiyaKazutaka ShindōKokona TagawaNobuta TanakaChousuke Takada