Manami Okuda

Manami Okuda is a student in Class 3-E of Kunugigaoka Junior High School, taught by Korosensei.

Appearance
Manami has black hair, styled into twin braids that reach just below her shoulder and brown eyes (lavender in the anime). She wears glasses and has a more petite frame than most of the girls in Class 3-E.

Personality
Okuda is a shy and rather introverted girl. She has poor language skills and is straightforward because of it. Despite her introversion, she's a sweet and determined girl who hopes to be useful to the class.

Toxin Time
Manami was one of the first characters to be formally introduced. 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 cannot overlook the safety hazards of a student creating her own poisons and then tells her that if she has time after school then they'll make a poison that'll kill him which she excitedly agrees to.

After school while the two are creating poisons, Korosensei notes that Okuda's grades in science are excellent to which she responds that it's the only thing she's good at, putting emphasis on Japanese being her weakest subject. She states that she can't find the right words to express how she feels and that she never knows what is 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 liquid 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 Manami that no matter how good at chemistry she may be, without the necessary language skills it'll all be futile and to continue working on her language skills.

School trip time
After the mid-term exams, Class 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 neighbourhood 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 assisted them and Korosensei who arrived to the rescue in 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, Kaede, Yuma Isogai, Rio Nakamura and 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 E. Okuda leapt out of the way when Nakamura pointed the sharp end of her pencil to Koyama's neck before their rivals left. During the science exam itself, Okuda finally realises what Korosensei meant about incorporating literature into solving complex formulae. 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 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, though 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, who admitted to her that he was envious of Nagisa's talents for assassination.

Abilities
Poison Making/Chemistry: Despite the fact that she states that she isn't really good with surprise attacks and expressing things in language, Okuda excels in chemistry and mathematics and is very capable of making even the most deadliest of poisons for various situations.

Science: Okuda has a talent with this subject and after learning to incorporate literature into it, she has become even better at it. She's also ranked first in the school for the subject.

Karma Akabane
Karma and Okuda are shown to get along quite well. Karma has openly admitted that he is attracted to her due to her mastery in poison making and Manami, though unaware of this, thinks of him as a good friend. The two were also paired together during Korosensei's Test of Courage. According to the official character booklet, Manami feels relaxed around Karma and in the anime she stated that he "wasn't all that scary."

Nagisa Shiota
On her character profile in the tankoban extra, it was stated that Nagisa was one of the friends she recently made.

Kaede Kayano
Okuda and Kayano are shown to get along very well and are often seen together. According to the official character booklet, Kayano is one of her closest friends.

Trivia

 * Her favorite subject is Science while her least favorite is Literature.
 * Her special skill is that she can draw chemical formulas with a single brush stroke.
 * She wants to be a researcher in the future.
 * She was called "Poison Glasses" during Class 3-E's training using code names.
 * During the Civil War, she was eliminated when Hayami sniped her down.
 * In the tankobon extras, her 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)