Assassination Classroom Wiki

Ryunosuke Chiba (千葉 龍之介 Chiba Ryūnosuke) is a student in Korosensei's Class 3-E of Kunugigaoka Junior High School.


Chiba has black hair with long bangs that cover his eyes, which marks off part of his vision like a gun sight and the reason for his remarkable skill with firearms. Chiba has an intense gaze that made others uncomfortable, which is the reason for growing out his bangs.[1] In the anime, he has maroon-colored eyes.


Chiba is a serious, stoic and most calmest boy in Class 3-E who doesn't talk a lot. Like Rinka Hayami, he has been compared to a working adult and although the two are very similar, Chiba is less stoic and speaks even less than Hayami.

On the other hand, Chiba is shown to notice the small details of people around him. An example of this trait is when he notices Karma Akabane being glum over his fallen grades and cheers him up by prompting him to insult Korosensei about the Home Economics scores.[2]


Chiba was officially introduced when he and Rinka Hayami are given the task of shooting Okuda's "Victoria Falls" BB pellets into Tomoya Seo and Kaho Tsuchiya's coffee.[3]

Chiba also got some spotlight time during the Assassination Island arc where he and Hayami were tasked with shooting Korosensei when he was trapped and suppressed by students. The two missed him by half a second and lost faith in their ability to shoot. When the time for the class to face Gastro came, Korosensei trusted them with the revolvers they took from some guards when continue to the top floor. This put them in a conflicted state due to their previously failed shooting attempt. When they first went against Gastro, Hayami was the first to shoot and missed. Due to her shooting, Gastro was able to identify where she was and shot in between the seats which she narrowly dodged. By this point, Chiba hadn't shot yet so Gastro hadn't identified his position. Even when Korosensei shuffled the class and the shooter thought he knew his whereabouts, he remained hidden among his classmates. Before delivering the final blows, Korosensei offers advice to Chiba and Hayami who are scared of messing up again by telling them that they don't need to bear the responsibilities by themselves and it's okay if they fail because the class will back them up. This gives them the courage to successfully carry out their shooting and defeat Gastro.

Chiba made another notable appearance in Chapter 76 where he and Rinka were banned from the shooting range after getting carried away and winning all the prizes due to their proficiency of their marksmanship.

During the Civil War arc, Chiba sided with the red (kill) team. At the start of the battle, under Karma Akabane's direction, Chiba immediately eliminated Meg Kataoka to deny the opposing team of any tactical options. Despite being paired with Taiga Okajima acting as his rear guard, the pair were outflanked by Yukiko Kanzaki and eliminated from the battle.

Seven years later, he was shown along with Yuma Isogai and the others that went to Class 3-E buildings to repair the classroom and he become the engineer to test out durability of the old buildings by checking every part of the buildings and making the list of it.


Marksmanship: Chiba is the best marksman among the boys (and all of Class 3-E).[4] He excels in spatial calculation and, as such, is unmatched in long distance shooting. When it comes to balance and kinetic vision, his is inferior to Rinka Hayami's, which makes it a liability for him to focuses his marksmanship on ground level or rocky formations. His abilities have even earned him the praises of Lovro Brovski, a hitman dealer and a retired assassin.[5]


Rinka Hayami[]

Chiba and Hayami are shown to have a steady friendship due to their similar personalities and roles as the best gunmen for their side of the class. During Korosensei's Assassination Test of Courage, they were paired together.

In the official Graduation Album, it is shown that Chiba still interacted with Hayami after graduation with her helping him find employment and setting up his own architect business.


  • “I think we could grow up because … we did our best by searching for sure kill hits. Because someone or something raised us...” [6]


  • The name Ryunosuke means "dragon" (龍) (ryu), "this" (之) (no) and "forerunner, herald" (介) (suke).
  • Ryunosuke's surname Chiba means "thousand" (千) (chi) and "leaf, plane, lobe, needle, blade, spear, counter for flat things, fragment, piece" (葉) (ha/ba).


  • Chiba's favorite food is hard-boiled eggs.
  • Chiba's favorite subject is math while his least favorite is biology.
  • Chiba's hobby/special skill is Triangulation.
  • Chiba was called "Adult Game Protagonist" during Class 3-E training using code names.
  • Before falling in Class E, Chiba was in the Light Music Club.
  • Chiba likes Japanese Hardcore Punk.
  • Chiba's future goal is to become an architect.
  • In the popularity poll of Volume 12, Chiba was ranked 10th.
  • In the tankobon extras, Chiba's statistics were listed as:
    • Physical strength: 3.5
    • Mobility: 3
    • Close-range assassination: 3
    • Long-range assassination: 5
    • Academic ability: 4
    • Characteristic skill: 5 (super long distance sniping) 
  • Chiba's school rankings are:
    • First Term Midterms: 91st, 338 points
    • First Term Finals: 25th, 430 points
    • Second Term Midterms: 36th, 411 points
    • Second Term Finals: 9th, 429 points


  1. Assassination Classroom Official Character Book: Roster Time
  2. Assassination Classroom manga; Chapter 54: Frustration Time
  3. Assassination Classroom manga; Chapter 24: Retaliation Time
  4. Assassination Classroom Manga: Chapter 24
  5. Assassination Classroom Manga: Chapter 57
  6. Assassination Classroom Manga: Chapter 144


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