One Piece School

One Piece School is a One Piece spin-off manga by Sohei Koji. It has been published in Saikyo Jump since August 2019. Its first physical volume was published on April 3, 2020.

Since April 8, 2022, the series is also available on Shōnen Jump+. New chapters are published on Shonen Jump+ in two parts: the first half at the beginning of a month, and the second half in the middle of a month. Saikyo Jump continues to publish full chapters at the beginning of every month.

Premise
The premise of this manga involves various characters from One Piece being placed in a school setting. Koby is a student who transfers into the same class as Monkey D. Luffy, which is taught by their homeroom teacher Aokiji.

Grand City
Grand City (グランド) is a city located in an unknown region. While it has a functioning system of government, the congressman is considered to be corrupt, and the middle schools in the city have much more influence than any other group or organization.

Café Baltigo
Café Baltigo (カフェ バルティゴ) is a café located in Grand City. It is secretly run by the Revolutionary Army. It has four branch offices named after each cardinal direction, and is owned by Emporio Ivankov.

Under Bridge Inn
Under Bridge Inn (木喬の下のメシ屋) is an inn located under a bridge in Grand City. It is run by Terry, and frequented by Whitebeard.

New World Middle School
New World Middle School (新世界中学校) is the school that Koby and his friends attend, as well as "Grand City's Most Powerful" school.

Moby Dick School


Moby Dick School (モビーディック校) is a branch school of New World Middle School, located on a boat in the ocean. It's connected back to the mainland by a single dock.

Ohimegaoka Junior High School
Ohimegaoka Junior High School (王姫ヶ丘中学校) is a prestigious junior high school, exclusive enough that someone's transfer there is debated at the "Council of the World's Top Influential Families" (also known as the Levely).

Death Boys Music School
Death Boys Music School (デスボーイズ音楽中学校) is a music school, outside Grand City. The only known student is Brook.

Kuja Girls Junior High
Kuja Girls Junior High (九蛇又予中学校) is a girls-only junior high school. Despite it being a separate school, one of its students is still considered one of New World Middle School's "7 Seniors". The school can drive, both in water and on land.

South Grand Primary School
South Grand Primary School (グランド南小の) is a primary school that Eustass Kid and Killer used to attend.

Characters
Characters appearing in One Piece School are caricatures of their main series counterparts, usually in their pre-Timeskip forms, and retain their abilities. High-ranking Marines usually represent teachers, while pirates are students and CP9 is the student council.

Below is a full list of characters that have appeared in the series, ordered alphabetically. Characters are listed using aliases used in One Piece School:

Teachers

 * Attach
 * Bastille
 * Mr. Borsalino Kizaru (2nd Year Student Affairs Manager)
 * Brannew
 * Dalmatian
 * Doberman
 * Gaimon
 * Mr. Kuzan Aokiji (Class 1-1 Head Teacher and 1st Year Student Affairs Manager)
 * Lonz
 * Momonga
 * Monkey D. Garp
 * Onigumo
 * Pudding Pudding
 * Mr. Sakazuki Akainu (3rd Year Student Affairs Manager)
 * Sengoku (Principal)
 * Shu
 * Smoker
 * Stainless
 * Strawberry
 * T Bone
 * Terracotta
 * Yamakaji

Student Council
The student council is a group of students who are dedicated to "protecting the rules" of New World Middle School. They are authorized, both through the school and the law, to use violence to enforce these standards, and have the ability to suggest suspensions to the principal, which are usually accepted.
 * Blueno
 * Fukurou
 * Hattori
 * Jabra (Vice-President, former temporary President)
 * Kaku (Vice-President)
 * Kalifa (Secretary)
 * Kumadori
 * Rob Lucci ("Hyouta Hattori" (ヒヨウくん)) (President)
 * Spandam (Advisor)

Class 1-1

 * Babe
 * Brook (formerly)
 * Buggy
 * Cabaji
 * Chew
 * Fullbody
 * Hatchan
 * Jango
 * Jinbe
 * Koby
 * Kuroobi
 * Masira
 * Miss Monday
 * Mohji
 * Monkey D. Luffy ("Mr. 5686")
 * Mr. 9
 * Nami
 * Nefertari Vivi (Class Monitor)
 * Nico Robin
 * Richie
 * Risky Brothers
 * Roronoa Zoro
 * Sanji
 * Tony Tony Chopper
 * Usopp ("Mr. 800")
 * Zambai
 * Franky

Class 1-2

 * Kumashi
 * Perona

Class 1-3

 * Scratchmen Apoo

Class 1-4

 * X Drake

Class 1-5

 * Jewelry Bonney

Class 1-6

 * Bepo
 * Jean Bart
 * Penguin
 * Shachi
 * Trafalgar D. Water Law

Class 1-7

 * Capone Bege
 * Vito

Class 1-8

 * Urouge

Class 1-9

 * Basil Hawkins

Class 1-10

 * Eustass Kid
 * Heat
 * Killer
 * Wire

Unknown Class

 * Bellamy
 * Buchi
 * Chess
 * Dosun
 * Gem
 * Gin
 * Hamburg
 * Krieg
 * Kuromarimo
 * Pearl
 * Sarkies
 * Sham

Class 2-6

 * Blueno
 * Fukurou
 * Jabra
 * Kaku
 * Kalifa
 * Kumadori
 * Rob Lucci

Unknown Class

 * Arlong
 * Chaka
 * Enel
 * Miss Doublefinger
 * Mr. 1
 * Pell
 * Shyarly

Class 3-3

 * Wanda

Class 3-9

 * Crocodile
 * Dracule Mihawk

Unknown Class

 * Atmos
 * Blamenco
 * Blenheim
 * Blondie
 * Islewan
 * Donquixote Doflamingo
 * Izou
 * Rakuyo
 * Skull
 * Squard
 * Viola
 * Whitey Bay

Unknown Year

 * Bomba
 * Caesar Clown
 * Conis
 * Dalton
 * Foxy
 * Gatz
 * Gecko Moria
 * Gedatsu
 * Gyaro
 * Haritsu Kendiyo
 * Helmeppo
 * Hotori and Kotori
 * Itomimizu
 * Johnny
 * Kamakiri
 * Kiev
 * Koza
 * Kuro
 * Lassoo
 * Macro
 * Marguerite (Formerly)
 * Marianne
 * Merry
 * Mikita
 * Minochihuahua
 * Minotaurus
 * Miss Friday
 * Monda
 * Mozu and Kiwi
 * Mr. 13
 * Nero
 * Peepley Lulu
 * Pekoms
 * Ohm
 * Pike
 * Porche
 * Raki
 * Risky Brothers (Zombies)
 * Roshio
 * Satori
 * Senor Pink
 * Shoujou
 * Shura
 * Spandam
 * Tansui
 * Tightrope Walking Funan Bros
 * Tilestone
 * Wanze
 * Wyper
 * Yosaku

Third Year

 * Marco
 * Jozu
 * Whitebeard

Unknown Year

 * Tate

Teachers

 * Mrs. Elder Nyon (Principal)

Third Year

 * Boa Hancock
 * Boa Marigold
 * Boa Sandersonia

Unknown Year

 * Aphelandra
 * Cosmos
 * Daisy
 * Kikyo
 * Marguerite
 * Ran
 * Rindo
 * Sweet Pea

Other Students

 * Alvida (Unnamed middle school)
 * Bartolomeo (Unnamed primary school)
 * Heppoko (Unnamed middle school)
 * Koala (Second year student at unknown school
 * Peppoko (Unnamed middle school)
 * Poppoko (Unnamed middle school)
 * Portgas D. Ace (Second year student at unknown school)
 * Sabo (Second year student at unknown school)

Seven Studentlords
The Seven Studentlords (七武生) are seven third-year students who go to New World Middle School. They're said to be the strongest students in the school.
 * Boa Hancock (Despite not going to New World Middle School)
 * Crocodile
 * Donquixote Doflamingo
 * Dracule Mihawk

Four Emperors
The Four Emperors are four students who are said to be the guardians of their respective schools. Two attend New World Middle School, while the other two attend separate schools.
 * Whitebeard (Moby Dick School, a branch school of New World Middle School)

Other Characters

 * Belo Betty
 * Boo
 * Boodle
 * Bunny Joe
 * Chicken
 * Chimney
 * Chinjao
 * Chouchou
 * Cocox
 * Curly Dadan
 * Edward Newgate
 * Emporio Ivankov
 * Genbo
 * Gonbe
 * Gyoru
 * Hack
 * Igaram
 * Ipponmatsu
 * Jalmack (Congressman)
 * Karasu
 * Karoo
 * Kokoro
 * Lindbergh
 * Lionbuta
 * Minatomo
 * Moda
 * Moodie
 * Morley
 * Mr. 7
 * Nefertari Cobra
 * Ninjin
 * Onigiri
 * Pappag
 * Piiman
 * Pinky
 * Sai
 * Shelly
 * Su
 * Tamanegi
 * Terry
 * Tonjit
 * Zeff (Former New World Middle School student)

Below is a list of animal species that have appeared in the series:
 * Bananawani
 * Blue Gorillas
 * Den Den Mushi
 * Elephant Tuna
 * Hiking Bear
 * Humandrills
 * Kraken
 * Kung Fu Dugong
 * Sea Kings (Momoo)
 * South Bird

Chapters not yet published in volume format
The following chapters have appeared in Saikyō Jump but have yet to be reprinted in tankōbon format.
 * 019. School Has Started (学校は始まった)
 * Luffy allows Sanji and Zoro to continue fighting, only stopping Buggy's interference. When they've finished, the three of them along with Nami and Usopp vow to be friends. Back in the present day, Koby notices that most people act the same as at their entrance ceremony, though he remarks that Buggy has gotten nicer.
 * 020. Big Brother is a Worrier (お兄ちゃんは心配性)
 * Luffy forgets his gym uniform, so his brothers, Sabo and Ace, go bring it to him. They run into various students on the way, and Sabo helps to save somebody from a collapsing building.
 * 021. Rumored Wicked Girl (噂の悪女)
 * Koby hears rumors about Robin dating Mr. Kuzan Aokiji, and decides to investigate. He quickly discovers that she's seemingly also dating Trafalgar Law, Eustass Kid, Rob Lucci, and Crocodile, not knowing how to react. Chopper avoids answering when he's asked about it, and Robin is suddenly confronted by Spandam, with Koby watching. However, she suddenly reveals that they had actually been planning a surprise birthday party for Koby and Luffy, and she had been inviting the different students.
 * 022. Café Baltigo (カフェ バルティゴ)
 * Koby and Zoro run into Sabo while investigating a group called "RA", and he invites them into Café Baltigo. After sitting with Perona, she informs them about Donquixote Doflamingo and warn them to be careful. This prompts the duo to train, and after Zoro leaves, Koby is attacked by various members of Doflamingo's group. However, he is saved by RA, the Revolutionary Army, promising to keep Sabo's involvement secret from Luffy
 * 023. White-Bearded Old Man (白いひげのおっさん)
 * Luffy and Zoro meet Whitebeard in an inn, becoming friendly with each other. Whitebeard then returns to Moby Dick School, where he's attacked by Crocodile, who states that the students of New World Middle School are preparing to fight back against Whitebeard's rule as Emperor. Crocodile states that he'll become the next Emperor, and Whitebeard challenges him and the rest of the students to try their best to defeat him.
 * 024. The Town's Charisma, Joker (街のカリスマジョーカー)
 * 025. Kaisen (開戦)
 * 026. Dai ransen (大乱戦)

Trivia

 * Marguerite was originally shown as a New World Middle School student, but was later a student at Kuja Middle School