Kuroko Shirai

Onee-sama Loving Judgment Member

Judgment member at Tokiwadai Middle School, underclassman and roommate of Mikoto Misaka. Level 4 esper with teleportation ability. Perverted character characterized by ojou-sama speech and calling her 'Onee-sama'.

Quotes

  • I'll do anything for Onee-sama!
  • Misaka Onee-sama is my shining goddess!
  • This is the 'Hammer of Discipline'!
  • Even if called a pervert, I don't mind. For the sake of Onee-sama's smile!
  • Rather than calling a detective twice, I'll fly there first!

Trivia

  • Her characteristic is always attaching 'desu no' to the end of her sentences.
  • Calls Mikoto Misaka 'Onee-sama' and is her ardent fan.
  • Level 4 high-rank esper who can teleport objects she touches.
  • Frequently receives electric punishments from Mikoto Misaka due to her perverted actions.
  • Popular character across anime, games, and various media.
  • Close friends with Ruiko Saten and Kazari Uiharu in the story.

Alternate names

Shirai Kuroko Kuroko Shirai Judge Judgment Kuroko

Tags

A Certain Magical Index A Certain Scientific Railgun Judgment Roommate Tokiwadai Middle School Esper Teleport Pervert Level 4 Esper

Profile

Species
Human
Gender
Female

Appearance

Overall appearance
Petite middle school girl with brown twin-tails and brown eyes. Often seen in her uniform, speaks with a characteristic ojou-sama tone.
Height
約158cm
Eye color
Brown
Hair color
Brown
Distinguishing features
  • Brown twin-tails
  • Ojou-sama speech pattern
  • Tokiwadai Middle School uniform
Iconic items
  • Iron small darts
  • Uniform jacket
  • Judgment badge

Personality and abilities

Core personality
Devoted
Detailed personality
Kuroko is characterized by her devotion and excessive affection toward Mikoto Misaka, whom she adores like an older sister. She has a very strong sense of justice and strives to maintain public order as a Judgment member, but her perverted tendencies stand out, especially her stalker-like behavior toward Onee-sama, which is sometimes criticized. She is polite and uses courteous speech, but occasionally mixes in sharp-tongued remarks and considerable shyness.
Keywords
  • Sense of justice
  • Devoted
  • Perverted
  • Sharp-tongued
  • Curious
  • Passionate
  • Loyal
  • Eloquent
Motto
I'll do anything for Onee-sama!
Talents
  • Esper ability
  • Teleportation skill
  • Martial arts
Skills
  • Exercising judicial authority (Judgment)
  • Coordination with operators
  • Dart-throwing tactics
  • Quick judgment
Motivation
Protecting Mikoto Misaka and upholding discipline.
Habits
Attaches 'desu no' to the ends of her sentences. Has somewhat excessive confidence in her own actions.
Favorite foods
Sweets, Japanese sweets, Cupcakes, Chocolate
Hobbies
Judgment activities, Taking care of Mikoto Misaka, Martial arts practice, Collaboration with operator Uiharu
Favorite colors
Brown, White
Person
Mikoto Misaka, Kazari Uiharu, Ruiko Saten
Disliked situations
Acts that disrupt discipline, Threats to Mikoto Misaka, Being scolded for her perverted behavior

History

Backstory
Judgment member attending Tokiwadai Middle School and an excellent Level 4 teleporter. Originally became acquainted with junior operator Kazari Uiharu, who commutes from the School Garden dormitory to Branch 177, and gets involved in many incidents. Mikoto Misaka's underclassman and roommate, whom she calls 'Onee-sama' and adores. As a Judgment member, she handles the front lines of incidents and receives many electric shocks from Mikoto due to her perverted approaches, yet continues to devotedly support her.
Debut date
April 10, 2004
Work title
A Certain Magical Index
Media type
Novel

First appearance

Significant event
First appearance
Description
Appears in volume 1 of A Certain Magical Index.

Becoming co-protagonist in Railgun

Significant event
Becoming co-protagonist in Railgun
Description
In the spin-off work A Certain Scientific Railgun, she is spotlighted as a co-protagonist.

Extensive depiction of abilities

Significant event
Extensive depiction of abilities
Description
Battles and security maintenance activities utilizing her ability 'Teleport (Spatial Movement)' are depicted extensively.

Romantic approaches

Significant event
Romantic approaches
Description
Excessive romantic feelings toward Mikoto Misaka lead to approaches that earn her recognition as one of Japan's premier perverts.

Original work continuation and anime adaptation

Significant event
Original work continuation and anime adaptation
Description
Popularity expands further with the anime adaptation, and she appears in related works such as Fantasy Convergence.

Relationships

Mikoto Misaka

Best friend

Roommates who fight together in many events; adores her like an older sister. Devotedly supports her while receiving Mikoto's electric punishments.

Kazari Uiharu

Best friend

Fellow Judgment members who collaborate as operator and field agent. Mutual supporting relationship.

Ruiko Saten

Teammate

Despite lacking esper abilities, they interact occasionally, gradually warming up and speaking casually.

Judgment (Disciplinary Committee)

Judgment (Disciplinary Committee): leader

Tokiwadai Middle School 003 Branch

Tokiwadai Middle School 003 Branch: unknown

Media appearances

A Certain Magical Index

Novel / Protagonist

Publication began in 2004

A Certain Magical Index

Anime / Supporting

2008 TV series

A Certain Scientific Railgun

Manga / Protagonist

Serialization began in 2007

A Certain Scientific Railgun

Anime / Protagonist

2009 TV series

A Certain Magical Index series

Game / Supporting

Multiple platforms

Fantasy Convergence

Commercial / Cameo

2020

Voice cast and creators

Satomi Arai

Voice actor
Satomi Arai
Language
Japanese
Version or series
TV anime version
Notes
Representative voice actress

Satomi Arai

Voice actor
Satomi Arai
Language
Japanese
Version or series
Theatrical version

Satomi Arai

Voice actor
Satomi Arai
Language
Japanese
Version or series
Drama CD

Kazuma Kamachi

Creator name
Kazuma Kamachi
Role
Original author

Kiyotaka Haimura

Creator name
Kiyotaka Haimura
Role
Character designer

Related goods

Various figures

Item name
Various figures
Category
Figure
Availability
Regular

Plush toys

Item name
Plush toys
Category
Plush or doll
Availability
Regular

Can badge sets

Item name
Can badge sets
Category
Accessory
Availability
Regular