Masumi Sera

Teitan High School's Female Detective

The third child of the Akai family (referred to as the third son), a female detective attending Teitan High School. Excels in deduction and combat abilities, calls Kudou Shinichi 'magician.' Half with a British mother.

Quotes

  • Magician? What nonsense...
  • I'm a detective, so I can't just be cowardly.
  • I don't believe in magicians, but your deductions are interesting.
  • You have to cherish family, that's my style.
  • Don't screw around, leave this to me.

Trivia

  • Masumi Sera initially refuses to acknowledge Kudou Shinichi's identity, calling it 'magician,' but doesn't actually dislike him.
  • Shares the secret that her mother Mary is an MI6 spy who has been de-aged.
  • Possesses extremely high combat ability and uses karate nearly equal to Ran's.
  • Due to her short-tempered, quarrelsome nature, she sometimes uses strong language like 'teme.'
  • From her experience living in England, she can handle everyday conversational English.
  • As a child, she was a silent girl who never smiled, but developed her unique personality under her brothers' influence.

Alternate names

Masumi Sera Sera-chan Detective Masumi

Tags

Detective Conan High School Detective Akai Family Female Detective Teitan High School Half Boyish Combat Ability Detective Character

Profile

Species
Human
Gender
Female

Appearance

Overall appearance
Lively and boyish appearance. Prominent fangs are characteristic, with short-cut hair. Speaks casually. Also gives a cute impression when smiling to show her fangs.
Height
About 162cm
Eye color
Brown
Hair color
Black
Distinguishing features
  • Prominent fangs
  • Dark circles under eyes
  • Boyish hairstyle
Iconic items
  • Hat
  • Detective hat
  • Pistol (when used as a weapon)

Personality and abilities

Core personality
Lively
Detailed personality
Bright and sociable, also possesses tomboyish manliness. Has a short-tempered and quick-to-fight side, but is loyal and family-oriented. Remains calm with sharp insight in deductions, pursuing matters without unsettling others.
Keywords
  • Boyish
  • Lively
  • Short-tempered
  • Quick to fight
  • Detective
  • Family-oriented
  • Sharp-minded
  • Tough stamina
  • Sociable
Talents
  • Deductive reasoning
  • Advanced combat ability (Jeet Kune Do)
  • Ambidextrous martial arts talent
  • Excellent observation
  • Reflexes to dodge bullets
  • High athletic ability
Skills
  • Detective techniques
  • Investigation techniques
  • Disguise techniques
  • Marksmanship
  • Driving skills (motorcycle)
Motivation
Wants to support her family's safety and protect a stable, peaceful daily life. Also aims to locate her brother Shuichi (Akai Shuichi) and restore her mother Mary's original form.
Habits
Often calls Conan 'magician.' Has a short temper, and her tone becomes rough.
Favorite foods
Ramen, Bikini
Hobbies
Deduction, Martial arts, Motorcycle

History

Backstory
Third daughter of Akai Tsutomu (father) and Mary Sera (British mother). Has two older brothers, Shuichi (FBI agent) and Shukichi (shogi player), raised using different surnames. In childhood, mother was de-aged by the poison APTX4869, and with her brother's status unknown, returned from her hometown England to Japan. Transferred to Teitan High School, became classmates with Ran and others, and began detective activities. Known as a powerhouse due to her high combat ability.
Debut date
July 31, 2013
Work title
Detective Conan
Media type
Manga
Episode or chapter
File 617 (Weekly Shōnen Sunday 2013 issue 33)

Return to Japan from England

Significant event
Return to Japan from England
Description
Returned to Japan with her mother, involved in the secret of her encounter with Kudou Shinichi (pre-de-aging) 10 years ago.

Transfer to Teitan High School

Significant event
Transfer to Teitan High School
Description
Transferred into Ran's class and began interacting with the Mori Detective Agency group.

Active role in many incidents

Significant event
Active role in many incidents
Description
Handles incidents with deduction and combat ability, deepening bonds with Mori Ran and Kudou Shinichi (Conan).

Mother Mary's de-aging and joint struggle

Significant event
Mother Mary's de-aging and joint struggle
Description
Mother also de-aged; fights the Black Organization together while investigating family truths.

Relationships

Akai Tsutomu

Father

Masumi Sera's father. Status unknown.

Mary Sera

Mother

Masumi Sera's mother. MI6 spy who has been de-aged.

Shukichi Haneda

Sibling

Second brother. Shogi player.

Edogawa Conan

Best friend

Gradually convinced of Conan's identity, cooperating to solve cases.

Mouri Ran

Teammate

High school classmate and fellow detective. Occasionally cooperates in case resolutions.

Mary Sera

Family

Her mother and MI6 colleague. Pursues the Black Organization together.

Teitan High School

Teitan High School: unknown

Media appearances

Detective Conan

Manga / Protagonist

2013 issue 33 - present

Detective Conan

Anime / Supporting

Appearances from 2014 onward

Detective Conan Theatrical Edition Series

Movie / Supporting

Voice cast and creators

Noriko Hidaka

Voice actor
Noriko Hidaka
Language
Japanese
Version or series
TV Anime version
Notes
Current main voice actress

Takako Honda

Voice actor
Takako Honda
Language
Japanese
Version or series
Theatrical films from 24th onward

Gosho Aoyama

Creator name
Gosho Aoyama
Role
Original author

Related goods

Masumi Sera Figure

Item name
Masumi Sera Figure
Category
Figure
Availability
Regular

Detective Hat Accessory

Item name
Detective Hat Accessory
Category
Accessory
Availability
Limited