Masumi Sera

Masumi Sera
Profile
Japanese name:	世良 真純 (Sera Masumi)
Age:	16-17?
Gender:	Female
Statistics
First appearance:	Manga: Chapter 768 Anime: N/A
Appearances:	Chapters: 112 Episodes: 73 Movies: 2 Specials: 1 Openings: 15 Closings: 7
Cases solved:	?

Masumi Sera (世良 真純 ,Sera Masumi) is a self-proclaimed high school detective and practitioner of the martial art Jeet Kune Do. After making a mostly correct deduction during a murder case, she transfers to Ran's high school class. She seems to know that Conan is a detective.

Background

Sera is a high school detective and skilled at Jeet Kune Do, a type of martial arts. She can fight at either the same or better level as Ran. She transfers to Ran and Sonoko's class at Teitan High. Since three years ago, she'd been living in America with her parents. She claims she'd rather live in Japan where she was born and raised, so she came to Tokyo and is currently living in a hotel.

Appearance

Sera transfers to Teitan High School.

At first, she wears a fedora and a dark jacket which gives her an androgynous appearance. When she transfers to Teitan High, she gets rid of her fedora and wears appropriate female clothing. Her hair is dark, wavy, and short; it doesn't even touch her shoulders. Even then, she is rather tomboyish; Genta mistakes her for a man, and Sonoko comments she has a petite figure.

Personality

Sera has a "cheery, sociable, boyish" personality and is well liked by her classmates at Teitan High. On their first meeting, Sera fails to correct Sonoko's mistaken impression that she is a man and even makes it worse by declaring that Ran is "his type". On another hand, Sera purposefully lured a hostage-taker into a sniper's sight with a smile, hoping he would be shot without showing any apprehension about the man dying presumably messy death in front of her. Sera is especially quick minded, coming up with clever plans and adapting them to sudden changes rapidly. Sera seems to be prone to dramatics like most detectives are, but perhaps to a lesser degree than Shinichi or Hattori as she bluntly says who the criminal is without preamble. Although she has crime scene experience, Sera seems to be less skilled as a detective than Conan, apparently missing a critical clue that was necessary to understand how the murderer's setup worked, although Conan opines that Sera purposely made an error in order to test him. Her catchphrase may be "case closed".

Plot overview

Sera's Introduction (Manga 768-770)

Sera first met Sonoko, Ran, and Conan on a bus after she was mistaken for a groper. After Sonoko declared Sera was the groper, Sera and Ran got into a fight, with Sera's Jeet Kune Do holding even against Ran's karate. Conan and Sera cleared up the misunderstanding by pointing out the real groper. Sonoko then mistook Sera for a boy, an impression which wasn't helped by Sera declaring that Ran was "his type". Sera and Ran both discovered they were heading to the same hotel, about which Conan is less than pleased.

Sera finds out the hotel she is staying at doesn't have a room available and complains at the front desk. A man then falls into the parking lot and dies. Conan runs to the source of screaming while Sera told the guard to watch the elevators before running to the roof. She immediately declares the crime to be a murder, giving her reasoning. She then reveals her name, Sera, that she is a detective, and knows Conan is a detective as well.

Megure is not pleased to have another High School Detective underfoot but lets Sera and Conan investigate regardless. After listening to the suspect testimony, police observations, and examining the crime scene, Sera announces that she has solved the case.

However, Sera's deduction leaves out a critical detail; Conan is therefore forced to use Shinichi's phone to call his own, give Inspector Megure Conan's phone, and speak through Shinichi's as Shinichi using the voice-changer bow tie. Shinichi figures out the detail that had Sera stumped, although a look she gives Conan as he runs off suggests her omission was possibly intentional, and once during the phone conversation she tries to trick Shinichi into admitting that he is physically present at the crime scene instead of being explained the details by Conan and Megure.

The other day, Sera transfers to Teitan high school, surprising both Ran and Sonoko. She was rather popular at school surrounded by students asking her questions about herself.

Kogoro Detective Agency Hostage Crisis (Manga 771-774)

Let's hear your brilliant deduction! (771)

According to Sonoko, Sera has become very popular at Teitan high for being "cheery, sociable, boyish, and cute...and on top of that, she is a jeet kun do-using female detective!" One classmate compares her to Kudo Shinichi who has been taking a break from school. Sera tells inquiring classmates that she has been staying in America with her parents since three years ago, but "rebelled" because she would rather live in her Japan where she was born and raised. She sneaks up behind Sonoko and Ran after school because she wanted to speak to Conan at the Mouri Detective Agency. At the agency, Sera is unhappy to hear that Conan and the rest of detective boys are staying at Agasa's house and will be camping the following day. She settles for asking Kogoro if Conan is always at his side when he solves cases, hinting that she suspects Conan is the real brains behind "Sleeping Kogoro".

Just as Sera is about to walk out the door, three female mystery writers and a man enter the agency. After a moment of confusion, the man suddenly fires a gun into the roof and takes the detective agency hostage. His demands are that Kogoro figure out which of the three writers killed his sister at a ryokan one month ago. The quick thinking Sera sidles up to Ran and tells her to go for the man's gun after she takes his legs out. Sera's leg sweep sends to man to the floor, and Ran removes the gun from the man's hand with a kick; however, Sera leaps back when the man reveals he has bombs strapped around his chest and will detonate them if they try to stop him.

Meanwhile at Agasa's, Haibara is angry that Conan used Shinichi's voice to solve a case around the suspicious Sera. Conan's response is that Sera is familiar somehow, like they have met before or she looks like someone, and Conan feels she isn't an enemy. Meanwhile Genta and Mitsuhiko tell Conan they saw a high school student walking home with Ran, so the jealous Conan calls Ran's cellphone to hear about it from her.

The hostage taker man orders Ran to answer her phone, but Sera snatches the phone away and says hello to Conan (who is shocked that Sera is with Ran). Sera then tricks the hostage taker and keeps the line connected so Conan can listen in by closing Ran's Sea Cucumber Man cellphone strap in between the screen and keypad of the the flip phone.

Nickname Rules (772)

Sera asks a few insightful questions about the case; however the hostage taker man discovers Ran's phone is still connected. Under gunpoint, Sera steps in front of Ran takes the blame, but Conan, using Shinichi's voice, says he ordered Ran to do it. Sera is mystified by why Shinichi is now on Conan's phone. Sera meanwhile spots a glint of light across from the detective agency and declares that the case will come to an end without Shinichi's help.

Possible Sniping (773)

Sera explains to Ran that she secretly kept the call to Conan connected so he could call the police and research into the case. While Sera is still surprised that Shinichi was on the other end of the line instead of Conan, she had initially hoped that Shinichi would somehow be able to talk down the would-be-murderer. She suspects that Shinichi has figured which one of the suspects is the murderer in the ryokan case, but Shinichi is unable to reveal the truth because the hostage taker would kill the named culprit and then himself. Sera's plan changed when she noticed the lights from the police snipers on the building across from Mouri Detective Agency. She explains to Ran in detail the names and functions of the various police divisions responsible for hostage situations, and tells Ran in a roundabout fashion that this situation will end with the hostage taker being killed by the police.

Sera launches a plan to bring the hostage taker into the snipers' range by telling him he should charge Ran's phone battery. Ran foils her intentions by shutting the curtains, blocking the snipers' shot. To Sera's utter astonishment, Ran tells Sera that she doesn't want to see anyone die in front of her and declares that "Shinichi won't allow anyone to die. He absolutely wouldn't!"

Speculation

Sera mentioning Conan's name.

Sera knew Conan and Ran's identities before they introduced themselves. Although she claimed to know Ran from Karate tournaments, she additionally recognized Conan as a detective. This may indicate Sera has done research or follows stories about Conan's achievements or that she has had direct or indirect contact with Conan and Ran. However, Ran and Conan didn't recognize Sera. Sera might be one of Ran's martial arts rivals, although Ran, did not recognize her. In file 771, it is revealed that she also knows Professor Agasa, although she calls him "Professor whatshisname".

Shuichi Akai's younger sister

Sera and Shuichi Akai.

Sera might be the younger sister of Shuichi Akai. Sera has bags under her eyes identical to Shuichi Akai's. Also, Sera Masumi's name is also incredibly similar to Mobile Suit Gundam character Sayla Mass (セイラ・マス, Seira Masu). Akai's name is derived from Sayla Mass's older brother's name, Char Anzable. Also, Conan said he has a feeling he had met her before.

“	Somehow I feel like we've met her before, it might be that person resembles someone I know, that's why the feeling that we've met before is on my mind...	„

Sera lived in Japan until three years ago when her family moved to America. This matches with the time when Akai was infiltrating the Organization. The family's move to America could be the FBI's attempt to protect them should something go wrong with Akai's mission.

Gallery

• 
• Sera slide kick.png

Trivia

• The kanji for Sera's last name mean 'good world.' The kanji for her first name, Masumi, mean 'true' and either 'pure' or 'net.'

See Also

• Characters