Principal Yin

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| **Ryujiro Uematsu** | |
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| **Profile** | |
| Japanese name: | 植松 竜司郎   (Uematsu Ryūjirō) |
| English name: | Principal Yin |
| Age: | 59 |
| Gender: | Male |
| Occupation: | [Teitan Elementary School](/wiki/Teitan_Elementary_School "Teitan Elementary School") principal |
| Status: | Alive |
| **Statistics** | |
| First appearance: | Manga: [File 154](/wiki/Volume_16#School_Mystery_Case "Volume 16")   Anime: [Episode 112](/wiki/The_Seven_Mysteries_of_Teitan_Elementary_School_Case "The Seven Mysteries of Teitan Elementary School Case") |
| Appearances: | Chapters: (/wiki/Ryujiro_Uematsu_Appearances "Ryujiro Uematsu Appearances") Chapters: (/wiki/Ryujiro_Uematsu_Appearances "Ryujiro Uematsu Appearances") Episodes: (/wiki/Ryujiro_Uematsu_Appearances "Ryujiro Uematsu Appearances") |
| Cases solved: | 0 |
| **Actors** | |
| Japanese voice: | [Motomu Kiyokawa](http://en.wikipedia.org/wiki/Motomu_Kiyokawa "wikipedia:Motomu Kiyokawa") (Episodes 112-889)   [Shinpachi Tsuji](/wiki/Shinpachi_Tsuji "Shinpachi Tsuji") (Episode 1170) |
| English voice: | [Andrew Haskett](/wiki/index.php?title=Andrew_Haskett&action=edit&redlink=1 "Andrew Haskett (page does not exist)") |
**Ryujiro Uematsu** (植松 竜司郎 ,*Uematsu Ryūjirō*[?](/wiki/Help:Japanese "Help:Japanese")) is a character in the manga and anime franchise *[Detective Conan](/wiki/Detective_Conan "Detective Conan")*.
## Contents
* [1 Background](#Background)
* [2 Personality](#Personality)
* [3 Plot overview](#Plot_overview)
+ [3.1 School Mystery Case (Manga: 154-155, Anime: 112)](#School_Mystery_Case_.28Manga:_154-155.2C_Anime:_112.29)
+ [3.2 The Old Warehouse of Teitan Elementary School (Manga: 966, Anime: 889)](#The_Old_Warehouse_of_Teitan_Elementary_School_.28Manga:_966.2C_Anime:_889.29)
+ [3.3 Parents' Day at Teitan Elementary School (Manga: 1112, Anime: 1170)](#Parents.27_Day_at_Teitan_Elementary_School_.28Manga:_1112.2C_Anime:_1170.29)
* [4 Non-canon plot overview](#Non-canon_plot_overview)
+ [4.1 The Targeted Security Training (Special Manga: 342-343, Anime: TBD)](#The_Targeted_Security_Training_.28Special_Manga:_342-343.2C_Anime:_TBD.29)
+ [4.2 Courtroom Confrontation IV: Juror Sumiko Kobayashi (Anime: 606-607)](#Courtroom_Confrontation_IV:_Juror_Sumiko_Kobayashi_.28Anime:_606-607.29)
* [5 Appellations](#Appellations)
* [6 Different looks](#Different_looks)
* [7 Quotes](#Quotes)
* [8 Trivia](#Trivia)
* [9 See also](#See_also)
## Background[[edit](/wiki/index.php?title=Ryujiro_Uematsu&action=edit&section=1 "Edit section: Background")]
Ryujiro Uematsu is the current principal of [Teitan Elementary School](/wiki/Teitan_Elementary_School "Teitan Elementary School"), which [Conan](/wiki/Conan_Edogawa "Conan Edogawa"), [Haibara](/wiki/Ai_Haibara "Ai Haibara"), and the [Detective Boys](/wiki/Detective_Boys "Detective Boys") attend. He has been serving with the school for at least thirty years, ever since the new school building was constructed. He softly admonishes [Genta](/wiki/Genta_Kojima "Genta Kojima") for committing abuse on the schoolhouse, when the latter vented his frustration about the strange night-time occurrences for the last few weeks. Some of these were actually committed by the vice-principal, after he had lost hairpiece when it got lost to a gust of wind in the teaching staff room. Uematsu had found and hid it.
## Personality[[edit](/wiki/index.php?title=Ryujiro_Uematsu&action=edit&section=2 "Edit section: Personality")]
He is a kind and also serious man. He has strong principles to show the school buildings respect, but he also has a mischieving side, showed when he hid his vice-principal's lost wig, so the poor man couldn't find it. He is a very easy-going and supportive person, who tries to encourage both his teaching staff and his student charges into following the right path. However, he is also a rather shrewd and eccentric person, as he likes to play jokes whenever the opportunity presents itself, especially on overly shy people. Part of this eccentricity is expressed by his notably overlong eyebrows, which droop down from the side of his temples.
## Plot overview[[edit](/wiki/index.php?title=Ryujiro_Uematsu&action=edit&section=3 "Edit section: Plot overview")]
### School Mystery Case (Manga: [154-155](/wiki/Volume_16#School_Mystery_Case "Volume 16"), Anime: (/wiki/The_Seven_Mysteries_of_Teitan_Elementary_School_Case "The Seven Mysteries of Teitan Elementary School Case"))[[edit](/wiki/index.php?title=Ryujiro_Uematsu&action=edit&section=4 "Edit section: School Mystery Case (Manga: 154-155, Anime: 112)")]
He is the principal of the school, a charming old man who likes children.
### The Old Warehouse of Teitan Elementary School (Manga: (/wiki/Volume_91#The_Old_Warehouse_of_Teitan_Elementary_School "Volume 91"), Anime: (/wiki/The_New_Teacher%27s_Skeleton_Case "The New Teacher's Skeleton Case"))[[edit](/wiki/index.php?title=Ryujiro_Uematsu&action=edit&section=5 "Edit section: The Old Warehouse of Teitan Elementary School (Manga: 966, Anime: 889)")]
Conan, Haibara, the Detective Boys, Sumiko, Rumi, and Ryujiro.
He accompanies [Rumi](/wiki/Rumi_Wakasa "Rumi Wakasa"), [Sumiko](/wiki/Sumiko_Kobayashi "Sumiko Kobayashi"), and the Detective Boys to visit the warehouse and, with a glaring eye, tells them that someone died in the house in the street next to the school ten years ago, and that the criminal might have died in the warehouse. He then says that criminals must atone, or they will die a dog's breath.
### Parents' Day at Teitan Elementary School (Manga: (/wiki/Volume_104#Parents.27_Day_at_Teitan_Elementary_School "Volume 104"), Anime: (/wiki/The_Mystery_of_the_Man-Eating_Classroom "The Mystery of the Man-Eating Classroom"))[[edit](/wiki/index.php?title=Ryujiro_Uematsu&action=edit&section=6 "Edit section: Parents' Day at Teitan Elementary School (Manga: 1112, Anime: 1170)")]
## Non-canon plot overview[[edit](/wiki/index.php?title=Ryujiro_Uematsu&action=edit&section=7 "Edit section: Non-canon plot overview")]
### The Targeted Security Training (Special Manga: [342-343](/wiki/Special_Volume_31#The_Targeted_Security_Training "Special Volume 31"), Anime: TBD)[[edit](/wiki/index.php?title=Ryujiro_Uematsu&action=edit&section=8 "Edit section: The Targeted Security Training (Special Manga: 342-343, Anime: TBD)")]
### Courtroom Confrontation IV: Juror Sumiko Kobayashi (Anime: [606-607](/wiki/Courtroom_Confrontation_IV:_Juror_Sumiko_Kobayashi "Courtroom Confrontation IV: Juror Sumiko Kobayashi"))[[edit](/wiki/index.php?title=Ryujiro_Uematsu&action=edit&section=9 "Edit section: Courtroom Confrontation IV: Juror Sumiko Kobayashi (Anime: 606-607)")]
He tells Sumiko to be sure of herself when she'll be at the courtroom. He then reveals to the Detective Boys what happened to her and was confident that they could solve the case.
## Appellations[[edit](/wiki/index.php?title=Ryujiro_Uematsu&action=edit&section=10 "Edit section: Appellations")]
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| Picture | Name | What they call Ryujiro Uematsu | What Ryujiro Uematsu calls them |
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|  | [Conan Edogawa](/wiki/Conan_Edogawa "Conan Edogawa") | Principal (*Kōchō-sensei*, *Kōchō*) | - |
|  | [Mitsuhiko Tsuburaya](/wiki/Mitsuhiko_Tsuburaya "Mitsuhiko Tsuburaya") | Principal (*Kōchō-sensei*) | - |
|  | [Ayumi Yoshida](/wiki/Ayumi_Yoshida "Ayumi Yoshida") | Principal (*Kōchō-sensei*) | - |
| Picture | Name | What they call Ryujiro Uematsu | What Ryujiro Uematsu calls them |
| --- | --- | --- | --- |
|  | [Sumiko Kobayashi](/wiki/Sumiko_Kobayashi "Sumiko Kobayashi") | Principal (*Kōchō-sensei*) | Kobayashi-sensei |
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## Different looks[[edit](/wiki/index.php?title=Ryujiro_Uematsu&action=edit&section=11 "Edit section: Different looks")]
* His looks don't change a lot between episode 112 and episode 606, although he becomes a bit more detailed and arranged. In episode 889, there is a major change that was done in his appearance, making him look younger and his hair paler. His eyelashes are a bit shortened and are less expressive. He is now also able to open one eye when he is talking, and only when he is serious and his creepy look compared to before, when his eyes were always shown closed.
* However, his look changed back to old one in episode 1170, as the animator in charge of his scenes didn't have access to the new one for references.
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| Episode 112 | Episode 606 | Episode 889 |
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| Episode 1170 |
## Quotes[[edit](/wiki/index.php?title=Ryujiro_Uematsu&action=edit&section=12 "Edit section: Quotes")]
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| “ | People who commit sins must atone or they will spend the rest of there lives cowering in fear or dies a dog's death. | „ |
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## Trivia[[edit](/wiki/index.php?title=Ryujiro_Uematsu&action=edit&section=13 "Edit section: Trivia")]
* Even though his full name is known in the manga and the anime, he is credited simply as "principal" (校長先生 ,*kōchō-sensei*[?](/wiki/Help:Japanese "Help:Japanese")) in the credits of [episode 1170](/wiki/Episode_1170 "Episode 1170").