Class 1-B's Great Operation!

Chronology
‹ A Mysterious Man - Overly Strict with Regulations	List of Episodes	The Missing Page ›

Episode 460 (Int. Episode 500)
Information
Title:	Class 1-B's Great Operation!
Japanese title:	1年B組大作戦! (Ichi-nen B-Gumi Daisakusen!)
Original airdate:	January 15, 2007 March 26, 2011 (Remastered version)
Broadcast rating:	9%
Remastered rating:	9.3%
Manga case:	#158
Season:	15
Manga source:	Volume 53: Files 5-6 (548-549)
Case
Cast:	Conan Edogawa Ai Haibara Detective Boys Sumiko Kobayashi Chiharu Matsubara Kamen Yaiba
Case solved by:	Conan Edogawa Ai Haibara Detective Boys
Next Conan's Hint:	Eye of a die N/A (Remastered version)
Staff
Director:	Masato Sato
Organizer:	Hisako Tsuji
Storyboard:	Hisako Tsuji
Episode director:	Takahiro Okada
Animation director:	Keiko Sasaki (chief) Katsutoshi Kobayashi
Character design:	Mari Tominaga Keiko Sasaki (sub-character) Kumiko Shishido (design works)
Production cooperation:	Studio Elle
Voice Cast: Minami Takayama as Conan Edogawa Megumi Hayashibara as Ai Haibara Yukiko Iwai as Ayumi Yoshida Wataru Takagi as Genta Kojima Ikue Otani as Mitsuhiko Tsuburaya Yuri Shiratori as Maria Higashio Yuko Kato as Sumiko Kobayashi Rikako Aikawa as Takuma Sakamoto Yuko Sato as Boy A  Chie Nakamura as Boy B  Asami Sanada as Boy C  Chiaki Maeda as Girl A  Emi Motoi as Girl B  Yukiko Amada as Girl C  Risa Hayamizu as Girl D
Music
Opening song:	Kumo ni Notte
Closing song:	Shiroi Yuki

Class 1-B's Great Operation! (1年B組大作戦! ,Ichi-nen B-Gumi Daisakusen!) is the 460th episode of Detective Conan anime.

Characters introduced

Maria Higashio
	7 years old Teitan Elementary student

Takuma Sakamoto
	7 years old Teitan Elementary student

Cast

Characters
Conan Edogawa Ai Haibara Ayumi Yoshida Genta Kojima Mitsuhiko Tsuburaya Sumiko Kobayashi Chiharu Matsubara Kamen Yaiba (sticker)

Case

Situation

The teacher of the Detective Boys decides to give the class a mental test. Conan is called by the teacher so the class must solve it without him. They solve it with the help of two silent out-casted students. It turns out it was a plan to include the new students so they feel more involved.

The code contains numbers were assigned to members of the class: Mitsuhiko got the 1, Ayumi the 2, Conan the 3, Maria Higashio the 4, Genta the 5, Takuma Sakamoto the 6. Genta's number was the only one to be red. The students then found a paper with dice numbers, in the order 3-1-6-2-4-5, the 1 being the only red. As Conan was called out, Haibara had to play Conan's role to make the students work together to solve the code and called his name whenever Conan's name is mentioned in the solving process.

People

Takuma Sakamoto
	7 years old Teitan Elementary student

Maria Higashio
	7 years old Teitan Elementary student

Resolution

  Show spoilers »

Actually, the students' names were supposed to be aligned as in a shiritori game (where the last syllable of a word is the syllable that starts the following word). Genta's number was red; as a result, he was the first in the game. The game led the names to be aligned in this order: Genta (1), Takuma (2), Maria (3), Ayumi (4), Mitsuhiko (5), Conan (6). Those last numbers order were assosciated with the dice numbers and the assigned numbers.

• 3 - Maria - 4
• 1 - Genta - 5
• 6 - Conan - 3
• 2 - Takuma - 6
• 4 - Ayumi - 2
• 5 - Mitsuhiko - 1

The students then counted the syllables in their names, and picked the one corresponding to the assigned numbers, before aligning them in the previous order. The solution of the code was "Ongakushitsu" (music room).

• Higashio Maria - 4 - O
• Kojima Genta - 5 - N
• Edogawa Conan - 3 - Ga
• Sakamoto Takuma - Ku
• Yoshida Ayumi - Shi
• Tsuburaya Mitsuhiko - Tsu

Aftermath

After solved riddle that Kobayashi give to the class as activities, then Detective Boys have idea for next activities to investigate Mysterious Western Style house next to Agasa's House. They speculate Eto family house which perharps Ayumi found on a preview case was haunted house. The house actually is Kudo residence.

Trivia

• In this episode, Conan doesn't explain the code resolution, only the culprit's motive.
• Takuma Sakamoto was hurt shortly after school began, and was only able to return to class in October.
• In this case, Haibara stated that in their last health check, she and Ayumi were about the same weight and height.

Remastered version

A remastered version of this case was aired on March 26, 2011, due to production delay for episode 610 caused by 2011 Tōhoku earthquake.

In other languages

Language	Title	Translation
Catalan (Catalan dub)	La gran operació de 1-B	1-B great operation
Italian	Gli indizi della maestra	The teacher's sign
Thai	ปฏิบัติการครั้งใหญ่ของ ป.1 ห้อง B!	Class 1-B's Great Operation!
Vietnamese	Hoạt động ngoại khóa của lớp 1B!	Extracurricular activities of class 1B!

See also

• Season 15