Meitantei Conan Movie 21: Karakurenai no Love Letter

Detective Conan Movie 21: The Crimson Love Letter

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Alternative Titles

Japanese: 劇場版『名探偵コナン から紅の恋歌』
English: Detective Conan Movie 21: The Crimson Love Letter
German: Detektiv Conan FIlm 21: Der purpurrote Liebesbrief
Spanish: Detective Conan Película 21: La Carta de Amor escarlata
French: Detective Conan Film 21: La Lettre d'Amour Ecarlate
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Type: Movie
Episodes: 1
Status: Finished Airing
Aired: Apr 15, 2017
Producers: None found, add some
Licensors: Discotek Media
Source: Manga
Genres: ActionAction, DramaDrama, MysteryMystery, RomanceRomance
Themes: DetectiveDetective, HistoricalHistorical
Duration: 1 hr. 51 min.
Rating: PG-13 - Teens 13 or older


Score: 7.671 (scored by 1710417,104 users)
1 indicates a weighted score.
Ranked: #13122
2 based on the top anime page. Please note that 'Not yet aired' and 'R18+' titles are excluded.
Popularity: #3954
Members: 31,780
Favorites: 41

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Ranked #1312Popularity #3954Members 31,780
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Episodes: /1


A bombing case at Nichiuri TV in autumn. The Satsuki Cup, which crowns the winner of Japan's Hyakunin Isshu, is currently being filmed inside the facility. The incident results in a big commotion and, while the building is burning to ashes, the only people left inside are Heiji and Kazuha. They get rescued just in time by Conan, who rushes to the scene. Both the identity and purposes of the bomber are unknown.

While confusion takes over due to the explosion, Conan meets a mysterious beautiful girl who claims she is "Heiji's fiancée". Her name is Momiji Ooka and she is the Kyoto High School champion of the Karuta game. As fate would have it, Kazuha is going to face Momiji in the Hyakunin Isshu, so she begins to train with the help of Heiji's mother, Shizuka, who is a skilled Karuta player.

At the same time, in a Japanese house in Arashiyama, Kyoto's outskirts, the reigning Satsuki Cup champion is murdered. Pictures of the crime scene reveal Momji's presence. Additionally, several Karuta cards were spread around the victim.

Conan and Heiji, along with the Osaka and Kyoto police departments, begin their investigation on the Satsuki Cup and the related murder case. As the inquiry goes on, they come across a secret connected with the Hyakunin Isshu.

(Source: Detective Conan Wiki)


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Related Anime

Characters & Voice Actors


Urakami, Keiko
Sound Director
Urakami, Yasuyuki
Sound Director


Opening Theme

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Jul 16, 2023
Detective Conan Movies Rewatch Before Watching Movie 26: Movie 21

Similar to movie 12, the subject matter of movie 21 isn't going to be of interest to some, particularly something like karuta, which is only culturally relevant to Japan. I enjoyed the movie overall, despite the subject matter. At the end of the day, a good DC movie presents an interesting case, a clever trick or a difficult code, good action sequences, and strong characters/interactions, and this movie hits all except the trick/code (non-existent in the movie). In particular, I thought the action sequences were spectacular, complemented by the lovely BGM this time. While the romance ...
Oct 7, 2020
A Masterpiece of a movie. We have an interesting case here, which introduces us to the world of Karuta cards. The setting is west Japan, Osaka and Kyoto or the Kansai region to be exact. And you know what that means, we get a partner, technically Conan get's one, Heiji is working with us and Ran get's to spend time with her second BFF Kazuha, who is quite worried cause now she has a competitor for Heiji's love a wealthy and gorgeous Momiji Oka.
As with all Detective Conan Movies the Art is outstanding as well as Sound, the OSTs were nice. Also the Ending song ...
Feb 13, 2024
Mixed Feelings
Hot damn, it's been a minute since I wrote a Detective Conan movie review! Wasn't that long ago that I- ...the hell you mean it's been nearly 8 years.


Crimson Love Letter is another unique entry into the movie series, taking place well away from the usual stomping grounds of the Conan cast and into the jurisdiction of our good buddy Heiji and his gang! And it revolves around...karuta?

Story (7/10): Conan, Heiji, and their friends are called to Kyoto for a consultation meeting, but quickly get involved in a karuta mystery, with serial bombings, murder, and possible wedding(?!) proposals at the forefront. Things aren't what ...

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Recent Forum Discussion

Poll: Detective Conan Movie 21: The Crimson Love Letter Episode 1 Discussion
Magiarca - May 18, 2017
30 repliesby animefan8800 »»
Jun 12, 2023 5:53 PM
Did you guys watch the movie recently?
yying0303 - Sep 3, 2017
6 repliesby Mayuka »»
Oct 22, 2017 12:41 AM
Detective Conan Movie 21 - Teaser HD + visual
AllenVonStein - Nov 26, 2016
22 repliesby Ran17 »»
May 13, 2017 7:21 AM
Detective Conan Movie 21 official PV
AllenVonStein - Mar 11, 2017
0 repliesby AllenVonStein »»
Mar 11, 2017 4:32 PM