Doraemon: Castle of the Undersea Devil is one of the upcoming animated movies that has attracted attention from Doraemon fans in India. The movie takes Doraemon, Nobita and their friends on an underwater adventure filled with mystery, friendship and danger.
The Doraemon: Castle of the Undersea Devil movie release date in India is October 2, 2026. The movie is scheduled to arrive in Indian cinemas in Hindi, Tamil and Telugu, giving fans across different regions an opportunity to watch the adventure on the big screen.
The Japanese version of the movie was released earlier, on February 27, 2026. The 2026 film is also a new version of the classic Doraemon story Nobita and the Castle of the Undersea Devil, originally released in 1983.
If you are searching for the Doraemon Castle of the Undersea Devil release date, cast, story, languages, director and other movie details, here is everything you need to know.
Doraemon: Castle of the Undersea Devil Release Date in India
The Doraemon: Castle of the Undersea Devil release date in India is October 2, 2026.
The movie is scheduled for a theatrical release across India. It is expected to be available in Hindi, Tamil and Telugu, making it accessible to a wide audience.
Doraemon: Castle of the Undersea Devil Release Date
| Movie Detail | Information |
| Movie Name | Doraemon: New Nobita and the Castle of the Undersea Devil |
| India Release Date | October 2, 2026 |
| Japan Release Date | February 27, 2026 |
| Release Format | Theatrical |
| Languages in India | Hindi, Tamil and Telugu |
| Original Language | Japanese |
| Genre | Animation, Adventure, Comedy, Family, Fantasy |
| Director | Tetsuo Yajima |
| Screenplay | Isao Murayama |
| Music | Takayuki Hattori |
| Studio | Shin-Ei Animation |
| Runtime | Approximately 102 minutes |
The Indian theatrical date and language information have been officially reported, while the film’s Japanese release and production details are documented in current movie information.
When Did Doraemon: Castle of the Undersea Devil Release in Japan?
One point that can cause confusion is that the movie has two important release dates depending on the country.
The Japanese theatrical release took place on February 27, 2026. The Indian theatrical release is scheduled for October 2, 2026.
This means that although Indian audiences will be able to watch the movie in cinemas later in the year, the film itself is not a completely unreleased project internationally.
The movie was first released in Japan before its planned theatrical arrival in India.
Is Doraemon: Castle of the Undersea Devil a New Movie?
Yes. The 2026 film is a new Doraemon feature film, but it is also a remake of the 1983 Doraemon movie Nobita and the Castle of the Undersea Devil.
The new version revisits the underwater adventure while presenting it with modern animation and a new production approach.
The 2026 movie is the 45th Doraemon feature film and is directed by Tetsuo Yajima. The screenplay is written by Isao Murayama.
For longtime Doraemon fans, this makes the movie interesting for another reason. It combines a familiar story concept with a new animated presentation for today’s audience.
What Is Doraemon: Castle of the Undersea Devil About?
The movie takes Doraemon, Nobita and their friends away from their usual surroundings and into the mysterious world beneath the ocean.
The adventure begins when Nobita and his friends decide to go camping in the middle of the sea. With the help of Doraemon’s gadgets, they are able to explore the underwater world and experience an unusual camping trip beneath the waves.
Their adventure changes when they encounter an underwater civilization and a mysterious boy named Eru.
The group learns about the Mu Federation, an underwater society whose people have a difficult relationship with those living on land. The situation becomes more serious when they discover information about the mysterious Devil’s Rock Castle.
What starts as an exciting underwater adventure gradually turns into a much bigger mission.
The main story includes:
- An underwater camping adventure
- Doraemon’s futuristic gadgets
- Nobita and his friends exploring the ocean
- A mysterious underwater civilization
- The Mu Federation
- A new character named Eru
- The mysterious Devil’s Rock Castle
- A threat that could affect the Earth
- Friendship and teamwork between the characters
The film’s story therefore combines the familiar comedy and friendship of Doraemon with adventure and fantasy elements.
Doraemon: Castle of the Undersea Devil Cast
The movie features the familiar main Doraemon characters, with their Japanese voice roles performed by established members of the franchise’s voice cast.
Main Voice Cast
| Character | Voice Actor |
| Doraemon | Wasabi Mizuta |
| Nobita | Megumi Ōhara |
| Shizuka | Yumi Kakazu |
| Gian | Subaru Kimura |
| Suneo | Tomokazu Seki |
| Eru | Shōya Chiba |
Wasabi Mizuta voices Doraemon, while Megumi Ōhara returns as Nobita. Yumi Kakazu, Subaru Kimura and Tomokazu Seki provide the voices for Shizuka, Gian and Suneo respectively.
The movie also introduces supporting characters connected with the underwater world, expanding the story beyond the regular group of Doraemon characters.
Who Is the Director of Doraemon: Castle of the Undersea Devil?
Tetsuo Yajima is the director of Doraemon: New Nobita and the Castle of the Undersea Devil.
The screenplay has been written by Isao Murayama, while Takayuki Hattori has composed the music.
The film is produced by Shin-Ei Animation, the animation studio associated with the Doraemon film series.
What Languages Will Doraemon: Castle of the Undersea Devil Release In India?
The movie is scheduled to release in three Indian languages:
- Hindi
- Tamil
- Telugu
This multilingual release is particularly significant because Doraemon already has a large television audience in India.
The theatrical release will allow fans who have traditionally watched Doraemon on television to experience one of the character’s feature-film adventures in cinemas.
Will Doraemon: Castle of the Undersea Devil Release in Hindi?
Yes. The movie is scheduled to release in Hindi in India.
Will Doraemon: Castle of the Undersea Devil Release in Tamil?
Yes. Tamil is among the announced Indian language versions.
Will Doraemon: Castle of the Undersea Devil Release in Telugu?
Yes. The movie is also scheduled to release in Telugu.
Why Is the 2026 Doraemon Movie Special?
Doraemon has been a familiar character for Indian viewers for many years, particularly among children and families. However, the 2026 movie represents an important step because it is receiving a nationwide theatrical release in India.
The movie is also based on one of the older stories from the Doraemon film series.
That gives the film two different attractions.
For longtime fans
People who already know Doraemon may enjoy seeing a familiar adventure presented with modern animation.
For younger viewers
New viewers can experience the story as a standalone animated adventure featuring Doraemon, Nobita, Shizuka, Gian and Suneo.
For families
The combination of comedy, fantasy, adventure and friendship makes the movie suitable for a broad family audience.
The Indian theatrical release has been described as Doraemon’s first nationwide big-screen outing in the country, following the character’s long popularity on television.
Doraemon: Castle of the Undersea Devil Movie Runtime
The movie has a runtime of approximately 102 minutes, or around 1 hour and 42 minutes.
This gives the film enough time to develop its underwater setting, introduce the characters connected with the Mu Federation and build the central adventure around Devil’s Rock Castle.
Doraemon: Castle of the Undersea Devil Genre
The movie combines several genres rather than focusing on only one type of storytelling.
Its major genres include:
- Animation
- Adventure
- Comedy
- Family
- Fantasy
- Science fantasy
The underwater setting gives the movie a different visual environment from many of Doraemon’s everyday adventures.
Instead of simply dealing with school, home or neighborhood situations, Doraemon and Nobita are placed in an unfamiliar underwater world where they have to discover what is happening around them.
Doraemon: Castle of the Undersea Devil vs the 1983 Movie
The 2026 movie is connected to the earlier 1983 Doraemon film with the same basic story concept.
However, the newer movie is not simply the old film being shown again. It is a modern remake created for a new generation.
| Feature | 1983 Version | 2026 Version |
| Story concept | Underwater adventure | Underwater adventure |
| Main character | Doraemon | Doraemon |
| Central group | Doraemon and friends | Doraemon and friends |
| Setting | Underwater world | Underwater world |
| Format | Animated feature | Modern animated feature |
| Connection | Original film | Remake |
The 2026 version is officially described as a remake of the 1983 film.
What Can Fans Expect From the Movie?
While the exact experience will depend on the viewer, the movie’s premise points toward several familiar Doraemon elements.
1. Secret gadgets
Doraemon’s gadgets are an important part of the franchise, and the underwater adventure gives the characters new ways to explore their surroundings.
2. Friendship
Nobita, Doraemon and their friends often find themselves in difficult situations where teamwork becomes important.
3. Underwater adventure
The ocean provides a completely different environment for the characters to explore.
4. Mystery
The mysterious underwater civilization and Devil’s Rock Castle add a mystery element to the story.
5. Family entertainment
The movie combines adventure with comedy and fantasy, making it suitable for children and family audiences.
Where Can You Watch Doraemon: Castle of the Undersea Devil?
For Indian audiences, Doraemon: Castle of the Undersea Devil is scheduled for a theatrical release on October 2, 2026.
The movie is expected to be shown in cinemas across India in Hindi, Tamil and Telugu. Current theatrical listings also show the October 2 release date.
At present, an official OTT release date should not be assumed unless one is announced separately.
Therefore, anyone looking for the Doraemon Castle of the Undersea Devil OTT release date should wait for an official announcement rather than relying on unconfirmed dates circulating online.
Doraemon: Castle of the Undersea Devil Movie Release Date – Important Details
Here is a quick summary of the information covered above:
| Question | Answer |
| When is Doraemon: Castle of the Undersea Devil releasing in India? | October 2, 2026 |
| When did it release in Japan? | February 27, 2026 |
| Is it releasing in theatres? | Yes |
| Which Indian languages are announced? | Hindi, Tamil and Telugu |
| Is it a remake? | Yes, of the 1983 Doraemon movie |
| Who directed the movie? | Tetsuo Yajima |
| Who voices Doraemon? | Wasabi Mizuta |
| Who voices Nobita? | Megumi Ōhara |
| How long is the movie? | Approximately 102 minutes |
| What is the movie about? | Doraemon, Nobita and their friends’ underwater adventure |
Frequently Asked Questions
When is Doraemon: Castle of the Undersea Devil releasing in India?
Doraemon: Castle of the Undersea Devil is scheduled to release in Indian cinemas on October 2, 2026.
What is the Doraemon: Castle of the Undersea Devil release date?
The movie’s India theatrical release date is October 2, 2026. Its Japanese theatrical release took place earlier on February 27, 2026.
Is Doraemon: Castle of the Undersea Devil a remake?
Yes. The 2026 movie is a remake of the 1983 Doraemon film Nobita and the Castle of the Undersea Devil.
Is Doraemon: Castle of the Undersea Devil releasing in Hindi?
Yes. The movie is scheduled to release in Hindi, along with Tamil and Telugu versions in India.
Is Doraemon: Castle of the Undersea Devil releasing in Tamil?
Yes. Tamil is one of the Indian languages announced for the theatrical release.
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Final Word
Doraemon: Castle of the Undersea Devil is set to bring Doraemon and his friends to Indian cinemas on October 2, 2026. The movie will be available in Hindi, Tamil and Telugu, while its Japanese theatrical release took place on February 27, 2026.
The film stands out because it combines a classic Doraemon underwater adventure with a modern animated presentation. It is also a remake of the 1983 movie, giving longtime fans a chance to revisit a familiar story while introducing the adventure to a newer generation.
With Doraemon, Nobita, Shizuka, Gian and Suneo heading into an unfamiliar underwater world, the movie promises a mix of friendship, comedy, mystery, fantasy and adventure.
For Indian fans searching for the Doraemon: Castle of the Undersea Devil movie release date, the key date to remember is October 2, 2026.