is a 2026 Japanese animated science fantasy film. It is the 45th Doraemon feature film and serves as a remake of the 1983 film Doraemon: Nobita and the Castle of the Undersea Devil. It is directed by Tetsuo Yajima from a screenplay by Isao Murayama. It was released in theaters in Japan on 27 February 2026.

Plot

Disagreeing over where to go camping during summer vacation, Nobita and his friends decide to camp in the middle of the ocean at Doraemon's suggestion. Using their secret gadgets, the "Underwater Buggy" and the "Tekio Light," the five enjoy their undersea camping adventure, encountering various creatures. After discovering a sunken ship, they meet a mysterious young man named El. He turns out to be an "undersea person" who lives in the Mu Federation, which spreads under the sea. The undersea people hate people on land and cannot trust Nobita and his friends. Then they receive news that "Devil's Rock Castle...has begun to move!!" What exactly is this "Devil's Rock Castle" that the undersea people fear...? With faith in their friends, they set off on a great adventure that will determine the fate of the Earth.

Cast

CharacterJapanese voice actor Doraemon Wasabi Mizuta Nobita Nobi Megumi Ōhara Shizuka Minamoto Yumi Kakazu Takeshi Gōda Subaru Kimura Suneo Honekawa Tomokazu Seki Eru Shōya Chiba Underwater Buggy Ryō Hirohashi Mu Federation Soldier Airi Taira Poseidon Takayuki Sugō Mu Prime Minister Masashi Ebara Tamako Nobi (Nobita's mother) Kotono Mitsuishi Nobisuke Nobi (Nobita's father) Yasunori Matsumoto

Production Planning and Staffing Tetsuo Yajima was selected as the director. He has been largely involved in the Doraemon (2005 TV series) and in the production of films such as Nobita's New Great Adventure into the Underworld (2007), Nobita and the New Steel Troops: Winged Angels (2011), and Nobita's Earth Symphony (2024), with the movie marking his first time directing a Doraemon film. He commented:

The screenplay was written by Isao Murayama, making his first appearance in the film series. Since 2023, Murayama has written the scripts for several episodes of the Doraemon television anime series. Release It was released in theaters in Japan on 27 February 2026. It was the first film in series to release in 4DX.

Reception Box office Doraemon: New Nobita and the Castle of the Undersea Devil It has grossed $25,880,020 so far and was number one at the Japanese box office for the first six weeks.

See also List of Doraemon films

References

External links