The beloved robot cat Doraemon is set to embark on another cinematic adventure with the announcement of the 2026 film, officially titled Doraemon the Movie: Nobita and the New Castle of Devil’s Undersea Castle. This 45th installment in the popular franchise is confirmed to premiere in theaters across Japan in March 2026.
The upcoming feature is a remake of the classic 1983 film, Doraemon: Nobita and the Castle of the Undersea Devil, promising to introduce a new generation to a thrilling deep-sea fantasy.
A Return to the Depths: Remaking a Classic Adventure
Doraemon the Movie: Nobita and the New Castle of Devil’s Undersea Castle reimagines one of Doraemon’s most iconic journeys, more than four decades after its original release. The 1983 film captivated audiences with its blend of friendship, courage, and undersea fantasy, and the remake aims to preserve this emotional depth while offering breathtaking new animation and modern storytelling.
The original story saw Nobita and friends venturing into mysterious undersea kingdoms, encountering powerful guardians, and discovering the legendary Devil’s Castle hidden deep beneath the waves, a plot loosely based on the Western myth of Atlantis. The tagline for the new film’s teaser visual reads, “10,000 meters beneath the sea. There is still a world on Earth that no one knows,” hinting at the expansive and unknown aquatic world awaiting the characters.
Production Details and Key Creative Staff
Tetsuo Yajima is directing the 2026 film, marking his first time helming a Doraemon feature film. Yajima has a significant history with the franchise, having been involved in the Doraemon (2005 TV series) and contributing to previous films such as Nobita’s New Great Adventure into the Underworld (2007) and Nobita’s Earth Symphony (2024). The screenplay for the new movie is penned by Isao Murayama, who has previously written scripts for several episodes of the Doraemon series.
Premiere Information and Unannounced Details
While the film is officially slated for a March 2026 release in Japan, a specific premiere date beyond the month has not been publicly announced. Details regarding guest voice actors for Doraemon the Movie: Nobita and the New Castle of Devil’s Undersea Castle have also not yet been revealed. The main voice cast for the film includes Wasabi Mizuta as Doraemon, Megumi Ohara as Nobita, Yumi Kakazu as Shizuka, Subaru Kimura as Gian, and Tomokazu Seki as Suneo. These announcements often come closer to the film’s theatrical debut.
