Trailer: 'Doraemon: Nobita and the New Castle of the Undersea Devil'

‘Doraemon: Nobita and the New Castle of the Undersea Devil’ (映画ドラえもん新・のび太の海底鬼岩城) is a 2026 Japanese animated adventure directed by Tetsuo Yajima.

The film, the 45th Doraemon feature, sees Doraemon guiding Nobita into a mysterious deep-sea civilisation where dormant machines and mounting danger push them far beyond their ordinary adventures. The voice cast includes Wasabi Mizuta, Megumi Ohara, Yumi Kakazu, Subaru Kimura, and Tomokazu Seki.

Synopsis: Nobita joins Doraemon and their friends on an undersea journey made possible by futuristic gadgets, only to stumble upon a secret ocean kingdom haunted by the legacy of an ancient conflict. As tensions grow and a long-sealed super-weapon threatens to awaken, the group must navigate fragile alliances, uncover hidden truths about the past, and find the courage to protect both the sea and the surface world from disaster. [© Far East Films]

‘Doraemon: Nobita and the New Castle of the Undersea Devil’ opens in Japanese cinemas on February 27, 2026.