New Doraemon Film Trailer Reveals Sumika Theme Song

A new special trailer has been released for Doraemon: Nobita and the New Castle of the Undersea Devil, highlighting the theme song performed by Japanese band Sumika. The preview offers fresh footage from the film and emphasizes the adventurous tone of the underwater story. In the movie, Doraemon and Nobita embark on a summer ocean camping trip with their friends, using futuristic gadgets to explore beneath the sea. Their journey leads them to discover a mysterious sunken ship and encounter a young undersea resident named El. As tensions grow between humans and the underwater civilization known as the Mu Federation, the group becomes involved in a larger crisis surrounding the ominous Devil Rock Castle. The film reimagines a classic Doraemon adventure for modern audiences.

Crunchyroll, Mikikazu Komatsu – Doraemon: Nobita and the New Castle of the Undersea Devil Anime Film Shares Special Trailer Featuring Sumika Theme Song – 4th March 2026