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Crayon Shin-chan: Fast Asleep! The Great Assault on Dreamy World!

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Adapted from the English Wikipedia article Crayon Shin-chan: Fast Asleep! The Great Assault on Dreamy World!, available under CC BY-SA 4.0Updated 10 August 2025
Crayon Shin-chan: Fast Asleep! The Great Assault on the Dreaming World
Company typeAnimated film
IndustryAnimation, Film
Founded2016; 10 years ago (2016)
FounderShin-Ei Animation
Headquarters
Japan
,
Japan
Key people
Wataru Takahashi (director), Hitori Gekidan (screenwriter)
ProductsAnime film
is a 2016 Japanese anime comedy film created by Shin-Ei Animation. Marking the 24th installment in the acclaimed Crayon Shin-chan franchise, it was helmed by director Wataru Takahashi, who also led the 22nd feature, Serious Battle! Robot Dad Strikes Back. The script was collaboratively penned by comedian Hitori Gekidan alongside Takahashi.

Plot

The Nohara family shares a disturbing nightmare centered on a colossal fish, a phenomenon that soon spreads throughout Kasukabe. At Futaba Kindergarten, the arrival of a new transfer student named Saki generates initial excitement, yet she remains emotionally withdrawn. Shinnosuke and his companions venture into a fantastical dreamscape called Yumemi-World, where their desires materialize instantaneously. Nevertheless, the adults’ dreams deteriorate into nightmares as their dream energy diminishes more rapidly than that of the children. Once the children’s dream energy is exhausted, they too become plagued by nightmares, causing turmoil within the Kasukabe Defense Group.

The group forms a friendship with Saki and extends an invitation for her to join them. Kazama grows suspicious that Saki and her family might be draining others’ positive dreams, a suspicion that Saki ultimately confirms. Having lost her mother in an accident, Saki harbors feelings of guilt, believing her mother’s spirit resents her. To shield Saki from nightmares, her father Nubatama Yumehiko constructed Yumemi-World and diverted good dreams from others to sustain her joyful dreams, unintentionally triggering widespread nightmares.

Saki remains silent to avoid distressing her father. Within the dream realm, she carries a stuffed baku, a mythical tapir-like creature in Japanese folklore known for consuming nightmares. Shinnosuke commits to locating this baku but is unsuccessful. When a monstrous entity swallows Saki during the dream, the group embarks on a mission into her nightmare to save her. Despite transforming into various creatures and exerting great effort, they fail to defeat the beast.

Misae joins the confrontation within the dream world, embodying the strength of parental love and protection. She faces down and defeats the monster while comforting Saki, guiding her toward acceptance of her mother’s passing without self-blame. Symbolically, Saki reunites with her younger self, representing emotional healing. To halt further nightmare propagation, Saki and her father decide to relocate overseas.

The Kasukabe Defense Group returns to everyday life but continues correspondence with Saki through letters sent from abroad. They look forward to reuniting with her within their shared dream world, reflecting enduring friendships and hopeful prospects for future escapades.

Cast

Guest cast

Production

This installment explores the realm of dreams, marking the inaugural use of this concept within a Crayon Shin-chan feature film. It also signifies comedian Hitori Gekidan’s debut as a screenwriter for the series, introducing a novel viewpoint to the franchise. Gekidan sought to encapsulate the enigmatic charm of dreams, crafting a narrative that balances excitement, humor, and emotional depth. To satisfy longtime fans and deliver substantial fan service, he dedicated seven to eight months working closely with the production team to perfect the storyline. His approach incorporated perspectives from both parents and children to ensure widespread resonance. Through animation, the movie vividly brings to life an imaginative dreamscape where Shinnosuke’s mischievous behavior intensifies.

In addition, Wataru Takahashi returned to contribute a screenplay for a Crayon Shin-chan film after an eight-year hiatus; his previous involvement was on the 16th movie, Crayon Shin-chan: The Storm Called: The Hero of Kinpoko, which also incorporated dream-related themes.

Opening Theme Song

Ending Theme Song

Insert Song

    • Composed by Ryouhan Fujii

International release

The film debuted in cinemas throughout Malaysia, Indonesia, and Singapore, featuring English subtitles under the title Crayon Shin-chan: Fast Asleep! The Great Assault on the Dreaming World!. It later premiered in India on Sony YAY! on August 18, 2024, where it was presented as Shin-chan In The Dreaming World.

Box office

Upon release, the film opened in second place behind Detective Conan: The Darkest Nightmare, achieving higher opening revenues than its predecessor installment. Over the subsequent two weeks, it accumulated an additional , maintaining its runner-up position. The total domestic box office revenue reached 2.11 billion yen (approximately $20.6 million USD).

The movie was released in China on November 4, 2016, where it earned .

DVD and Blu-Ray Release

Bandai Visual issued both DVD and Blu-Ray editions on November 4, 2016.