The short answer is no; The Seven Deadly Sins Movie 1: Prisoners of the Sky is not considered strictly canon to the main manga plot written by Nakaba Suzuki. While series creator Nakaba Suzuki provided rough concept art and original character designs for the film, the narrative itself contradicts the official manga timeline and is treated by fans and official sources as an anime-original side story.
Navigating the canonicity of anime films can get confusing, especially when major franchises loop creators into promotional material. Let us break down why Prisoners of the Sky sits outside the official continuity, where it fits if you still want to watch it, and how it compares to later films in the franchise.
Why Prisoners of the Sky Breaks Continuity
The primary reason Prisoners of the Sky falls out of canon is its impossible placement within the manga's strict chronology. The movie was released in Japanese theaters in August 2018, right between the second and third seasons of the anime adaptation.
If you try to map its events directly onto the manga timeline, major inconsistencies pop up: Further insight on the subject has been provided by BBC.
- The Team Composition: All seven members of the deadly sins are assembled, active, and operating together smoothly. In the manga and anime, the group faces a rapid succession of tragedies, separations, and power shifts right after the Revival of the Commandments arc. There is simply no peaceful window where this specific lineup could travel to a floating sky island.
- Power Scaling and Abilities: Characters display specific gear, magic mastery, and forms that clash with where they should be developmentally during that phase of the story.
- Manga Omission: None of the events, villains, or locations from the film are ever referenced or acknowledged in the original manga chapters. In long-running shonen manga, canon films usually leave subtle breadcrumbs or character mentions in the source material. This movie leaves none.
The Creator Involvement Paradox
A common source of confusion stems from Nakaba Suzuki's heavy involvement in the production. Suzuki supplied over 300 pages of rough drafts, character concepts for the celestial-winged race, and promotional illustrations.
However, in the anime industry, original creators frequently supervise theatrical projects to ensure character designs stay on-model and the tone matches the source material. Supervising or drafting character designs does not automatically make a high-budget theatrical side story part of the formal canon. Think of it as an official, high-quality filler arc scaled up for the big screen rather than a mandatory piece of lore.
Where to Watch It Chronologically
Even though the film doesn't impact the main plot, it's an entertaining watch for fans who want extra time with the characters. If you plan to slot it into your watch marathon without breaking your immersion too badly, the best viewing window is right after finishing season two (The Seven Deadly Sins: Revival of the Commandments).
Watching it at this juncture ensures you understand everyone's baseline abilities and relationships before the heavier, more fragmented narrative arcs of season three take over. You can find official streaming options and details on platforms like Netflix where the library is hosted.
How Movie 1 Compares to Later Franchise Films
To understand why Prisoners of the Sky is viewed as non-canon, it helps to look at how subsequent films in the franchise were handled by the author and studios:
- Cursed by Light (Movie 2): Released in 2021, this film is widely accepted as fully canon. It was written with direct oversight of the post-series epilogue material, dealing with the aftermath of the final season.
- Grudge of Edinburgh (Parts 1 and 2): These 3D CGI films focus on Tristan and serve as official canonical bridges leading directly into the sequel series, Four Knights of the Apocalypse, penned by Nakaba Suzuki.
Unlike these later cinematic entries, Prisoners of the Sky remains a standalone adventure that you can completely skip without missing a single beat of Meliodas and Elizabeth's overarching journey.
Frequently Asked Questions
Is Prisoners of the Sky required viewing to understand Season 3?
No. You can skip the movie entirely and transition straight from season two to season three without losing any plot context, character development, or world-building details.
Did Nakaba Suzuki write the script for the first movie?
No. While Suzuki provided conceptual art and character designs, the screenplay was written by Uotake, an anime scriptwriter, rather than the manga author himself.
Are any characters from the movie mentioned later?
No characters introduced exclusively in Prisoners of the Sky—such as the antagonists from the Sins of the Sky army—ever reappear or receive a mention in the official manga or subsequent canonical anime projects.
Do other Seven Deadly Sins movies count as canon?
Yes, subsequent projects like Cursed by Light and the Grudge of Edinburgh duology tie directly into the official timeline and the sequel generation. Only the first movie occupies this detached, non-canon space.
