The last arc of Demon Slayer will be shown as a film trilogy in theaters. If you still need to watch the anime completely or just want to rewatch it, that’s even possible.
Which film is this about? Demon Slayer is showing the grand finale of the manga not as a season in the anime, but as a film trilogy in theaters. It starts with the first film on September 18, 2025, which shows the first part of the “Infinity Castle” arc. The film has already premiered in Japan in July 2025, where a fan is likely to face a hefty penalty.
Protagonist Tanjiro and his companions must confront Muzan, the highest-ranking demon in the world. Several battles will commence between Muzan’s subordinates and the strongest demon slayers, known as the Hashira. Readers of the manga already know how the battles end, as the story concluded in 2020.
When the other two films will be released is still unknown. We only know that it starts in Germany on September 18. And if you want to watch the complete anime again until then, or experience it for the first time, that is still possible.
Here’s how you can catch up on the entire anime before the theatrical release
What do I need to catch up on? To have the previous storyline in mind, you need to watch all the arcs. Unlike Naruto or One Piece, Demon Slayer has hardly any fillers that are unimportant to the story.
Unfortunately, it is not currently possible to watch all the films that have been shown in theaters on a single streaming service. The films have condensed several episodes of the anime and would have shortened the time needed to watch the complete storyline.
Therefore, you need to catch up on the entire anime with all episodes either on Crunchyroll, Netflix, or as Blu-ray / DVD:
- Season 1 with 26 episodes
- Season 2 with 18 episodes
- Season 3 with 11 episodes
- Season 4 with 8 episodes
In some seasons, there are episodes with extended lengths, usually the first or last episodes of a season. Otherwise, we take an average time of 21 minutes for calculations, as you can skip the intro and outro. This results in a total time of 23 hours and 50 minutes.
How long do I need to watch per day? Based on this, you would need to watch about 2 hours and 10 minutes each day until the theatrical release to be ready. However, you need to demonstrate good endurance, as if you miss even one day, you will have to watch over 4 hours the next day.
Why should I do this? The airing of Demon Slayer has spanned over the last few years. To be up to date for the movie and have all of Tanjiro’s experiences fresh in your memory, it would be a good idea to rewatch the anime.
However, it may also be that you have missed the hype surrounding Demon Slayer so far, but now want to jump in. That would also be possible and is more a matter of ambition.
Besides Demon Slayer, there is another film from a well-known anime that is set to be released this year. Additionally, another film that fans of a classic can look forward to is also coming. You can find all important dates for the cinema year 2025 on MeinMMO: All anime coming to theaters in Germany in 2025
