Demon Slayer debuted as a manga on Feb 15, 2016 and as an anime on Apr 6, 2019.
Track Demon Slayer by format: manga (Feb 15, 2016), anime (Apr 6, 2019), then movies starting with Mugen Train (Oct 16, 2020 Japan) and Infinity Castle Part 1 (Jul 18, 2025 Japan; Sep 12, 2025 US/Canada).
You may see multiple dates online because releases vary by region, plus there are separate theatrical and streaming windows.
Best watch order is Season 1 → Mugen Train → Entertainment District → Swordsmith Village → Hashira Training → Infinity Castle Part 1 (then the next films when released).
Read the MangaNato article below to learn When was Demon Slayer released and get the full timeline in one clear guide.
When was Demon Slayer released?
Demon Slayer was released as a manga on February 15, 2016, and the TV anime first aired on April 6, 2019.
Most searched milestones:
- Manga debut: February 15, 2016
- Anime Season 1 premiere: April 6, 2019
- First major movie (Mugen Train) Japan release: October 16, 2020
- Hashira Training Arc begins (TV): May 12, 2024
- Infinity Castle Part 1 Japan release: July 18, 2025
- Infinity Castle Part 1 U.S./Canada release: September 12, 2025
If you are asking When was Demon Slayer released, the correct answer depends on the format: the manga began on February 15, 2016, and the anime first aired on April 6, 2019, with later milestones like Mugen Train (Oct 16, 2020) and Infinity Castle Part 1 (2025).
Demon Slayer release timeline by format
The most accurate way to answer When was Demon Slayer released is to match the date to the format you mean: manga, anime, or movies.
This prevents the most common mistake: calling 2019 “the start” when that is only the anime’s start, not the franchise’s first release.
Manga release date
The manga began on February 15, 2016 in Weekly Shōnen Jump. Use this date when you mean “When did Demon Slayer first exist as a series?”
Anime release date
The TV anime premiered on April 6, 2019. Use this date when you mean “When did Demon Slayer first air?”
Movie release dates
The theatrical timeline starts with Mugen Train (Japan: October 16, 2020) and later continues with Infinity Castle Part 1 (Japan: July 18, 2025).
Use movie dates when you mean “When did the new Demon Slayer film come out?”
Demon Slayer seasons and arcs release dates
Demon Slayer’s TV timeline is easiest to track by arc dates, because streaming platforms can label seasons differently.
Here are the clean, commonly referenced TV start dates:
- Season 1: April 6, 2019
- Season 2 era: October 10, 2021 (Mugen Train TV version) and December 5, 2021 (Entertainment District)
- Season 3: April 9, 2023
- Season 4 (Hashira Training): May 12, 2024
If you are writing an evergreen release guide, listing “first aired” dates is usually clearer than listing when a platform added the season in your country.
Demon Slayer movie release dates
Demon Slayer’s biggest “new release” moments often happen in theaters, starting with Mugen Train and now continuing with Infinity Castle.
Mugen Train
Mugen Train released theatrically in Japan on October 16, 2020. After that, international release dates varied widely by market, which is why you may see different answers depending on whether a source is quoting the Japan premiere, a local cinema opening date, or the later home release window.
In practice, the best way to stay accurate is to label the date with the region, for example “Japan release” versus “U.S. release,” instead of treating one date as global.
Infinity Castle Part 1
Infinity Castle Part 1 released in Japan on July 18, 2025, with U.S. and Canada screenings starting September 12, 2025.
This gap is normal for large anime films, since licensing, localization, and theater scheduling can shift timing by territory. Crunchyroll also published a market by market rollout, so some Asia and Oceania dates appear earlier than North America in search results.
If you see multiple dates online, they are usually not contradictions, they are different regional openings or limited early screenings versus the wide public release.
Why you may see multiple release dates online
You see multiple dates because the same title can have a Japan premiere date, a local theatrical date, and later streaming availability.
Some results also include limited early screenings before a wide release, which can add extra dates that do not apply to most viewers.
Best Demon Slayer watch order right now
The simplest watch order is to finish the TV arcs first, then move into the Infinity Castle movies.
Watch order:
- Season 1
- Mugen Train (movie) or Mugen Train TV arc
- Entertainment District Arc
- Swordsmith Village Arc
- Hashira Training Arc
- Infinity Castle Part 1
- Infinity Castle Part 2 and Part 3 when released
FAQs about When was Demon Slayer released
Here are quick answers to the most common questions in FAQs about When was Demon Slayer released, so you can match the correct date to the manga, anime, or movie format.
If you also searched when do Demon Slayer come out, these FAQs clarify why different sources show different release dates.
When was Demon Slayer released for the first time?
The manga debuted on February 15, 2016, which is the franchise’s first release.
When was Demon Slayer released as an anime?
The TV anime first aired on April 6, 2019.
When was Mugen Train released?
It premiered in Japan on October 16, 2020, then rolled out internationally on different dates.
When was Hashira Training released?
The Hashira Training Arc began on May 12, 2024.
When was Infinity Castle Part 1 released?
Japan: July 18, 2025; U.S./Canada: September 12, 2025.
Is Demon Slayer “finished” after these releases?
Not yet, because the finale continues through the remaining Infinity Castle movies.
What date should I use in my blog post title?
Use 2016 if you mean the franchise debut (manga) and 2019 if you mean the anime release; both are correct, but for different formats.
When was Demon Slayer released? The franchise began with the manga in 2016 and reached the anime audience in 2019, with major movie milestones following after that.
For more release timelines, watch orders, and arc guides, explore related Demon Slayer posts on MangaNato.
