Infinity Castle Part 1 just finished its theatrical run and is now streaming on Crunchyroll — and if you haven't caught up on Demon Slayer yet, your social feeds are about to make that a problem.
This guide tells you exactly where to start, what order to watch everything in, whether to watch the Mugen Train movie or the TV arc, and where every entry is streaming right now. No filler warnings needed — Demon Slayer has zero filler episodes, so every minute counts.
The Complete Demon Slayer Watch Order (At a Glance)
Here's the full list before we break each entry down:
- Demon Slayer Season 1 — Tanjiro Kamado, Unwavering Resolve Arc (26 episodes)
- Demon Slayer the Movie: Mugen Train — (1 hr 57 min) or Season 2, Episodes 1–7
- Demon Slayer Season 2: Entertainment District Arc — (11 episodes, start at Ep. 8)
- Demon Slayer Season 3: Swordsmith Village Arc — (11 episodes)
- Demon Slayer Season 4: Hashira Training Arc — (8 episodes)
- Demon Slayer: Infinity Castle — Part 1 streaming now; Parts 2 & 3 TBA
Total TV runtime: 63 episodes. Add the Mugen Train movie (~2 hrs) and Infinity Castle Part 1 (~2.5 hrs) and you're looking at a weekend-and-a-half binge before the next part drops.
Season 1 — Tanjiro Kamado, Unwavering Resolve Arc (26 Episodes)
Where to watch: Crunchyroll, Netflix, Amazon Prime Video
This is where everyone starts — and it does not waste your time. Episode 1 hits fast, episode 19 ("Hinokami") redefined what anime fight sequences could look like, and by episode 26 you'll understand exactly why this series took over the world.
Season 1 covers Tanjiro's origin: his family is slaughtered by demons, his sister Nezuko is turned into one, and he joins the Demon Slayer Corps to find a cure and avenge his family. Along the way you meet Zenitsu and Inosuke — two of the most memorable supporting characters in modern shonen — and get your first glimpse at the terrifying Upper Rank demons serving under Muzan Kibutsuji.
What it covers: Final Selection arc through the Spider Mountain arc (manga chapters 1–53, approximately volumes 1–6).
Don't skip it. Season 1 builds the emotional foundation that makes every later arc land harder.
Mugen Train: Movie or TV Arc?
Short answer: Watch the movie. Skip Season 2 episodes 1–7.
The Mugen Train arc was first adapted as a feature film (released 2020, became the highest-grossing anime film ever at the time), then re-adapted as the first seven episodes of Season 2. The content is largely the same — the movie has slightly better pacing and a few additional character scenes that got cut from the TV version.
Our recommendation: watch the movie for the full cinematic experience. When you move on to Season 2, skip straight to Episode 8 (the start of the Entertainment District Arc). You're not missing anything.
If you're watching everything on Crunchyroll, you can find the movie there. Physical copy: Mugen Train on Blu-ray at Amazon.
What it covers: The Flame Hashira Rengoku joins Tanjiro's squad on a demon-haunted train. Upper-Rank Three Akaza arrives. One of anime's most gut-wrenching endings. (Manga chapters 54–69, volumes 7–8.)
Season 2 — Entertainment District Arc (11 Episodes)
Where to watch: Crunchyroll, Netflix, Amazon Prime Video
Start at Episode 8 if you've already watched the Mugen Train movie.
This is where Demon Slayer went from "great anime" to "cultural event." The Sound Hashira Tengen Uzui — flashy, dual-wielding, absolutely unhinged — leads Tanjiro, Zenitsu, and Inosuke undercover into Yoshiwara's Entertainment District to hunt two of the Upper-Rank Six demons: the sash demon Daki and her older brother Gyutaro.
The final two episodes are among the best-animated sequences ever produced — ufotable essentially showed the entire industry what's possible. If Mugen Train got you hooked, Entertainment District will make the addiction permanent.
What it covers: Manga chapters 70–99 (volumes 9–11). Introduces the scale of the Upper Ranks properly for the first time.
Season 3 — Swordsmith Village Arc (11 Episodes)
Where to watch: Crunchyroll, Netflix, Amazon Prime Video
Tanjiro travels to the hidden Swordsmith Village to get a new Nichirin blade, but Upper-Rank Four (Hantengu) and Upper-Rank Five (Gyokko) have the same destination in mind. Two Hashira — the Love Hashira Mitsuri Kanroji and the Mist Hashira Muichiro Tokito — are already there.
Swordsmith Village is the arc where the side characters finally get their moment. Muichiro's backstory is brutal and earned, Mitsuri gets one of the best fight sequences of the entire series, and Tanjiro takes a significant step forward in his mastery of Hinokami Kagura. The season finale is a two-part special that goes hard right to the final frame.
What it covers: Manga chapters 100–127 (approximately volumes 12–15). Upper-Rank Four and Five eliminated.
Season 4 — Hashira Training Arc (8 Episodes)
Where to watch: Crunchyroll, Netflix, Amazon Prime Video
The shortest season — 8 episodes — and the one that functions almost entirely as setup for the final arc. With only four Upper Ranks remaining, Kagaya Ubuyashiki orders all Demon Slayers to train under each of the surviving Hashira in preparation for the inevitable final confrontation with Muzan.
Don't let the "setup arc" label fool you: Season 4 has some of the best character-building in the entire run. Every training sequence reveals something new about a Hashira's character and philosophy. Tomioka's arc in particular reframes almost everything you thought you knew about him.
Season 4 ends with a cliffhanger that goes directly into Infinity Castle. Do not pause between finishing it and starting the movie.
What it covers: Manga chapters 128–136 (approximately volumes 15–16). Tanjiro achieves Transparent World. Muzan makes his move.
Demon Slayer: Infinity Castle — Part 1 Is Streaming Now
Where to watch: Crunchyroll (streaming now)
The final arc of Demon Slayer is being released as a film trilogy. Part 1 completed its theatrical run on April 9, 2026, and is now streaming on Crunchyroll. Parts 2 and 3 do not yet have release dates — the earliest estimate puts Part 2 in 2027.
We're keeping spoilers minimal here: the Infinity Castle arc is where every storyline in the series converges and pays off. Muzan attacks. The Hashira respond. The scale of ufotable's animation ambition goes to places the TV series couldn't. It earns every minute of its runtime.
If you've made it through all four seasons, this is the reason the journey was worth it. Watch it at the highest resolution your setup allows.
Is There Any Filler in Demon Slayer?
No. Demon Slayer has zero filler episodes. Every episode adapts source material from Koyoharu Gotouge's manga. This is one of the cleanest adaptation track records in modern shonen — no filler arcs, no recap episodes stuffed with flashbacks, no watching the same punch from eight angles for three weeks. Every episode moves.
The only "filler-adjacent" content is the first seven episodes of Season 2 (the Mugen Train TV arc), which cover the same story as the 2020 film. If you've watched the movie, skip those seven episodes and go straight to Episode 8.
Where to Watch Demon Slayer in 2026
Availability varies by region, but here's where everything is in the US:
- Crunchyroll — All four seasons + Mugen Train movie + Infinity Castle Part 1. The complete experience, one platform.
- Netflix — Seasons 1–4 (all 63 episodes). Movie and Infinity Castle not available as of June 2026.
- Amazon Prime Video — All seasons available to purchase or rent. Not included in Prime.
- Funimation — Merged into Crunchyroll. If you have an old Funimation account, it redirects there.
Bottom line: Crunchyroll is the only platform that has everything — all seasons, the movie, and Infinity Castle. Start there.
If you want physical media, the manga is an excellent companion read — the art hits different when you're not watching it at 60fps. Demon Slayer Volume 1 on Amazon is the place to start.
Start Watching — Then Come Back Here
Demon Slayer is as close to perfect binge-watch architecture as anime gets. No filler, escalating animation quality, and a story that pays off every emotional investment you make along the way. Season 4 into Infinity Castle is one of the best consecutive runs in recent memory.
While you're catching up, come hang in the Geeky Inc Discord — we've got an active Demon Slayer channel where people are already deep into Infinity Castle reactions. No spoilers unless you want them.
And if you're a fan who also prints: check out the Geeky Inc shop — Wave 1 blind boxes are live now, with more anime-inspired drops coming.
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