Iruma’s heading back to the Netherworld this April. After three seasons of demon school chaos, Welcome to Demon School! Iruma-kun Season 4 has an April 2026 release window locked in. No exact premiere date yet as I first write this, but the timing puts it squarely in the spring 2026 lineup alongside the season’s other heavy hitters.
Updated June 2026: the window became a date, the date became a premiere, and we’re now ten episodes deep. Season 4 debuted April 4, 2026 and is airing weekly on Crunchyroll with a confirmed 24-episode, two-cour run scheduled straight through to September 12. Episode 11 lands this Saturday. Everything below has been updated to where things actually stand, so this page works whether you’re already current or just now deciding to catch up.
If you’ve been tracking the spring 2026 anime schedule, you know April turned out exactly as stacked as advertised. Iruma-kun Season 4 joined the wave of sequels and originals fighting for your watch time, and it’s quietly been one of the most consistent things airing. Here’s everything confirmed, plus a catch-up plan if you’re behind.
April 2026 Release Window: Confirmed, Then Delivered
When this post first went up in February, both LiveChart and MyAnimeList listed Mairimashita! Iruma-kun Season 4 with an April 2026 air date and nothing more specific. I guessed early-to-mid month based on how continuing NHK series usually behave.
Updated June 2026: the official date landed in early March, and it was even earlier than I guessed. Season 4 premiered Saturday, April 4, 2026, with new episodes dropping Saturdays at 2:25 a.m. PT / 5:25 a.m. ET for international viewers. Better still, the announcement confirmed this is a half-year run: 24 episodes across two continuous cours, no seasonal split, wrapping September 12, 2026. That’s the longest single run the series has had since Season 1, and it tells you how much story the Music Festival arc actually contains. Animation is once again handled by Bandai Namco Pictures, the studio behind all three previous seasons, so the show looks exactly like you remember, in the best way.
For a family-friendly shonen comedy to get a committed two-cour block in a season this crowded says a lot about how reliably this franchise performs. The spring 2026 anime forecast called Iruma-kun one of the safest bets of the season. So far, no notes.
What’s Season 4 About? The Music Festival Arc
Season 4 adapts the Music Festival arc, one of the manga’s most beloved storylines. The demon students of Babyls are preparing for a massive school event where music takes center stage, and for the misfit class the stakes are personal: the path to promotion runs directly through the festival. Iruma and his classmates have to tackle band formation, instrument training, and all the drama that comes with putting on a school-defining performance while being, collectively, the strangest fourteen students in the building.
The arc’s a fan favorite for good reason. It shifts focus from combat rankings to creative collaboration, giving underused characters room to shine. Expect Clara’s chaos energy, Azz’s overprotective devotion, and Iruma’s accidental genius to collide in new ways. The Music Festival arc also pushes Iruma’s relationship with Ameri forward, so shippers have plenty to look forward to.
Updated June 2026, now that the first ten episodes are out: the adaptation is taking its time, and that’s a compliment. The early episodes lean into the preparation comedy hard. There’s an entire early-season set piece built around Iruma versus a piano, which sounds like a throwaway gag and is instead exactly the kind of bit this show turns into character development. That’s the Iruma-kun trick, and it has always been the trick: start with the dumbest possible premise, play it completely straight, and land it somewhere surprisingly sincere. A human kid sold to a demon by his garbage parents accidentally becomes the most loved student in the Netherworld. Of course the piano episode has feelings in it.
With 24 episodes to work with, the pacing suggests the season intends to do the full festival properly rather than sprinting to the performance. If you’re manga-only, you already know how wild the back half gets. If you’re anime-only, buckle up for demon rock bands and at least one emotional breakdown per episode. The show has earned the runway.
Who to Watch This Season
A festival arc is an ensemble arc, and this cast is the deepest bench in demon-comedy television. A few characters worth keeping your eye on as the season rolls:
Clara Valac. The class chaos generator finally gets a storyline where her particular energy is an asset instead of a delightful liability. Music is the one arena where “completely unpredictable and physically incapable of embarrassment” reads as star power. Clara episodes have historically been either the funniest or the most quietly devastating in any given season, sometimes both within five minutes, and a performance arc is built for her.
Alice Asmodeus. Azz’s whole identity is being the best at everything in service of Iruma, and the festival quietly asks what happens when devotion meets a discipline you can’t perfect through pride and fire magic. The show has been poking at the difference between serving someone and standing beside them since Season 2, and this arc keeps poking.
Ameri Azazel. The student council president’s slow-burn whatever-this-is with Iruma has been advancing at a pace that makes glaciers look reckless, and the Music Festival is famous among manga readers partly for what it does with the two of them. I’ll say nothing else. The shippers in the audience already know, and the rest of you will find out on a Saturday morning sometime this summer.
Kalego-sensei. The misfit class homeroom teacher remains the franchise’s best running joke: a deeply serious demon professionally shackled to fourteen walking disasters. Every school event multiplies his suffering, and a school event with amplifiers is a gift to all of us.
Why This Show Keeps Working
Three seasons in, it’s worth saying plainly why Iruma-kun outlasts the seasonal churn while flashier shows come and go. The premise is a joke, but the show’s engine is sincerity. Iruma was a kid nobody ever protected, and the entire series is him slowly learning what it feels like when people actually want him around. Every arc, however ridiculous the surface, the ranked battles, the amusement park, now the band practice, is secretly about that. The comedy earns the quiet moments, and the quiet moments make the comedy land harder.
That’s also why it works across age gaps. Kids watch it for Clara eating things she shouldn’t and demons doing musical numbers. Adults watch it and notice they’re rooting for a neglected kid getting unconditionally adopted by an entire dimension. Both audiences are correct.
Where to Watch Iruma-kun Season 4
When this post first went up, streaming was the big unanswered question, since Seasons 1-3 streamed on Crunchyroll but nothing was official for Season 4.
Updated June 2026: it’s Crunchyroll, confirmed and then some. Season 4 is simulcasting on Crunchyroll across North America, South America, Europe, Oceania, India, and most other regions outside Asia. The genuinely notable part: Season 4 launched with a simultaneous English dub, meaning the dub episodes arrive alongside the Japanese broadcast each week instead of on the usual weeks-long delay. That’s a first for this franchise, and it matters more for Iruma-kun than for most shows, because this is exactly the kind of series people watch with kids who can’t read subtitles at demon-comedy speed.
All three previous seasons remain on Crunchyroll as well, which makes the catch-up path painless: one app, one subscription, sixty-five episodes, no scavenger hunt.
Behind on the Series? Here’s the Catch-Up Map
If Season 4 is your reason to finally start this show, you have some runway: 65 episodes across three seasons. Here’s what each one actually is, so you know what you’re signing up for.
Season 1 (23 episodes, 2019-2020). The setup: Iruma Suzuki, a 14-year-old human boy with pathological people-pleasing skills and the worst parents in anime, gets sold to the demon Sullivan, who doesn’t want to eat him. He wants a grandson. Iruma enrolls at Babyls demon school, where being discovered as human means being eaten, and where he immediately, accidentally, starts collecting devoted friends and academic achievements. The first season builds the misfit class around him and establishes the show’s core engine: Iruma cannot say no to anyone, and somehow this keeps saving the Netherworld.
Season 2 (21 episodes, 2021). The show levels up. The standout stretch is the Walter Park arc, where the class trip to a demon amusement park goes catastrophically sideways and the series proves it can do real action and real stakes without losing the comedy. This is also where Iruma’s “evil cycle” happens, the franchise’s single most famous bit, in which the nicest boy in two dimensions temporarily becomes a delinquent and it’s both hilarious and weirdly important for his character. If a friend tells you they dropped Iruma-kun in Season 1 for being too light, Season 2 is the rebuttal.
Season 3 (21 episodes, 2022-2023). The Harvest Festival arc: a wilderness survival competition where the misfit class members fight to climb the demon rank ladder. It’s the most shonen the show has ever been, complete with training arcs and genuine rivalries, and it sets up Season 4 directly. The season ends with Iruma’s rank-up and the school turning its attention toward the Music Festival, which is exactly where Season 4 picks up.
You don’t need encyclopedic recall of any of this to enjoy Season 4, but the Music Festival arc pays off relationships the first three seasons spent years building, especially within the misfit class. A binge is genuinely the better experience if you have the time.
And if you’re a parent wondering whether this is one you can watch with your kids: yes, more than almost anything else airing right now. It’s a Saturday-morning show in spirit and in actual time slot. There’s demon-school peril and some cartoon violence, but the heart of the series is a kind kid making friends in a strange place. It sits comfortably on the same family shelf as Spy x Family in our house.
What to Do Now (June 2026 Edition)
If you’re current: new episodes every Saturday on Crunchyroll through September 12. The back half of the arc is the part manga readers have been waiting years to see animated.
If you’re behind: Seasons 1-3 are all on Crunchyroll. At a relaxed pace of three episodes a night, you’re caught up in three weeks, right as the season heads into its second cour.
Read the manga: Season 4 adapts material starting from roughly volumes 15-16 of Osamu Nishi’s manga. If you can’t wait for weekly episodes, grab the volumes on Amazon (affiliate link). The manga’s pacing is tighter, and the Music Festival material reads wonderfully even when you know where it’s going.
Physical media: Seasons 1-3 Blu-rays and manga sets are available on Amazon (affiliate link) if you want the collection. English Blu-ray releases are region-dependent, so double-check compatibility before buying.
Follow along: the official Iruma-kun Twitter posts weekly episode visuals and previews if you like that drip-feed between Saturdays.
Plan the rest of your season: spring shows are heading into their finales while Iruma-kun keeps rolling. Our winter 2026 sequels guide covers what wrapped before this season started, if your backlog has room for one more.
Stream & Buy Welcome to Demon School Iruma-kun: Crunchyroll | Amazon | eBay
| Option | Notes |
|---|---|
| Crunchyroll | Stream free (with ads) or Premium |
| Amazon | Blu-ray, manga, official merch |
| eBay | Collector editions, rare merch |
FAQ
When did Iruma-kun Season 4 come out?
April 4, 2026. New episodes air Saturdays on Crunchyroll, with the season running two continuous cours through September 12, 2026.
What arc does Season 4 cover?
The Music Festival arc, where the Babyls misfit class prepares for a school-wide festival centered on music, with their class promotion riding on the outcome.
Where can I watch Season 4?
Crunchyroll, in most regions worldwide. Season 4 also gets a simultaneous English dub, a first for the series; dub episodes arrive the same week as the Japanese broadcast.
How many episodes will Season 4 have?
24 episodes, confirmed. That’s a two-cour, half-year run, the franchise’s longest single stretch since Season 1’s 23 episodes.
Do I need to rewatch Seasons 1-3 first?
A full rewatch isn’t required, but Season 3’s Harvest Festival arc leads directly into this story, so at minimum skim the last few episodes of Season 3. All 65 prior episodes are on Crunchyroll.
What chapter does Season 4 start from?
Roughly chapters 140-145 of the manga (volumes 15-16). Season 3 ended with Iruma’s rank-up and the lead-in to the Music Festival setup.
Affiliate Disclosure: This post contains Amazon affiliate links. If you buy through these links, I Crave Anime earns a small commission at no extra cost to you. It helps keep the site running and the seasonal guides coming.
Originally published February 13, 2026. Last updated: June 11, 2026, with the confirmed premiere date, episode count, streaming details, and a catch-up guide now that the season is airing.
