Iruma-kun Season 4 Is Halfway Done and Still Nobody Talks About It

In short: Welcome to Demon School! Iruma-kun Season 4 premiered April 4, 2026 and runs 24 episodes through September 12 at Bandai Namco Pictures. This guide covers where to start, what the Music Festival arc is doing, and why the series keeps getting overlooked despite four seasons of quality.

Key takeaways

  • Season 4 runs April 4 to September 12, 2026, with 24 episodes across two cours on Crunchyroll
  • Makoto Moriwaki directs at Bandai Namco Pictures with Kazuyuki Fudeyasu on series composition
  • The season centers on the Misfit Class needing all 13 members at Rank 4, achieved by winning the Music Festival
  • You cannot skip to Season 4, but the earlier seasons are a fast watch with a clear structure

There is a category of anime that runs for years, maintains a high standard, builds a devoted audience, and never once becomes a topic of general conversation. Welcome to Demon School! Iruma-kun has been in that category since 2019. Season 4 has been airing since April, it is 24 episodes long, and if you have not been watching it, there is a decent chance you did not know it existed.

This is a guide for fixing that.

The current season, practically

Season 4 premiered April 4, 2026 and runs through September 12, with 24 episodes across two consecutive cours. New episodes land on Crunchyroll on Saturdays at 2:25 a.m. PT, with subs and dub both available.

Makoto Moriwaki directs at Bandai Namco Pictures, with Kazuyuki Fudeyasu on series composition and Akimitsu Honma composing. That is the same core team the show has had throughout, which is a large part of why the quality has not wobbled across four seasons and seven years.

Two-cour runs are increasingly rare outside of shonen tentpoles and long-running kids' programming. Getting one here is a quiet vote of confidence from a production committee that clearly knows what its audience is.

What the season is about

The premise of the whole series, for the uninitiated: Iruma Suzuki is a human teenager whose spectacularly negligent parents sell him to a demon. The demon, Sullivan, turns out to be an enormously powerful and enormously doting figure who adopts Iruma as his grandson and enrolls him in Babyls, a demon school where being human is a death sentence if discovered.

The comedy engine is that Iruma physically cannot say no to anyone, a trait developed as a survival mechanism, which repeatedly forces him into escalating situations he never wanted. It is a better character premise than it sounds, because the show takes his inability to refuse seriously as damage rather than treating it purely as a gag.

Season 4's central problem is a class-wide one. The Misfit Class has been told to get all 13 members to Rank 4, and the route to doing it runs through winning the Music Festival. That structure is doing something the series has been good at for a while: taking an ensemble and forcing every member to be individually competent rather than letting the lead solve everything.

The Music Festival arc also gives the show an excuse to do musical sequences, and Bandai Namco Pictures has been spending real budget on them. If you drop in on a random episode this season, there is a reasonable chance you land on a performance number that looks considerably more expensive than the show around it.

Can you start at Season 4

No, and I would not recommend trying.

The show is built on accumulated character relationships across a 13-person ensemble plus faculty. Season 4's stakes only work if you know who the Misfit Class members are and what each of them has already overcome. Dropping in cold gets you competent animation attached to emotional beats you have no stake in.

The actual watch order

It is refreshingly simple. There are no movies to slot in, no recap films to skip, no alternate continuity.

Season 1 covers Iruma's arrival and the formation of the Misfit Class. It is the weakest season, and it is still good. The pacing is a little loose in the middle third and the show has not quite worked out how funny it wants to be versus how sincere.

Season 2 is where it clicks. The Harvest Festival arc is the series at its best and the point where most people stop describing the show as "cute" and start describing it as "actually great."

Season 3 handles the Walter Park arc and pushes further into the underlying plot about Iruma's identity and the school's power structures. It is the darkest of the four and earns it.

Season 4 is where you are now. Roughly 60 episodes to get there, which sounds like a lot until you consider that the episodes are extremely easy to watch back to back.

Why it stays under the radar

Partly it is the packaging. The title sounds like a children's show, the character designs are soft and round, and the marketing has never made a case for it as anything other than a light comedy. None of that prepares you for a series that handles parental neglect, class exploitation, and identity with real care.

Partly it is the schedule. Airing on NHK Educational in Japan and slotting into an early Saturday streaming window is not how you build discourse. The show does not premiere against hype cycles, it just quietly appears.

And partly it is that comedies are structurally undervalued in seasonal conversation. Action shows generate clips. Dramas generate arguments. A well-constructed comedy with good character work generates people who like it and do not feel the need to post about it.

Four seasons in, it remains one of the most reliable things airing. Season 4 has three months left to run, which is plenty of time to catch up and arrive in time for the Music Festival's finish.