Where to Start the Welcome to Demon School! Iruma-kun Manga After Season 3

If you just finished Season 3 of Welcome to Demon School! Iruma-kun and immediately felt that empty “I need more of this story right now” feeling — you’re not alone. The anime wrapped up the Harvest Festival arc, which was one of the most intense storylines in the series so far. But the truth is… the story in the manga only gets bigger, deeper, and honestly a lot crazier from here.

As someone who has followed the series both in anime and manga form, I can confidently say that continuing the manga after Season 3 is absolutely worth it. The upcoming arcs expand the demon world, introduce unforgettable characters, and push the Misfit Class into challenges that make the Harvest Festival look like warm-up training.

Let’s break down exactly where you should start reading, what chapters the anime skipped, and what you can expect from the story moving forward.

Where Season 3 of Iruma-kun Ends in the Manga

The final episode of Season 3 adapts events up to Chapter 147 of the manga. The anime stays surprisingly faithful to the source material, covering the conclusion of the Harvest Festival and the aftermath involving the teachers.

If you want to continue the story without repeating anything, start here:

Start reading from Chapter 148

That chapter begins the next big storyline and transitions the story away from survival competitions into something completely different.

What Happened to Iruma’s Parents in Welcome to Demon School! Iruma-kun? Fate and Theories Explained

Anime vs Manga Progression

Two Important Chapters the Anime Didn’t Fully Adapt

Even though the anime adaptation is very loyal, a couple of chapters were shortened or skipped. If you want the full experience, I strongly recommend checking these out before continuing.

1. Chapters 90–91 (Small but Meaningful Character Moments)

These chapters are technically between Seasons 2 and 3 in manga timeline, but the anime only briefly referenced them.

What makes them worth reading?

• They explore a Sabbath event (a demon mixer or social gathering).
• They provide great development for Asmodeus Alice.
• You see him slowly lose his superiority complex and mature as a character.
• There’s also a fun interaction between Asmodeus and Ameri that many manga readers love.

They’re not mandatory for understanding the story, but they add emotional depth to the cast.

2. Kalego Gaiden (Teacher Backstory)

There is also a two-chapter side story focusing on:

• Naberius Kalego
• Opera

This mini arc shows their school days at Babyls, explaining some of their personality and rivalry dynamics.

The anime only hinted at parts of this during the Home Visit episode, but the manga version gives much more context.

If you enjoy the teachers (and honestly Kalego is one of the best characters), this side story is worth your time.

What Happens After Season 3? (No Spoilers)

The arcs after Chapter 147 are where the series really starts to feel more ambitious. The tone shifts from survival challenges into teamwork, culture, and eventually political tension inside the demon world.

Here are the main arcs waiting for you.

The Music Festival Arc (Chapters 148–186)

For many fans, this is one of the best arcs in the entire series.

Instead of battles or competitions, the Misfit Class must create a musical performance to prove they deserve to keep the prestigious Royal One classroom.

Why this arc is so good:

• It highlights team dynamics in the Misfit Class.
• Every character gets meaningful development.
• A mysterious classmate finally steps into the spotlight.

That student is Purson Soi, the quiet “invisible” member of the class who barely appeared before. His backstory is emotional and surprisingly powerful.

This arc balances humor, creativity, and character growth in a way that feels very unique compared to most shonen series.

Akudol Games & The 13 Crowns Arc (Chapters 187–213)

After the festival arc, the story shifts into a much larger world.

Important elements introduced here include:

• The Akudol (demon idol) world.
• Major political figures in the Netherworld.
• The powerful group known as the 13 Crowns.

This arc expands the scale of the series and starts planting seeds for future conflicts that could reshape the demon world.

The Heartbreaker Arc (Chapter 214 and Beyond)

By this point, Iruma and his friends are no longer inexperienced first-years.

Now they face:

• New first-year students.
• Intense combat challenges.
• Higher expectations from demon society.

The Heartbreaker arc is known among manga readers for its action, tension, and major character growth for the entire Misfit Class.

Some of the new characters introduced here are extremely strong and make for exciting rivalries.

Should You Read the Manga From Chapter 1?

A lot of fans ask this question.

Technically, you can jump straight to Chapter 148. But reading from the beginning does have some advantages.

Here are a few reasons manga readers recommend it:

1. The Art Style Evolves Dramatically

Author Osamu Nishi improves a lot over time. Early chapters look simpler, but later the art becomes darker and more detailed.

The manga often feels slightly more “demonic” in tone than the anime.

2. More Internal Thoughts from Iruma

In the anime, Iruma often seems calm and adaptable.

In the manga, we see more of:

• His anxiety about being human in the demon world.
• His fear of being discovered.
• His gradual confidence as he grows stronger.

Those internal monologues add another layer to his character.

3. Extra World-Building Details

The manga includes more small explanations about things like:

• Translation magic.
• Demon traditions.
• Babyls school systems.

They’re subtle additions, but they make the world feel richer.

Final Thoughts

If you finished Season 3 and want to continue the story, the best place to jump into the manga is Chapter 148.

However, before moving forward, it’s definitely worth taking a quick look at Chapters 90–91 and the Kalego Gaiden chapters to catch the character moments the anime didn’t fully explore.

From there, the story dives into some of the most beloved arcs in the entire series, starting with the fantastic Music Festival arc.

And honestly? If the anime already made you love the Misfit Class, the manga will probably make you appreciate them even more.

The Netherworld still has plenty of surprises waiting.