What Is the Welcome to Demon School! Iruma-kun Manga?

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The Welcome to Demon School! Iruma-kun manga is an ongoing Japanese comedy-fantasy series written and illustrated by Osamu Nishi, serialized in Weekly Shonen Champion by publisher Akita Shoten since March 2017. It follows Iruma Suzuki, a 14-year-old human boy sold by his irresponsible parents to a demon named Sullivan, who adopts him as his grandson and enrolls him at the demon academy Babyls.

Known in Japanese as Mairimashita! Iruma-kun, the series blends warm slice-of-life comedy with a colorful demon-world fantasy setting. Below you’ll get a clear breakdown of the plot, the manga’s publication status and chapter count, how it differs from the anime, and where you can read it in English.

Table of Contents

What Is the Welcome to Demon School Iruma-kun Manga About?

The Welcome to Demon School! Iruma-kun manga is a comedy-fantasy story about Iruma Suzuki, a kind-hearted human teenager who is sold to the demon Sullivan and ends up living in the Netherworld. Sullivan, the chairman of the demon academy Babyls, dotes on Iruma as his grandson and enrolls him as a student, where Iruma must hide that he is human to survive.

The hook is simple but rich: a perpetually agreeable human boy who can never say no is dropped into a school full of demons. To stay safe, Iruma’s one rule is to avoid standing out — and he fails constantly. He befriends the rambunctious Clara Valac and the proud, battle-hungry Alice Asmodeus, climbs the school’s demon-rank system, and slowly grows from a doormat into someone who learns to assert himself. The series balances lighthearted school comedy with longer arcs involving the Royal One ability, the demon hierarchy, and Iruma’s mysterious connection to the demon king Derkila.

Who Created the Iruma-kun Manga?

The Welcome to Demon School! Iruma-kun manga is written and illustrated by Osamu Nishi, a Japanese mangaka who launched the series in Weekly Shonen Champion in March 2017. It is Nishi’s best-known and most successful work, having earned a multi-season anime adaptation and consistent placement among Akita Shoten’s flagship titles.

A few quick publication facts:

  • Author/Illustrator: Osamu Nishi
  • Magazine: Weekly Shonen Champion
  • Publisher: Akita Shoten
  • Serialization start: March 2017
  • Japanese title: Mairimashita! Iruma-kun

Nishi’s art style leans expressive and cartoonish, which suits the series’ rapid-fire comedy and exaggerated demon designs. The manga has been collected into more than 40 tankobon volumes, reflecting a long and stable run that continues today.

Is the Welcome to Demon School Iruma-kun Manga Finished?

No — the Welcome to Demon School! Iruma-kun manga is not finished. As of 2026, Osamu Nishi is still actively serializing the series in Weekly Shonen Champion, with new chapters releasing regularly and more than 40 collected volumes published by Akita Shoten.

The story has expanded well beyond its early “hide that Iruma is human” premise into larger arcs exploring the demon ranks, the Misfit Class (Abnormal Class), and the looming presence of the original demon king. Because the manga is ongoing, it remains significantly ahead of the anime adaptation. Readers who want the full, up-to-date story should follow the manga rather than waiting on animated seasons.

Manga vs. Anime: What’s Different?

The Welcome to Demon School! Iruma-kun anime, produced by Bandai Namco Pictures and broadcast on NHK Educational TV, is a faithful adaptation of Nishi’s manga. The core difference is simply how much story each format covers: the manga is the source and runs far ahead, so anime-only fans are missing several arcs that the manga has already published.

The anime’s strengths are its bright animation, music, and comedic timing, which bring Iruma, Clara, and Asmodeus to life with energy. The manga, however, gives you the complete narrative without waiting for the next season, plus the original pacing and detail Nishi intended. If you enjoyed the anime and want to know what happens next, the manga is the natural continuation. Neither is strictly “better” — the anime is the more polished entry point, while the manga is the more complete experience.

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If you want to read the latest chapters in English, SnowMTL offers AI-powered manga translation at snowmtl.org, so you can keep up with Welcome to Demon School! Iruma-kun arcs the anime hasn’t adapted yet.

Where to Read the Iruma-kun Manga

The Welcome to Demon School! Iruma-kun manga has been licensed for English release, and digital and print volumes are available through major manga retailers and bookstores. Because the series is ongoing in Weekly Shonen Champion, official English volumes typically trail behind the latest Japanese chapters.

For readers who want to follow the newest arcs as they release, fan and AI-assisted translation platforms help bridge that gap. The series’ blend of approachable comedy and a deep demon-world setting makes it an easy recommendation for fans of school-comedy fantasy. If you’re caught up and craving more, the manga is the only way to read past where the anime currently ends.

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Frequently Asked Questions About the Iruma-kun Manga

What is the Welcome to Demon School Iruma-kun manga about? It follows Iruma Suzuki, a human boy sold to the demon Sullivan, who adopts him and enrolls him at the demon academy Babyls. Iruma must hide that he is human while making friends and climbing the demon-rank system in a comedy-fantasy setting.

Who wrote the Welcome to Demon School Iruma-kun manga? The manga is written and illustrated by Osamu Nishi. It has been serialized in Weekly Shonen Champion by publisher Akita Shoten since March 2017 and is his best-known work.

Is the Iruma-kun manga finished? No. The Welcome to Demon School! Iruma-kun manga is still ongoing as of 2026, with Osamu Nishi continuing to serialize new chapters in Weekly Shonen Champion and more than 40 volumes published.

Is the Iruma-kun manga better than the anime? Neither is strictly better. The Bandai Namco Pictures anime is a polished, faithful entry point, while the manga is the complete, up-to-date story and runs well ahead of the anime adaptation.

Where can I read the Welcome to Demon School Iruma-kun manga? Official English volumes are available through major manga retailers and bookstores, and AI-assisted translation platforms help readers follow the newest chapters that official releases and the anime have not yet caught up to.

Conclusion

In short, the Welcome to Demon School! Iruma-kun manga is an ongoing comedy-fantasy series by Osamu Nishi that follows human boy Iruma Suzuki through life at the demon academy Babyls — and it is still being serialized in Weekly Shonen Champion today. With 40-plus volumes, a charming cast, and a story that runs ahead of the anime, it’s an easy pick for fans of warm, funny fantasy. Want something similar? See our guide on anime like Welcome to Demon School Iruma-kun. Bookmark this page — we update it as new chapters and franchise news drop.

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