“Welcome to Demon School! Iruma-kun” is a comedy about a human boy sold to a demon and enrolled in a school for monsters. That pitch sounds grim. It is not. The series turns the setup into a sitcom about a cowardly teenager trying to fit in among beings who can summon flames and fly.
Trailer, via Crunchyroll.
Iruma’s New Family
Fourteen-year-old Iruma Suzuki is abandoned and sold to a demon by his parents. The demon, Sullivan, adopts Iruma as his grandson and enrolls him at Babyls School for Demons, where Sullivan works as principal. Iruma’s classmates include Alice Asmodeus and Clara Valac, who become his friends despite their monstrous forms.
The show’s central trick is that Iruma is human, and Sullivan tells him never to reveal it. Anyone who finds out will eat him. That threat hangs over every episode, giving the jokes a spine of tension.
Comedy Among Monsters
The series leans heavily on slapstick and physical humor, with Iruma getting caught up in monster pranks and supernatural mishaps. Episodes often revolve around his cowardice and his attempts to hide his humanity from his classmates.
The supporting cast is where the show finds its energy:
- Alice Asmodeus, voiced by Ryohei Kimura, plays the role of the clever and mischievous friend.
- Clara Valac, voiced by Ayaka Asai, provides a grounded contrast to Alice’s antics.
- Ameri Azazel, voiced by Saori Hayami, adds a layer of romance to the mix.
- Naberius Kalego, voiced by Daisuke Ono, rounds out the core group with his own personality.
“Thus begins the cowardly Iruma-kun’s extraordinary school life among the otherworldly.”
The animation is clear and expressive, with character designs that read easily and energetic action sequences. The series is built to entertain rather than dazzle, and it succeeds at that goal.
A Long Run, A Solid Core
The anime ran for four seasons across multiple years, totaling 89 episodes. That is a substantial commitment from NHK Educational TV, which aired the show from 2019 through 2026. The pacing holds steady across that run, with each season following a similar pattern of monster-based challenges and comedic misunderstandings.
The fourth season, which premiered in April 2026, is the latest installment in the series. The manga, by Osamu Nishi, has been running in Akita Shoten’s Weekly Shōnen Champion since March 2017, with 50 tankōbon volumes collected as of September 2026. By March 2026, the manga and its spin-offs had over 20 million copies in circulation.
That success is reflected in the anime’s longevity. A spin-off series, “IruMafia,” is scheduled to premiere in January 2027, continuing the franchise beyond the original story.
Verdict on the Show
“Welcome to Demon School! Iruma-kun” is a consistently entertaining series that earns its 8.3/10 score through reliable comedy and a likable lead. The premise is strong, the voice acting is solid, and the show rarely overstays its welcome.
There are occasional dips in quality, and some episodes lean harder on repetition than others. But the core is sound.
The fourth season sees Iruma facing his true self and rising to become someone great. It closes the main story with a fitting resolution.
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