Welcome to Demon School! Iruma-kun Season 3

魔入りました！入間くん (Mairimashita! Iruma-kun 3rd Season)

8.2(1)

OtakuDen

7.8(120,037)

MAL Score

Ranked #1065

Popularity #1126

Comedy
Fantasy
School

Episodes: 21
Duration: 24 min per ep
Aired: Oct 8, 2022 to Mar 4, 2023
Status: Finished Airing

Synopsis

Back at Babyls Demon School after their summer break and the incident at Walter Park, Iruma Suzuki and the Misfit Class return to an unexpected wave of praise. Their relief doesn’t last long: keeping the coveted Royal One classroom now comes with a daunting condition—every member of the class must reach Dalet rank before moving on to second year.

With the Harvest and Music Festivals approaching, chances to climb the ranks are within reach, but the goal is unprecedented for an entire class. To make the impossible at least plausible, the school assigns special tutors to guide them through what’s ahead. Determined to rise even further, Iruma begins by trying to earn the recognition of his own tutor, the temperamental Bachiko Barbatos.

Otaku Consensus

Otaku Consensus: Season 3 is the franchise’s most divisive strong entry: Makoto Moriwaki’s direction and Bandai Namco Pictures’ bright, gag-forward staging keep the demon-school chaos charming, while the Harvest Festival gives the ensemble a more intricate competitive structure than the earlier seasons. The adaptation’s commitment to the Harvest Festival is also its chief liability, with many viewers praising the immersion but criticizing the stretched pacing, drawn-out action beats, and the difficulty of servicing such a large Misfit Class cast.

Why You Should Watch

Watch Season 3 if you want a school-fantasy tournament arc that stays wholesome instead of turning grim or self-serious. It scratches a similar itch to My Hero Academia’s class-based growth arcs and Assassination Classroom’s affectionate ensemble energy, but filters both through demon-world absurdity, rank grinding, and comedy-first timing. The appeal is in seeing a broad cast treated as a living classroom rather than background noise: rivalries, tutoring styles, and specialized skills like archery become punchlines and character tests at the same time. If you enjoy long-form festival arcs, found-family dynamics, and a protagonist whose power fantasy is still rooted in kindness and survival instinct, this season is the series leaning hardest into its identity.

Key Characters

I
Iruma Suzuki
Iruma remains compelling because his growth is not framed as swagger, but as a mix of survival instincts, emotional intelligence, and the rare ability to make a demon-school competition feel strangely gentle.
B
Bachiko Barbatos
Bachiko gives the season one of its sharpest mentor dynamics by tying Iruma’s development to archery, turning a fantasy-school training subplot into a clash of patience, pride, and precision.

What Makes It Stand Out

1
The season runs 21 episodes, airing from October 8, 2022 to March 4, 2023, which gives the Harvest Festival far more room than a standard single-cour tournament arc. That extended structure is the reason the arc feels more immersive to fans and more sluggish to critics.
2
Bandai Namco Pictures continues the series’ candy-colored demon-world presentation, keeping the fantasy setting closer to energetic school comedy than horror. The visual approach supports the show’s unusual mix of monsters, magic, teen classroom politics, and found-family warmth.
3
The AniList tag profile is unusually specific for a fantasy comedy: Demons at 95%, School at 92%, Magic at 90%, Isekai at 85%, Ensemble Cast at 82%, and Found Family at 80%. That combination explains why the season plays less like a lone-hero isekai and more like a supernatural homeroom ensemble.
4
Archery is not just a decorative skill tag here; AniList marks it at 70%, and Bachiko’s training material makes it one of the season’s clearest craft-based growth tracks. That gives Iruma a more concrete discipline than generic magic escalation.
5
The season’s reception centers on a real structural tradeoff: the same expanded character count that makes the Misfit Class feel like a genuine ensemble also makes the pacing vulnerable when individual contests and action beats run long.

Fun Facts & Trivia

Fun fact 1: Osamu Nishi is credited as the original creator, while the anime production is handled by Bandai Namco Pictures, the studio behind this third televised season’s 21-episode run.
Fun fact 2: Aiko Yamaguchi is credited for key animation on episodes 1, 3, 5, 7, 8, 12, 15, 16, 19, and 21, plus in-between animation on episode 17, giving them visible involvement across almost half the season.
Fun fact 3: Episode-specific staff credits include Hiroki Nagashima as production assistant on episode 9 and Kenichi Domon as episode director on episode 15, reflecting how the long Harvest Festival stretch was divided across different production hands.
Fun fact 4: The localization credits in the available data point to an active international release pipeline: Vitor Mello served as Brazilian Portuguese ADR director, while Keeley Pierson, Ben Harrington, and April Garner are credited on the English ADR recording, re-recording mix, and production coordination side.
Fun fact 5: Its database footprint is remarkably consistent across major anime platforms: MAL lists a 7.84 score from 120,037 votes, while AniList lists 78/100 and 1,754 favourites, suggesting a solid but not universally ecstatic reception.