Welcome to Demon School! Iruma-kun

魔入りました！入間くん (Mairimashita! Iruma-kun)

8.2(1)

OtakuDen

7.7(300,353)

MAL Score

Ranked #1331

Popularity #439

Comedy
Fantasy
School

Episodes: 23
Duration: 23 min per ep
Aired: Oct 5, 2019 to Mar 7, 2020
Status: Finished Airing

Synopsis

Fourteen-year-old Iruma Suzuki has spent his life scraping by, forced to work to support his irresponsible parents. His luck takes another strange turn when they sell him to a demon named Sullivan—only for Iruma to discover Sullivan doesn’t want a servant, but a grandchild. Showered with attention, Iruma is enrolled at the demon school Babyls.

Determined to stay out of trouble, Iruma tries to blend in and keep his humanity secret, but that proves nearly impossible. Sullivan is the school’s chairman, and Iruma’s connection to him draws constant attention—along with the expectation that he could become the next Demon King. Things spiral further when Iruma is made to recite a forbidden spell in front of the entire student body, saddling him with an unwanted reputation and pulling him into one odd predicament after another.

Otaku Consensus

Welcome to Demon School! Iruma-kun earns its strong 7.74 MAL average and 77/100 AniList score by letting Makoto Moriwaki’s upbeat direction and Kazuyuki Fudeyasu’s 23-episode structure turn a gag-heavy demon academy into an ensemble comedy with real found-family pull. Reviews consistently praise its rising momentum, likable cast from leads to side players, and colorful fantasy-school tone; the main caveat is that its gentle, broadly comic, family-friendly rhythm can feel too low-stakes for viewers seeking a sharper or darker isekai.

Why You Should Watch

Choose Welcome to Demon School! Iruma-kun if you want shounen school comedy where the emotional hook is found-family security rather than tournament pressure. It scratches some of the classmate-chaos itch of My Hero Academia and the whimsical academy energy of Little Witch Academia, but swaps hero training for demon manners, magic mishaps, and club-room absurdity. The 23-episode first season has room to let Iruma, Alice, and Clara become a comic triangle instead of a checklist of archetypes: anxious kindness, intense devotion, and pure gremlin energy. Viewers who prefer darker isekai power fantasies may bounce off its bright timing, but anyone wanting jokes, warmth, monster-student designs, and coming-of-age comfort without cynical edge will find it unusually sticky.

Key Characters

I
Iruma Suzuki(VA: Ayumu Murase)
Iruma stands out because his appeal is not dominance but survival instincts, reflexive kindness, and the comic tension of being treated as special when he is desperate to stay ordinary.
A
Alice Asmodeus(VA: Ryouhei Kimura)
Alice became a fan-favorite foil through the contrast between his polished demon-elite bearing and his hilariously absolute loyalty to Iruma.
C
Clara Valac(VA: Ayaka Asai)
Clara injects the series with anarchic, toy-box energy, turning scenes into chaos without losing the warmth that makes the central trio work.

What Makes It Stand Out

1
The first season is a 23-episode Bandai Namco Pictures production that aired from October 5, 2019 to March 7, 2020, giving it far more runway than a standard 12-episode fantasy-comedy cour.
2
Its AniList tag profile shows why the series travels beyond simple gag comedy: Demons 98%, School 96%, Magic 90%, Found Family 84%, Adoption 77%, and Coming of Age 72% all rank as core identifiers.
3
The series’ reputation is unusually consistent across platforms: MAL lists it at 7.74 from 300,167 votes with Popularity #439, while AniList records 77/100 and 5,543 favourites.
4
Critic and fan write-ups repeatedly emphasize escalation rather than novelty, with episode reviews noting that the show feels like it gets better as the cast dynamics accumulate.
5
The main trio is built as a balanced comedy engine: Ayumu Murase’s Iruma supplies nervous sincerity, Ryouhei Kimura’s Alice brings dramatic intensity, and Ayaka Asai’s Clara pushes scenes into gleeful disorder.

Fun Facts & Trivia

Fun fact 1: The anime adapts the work of original creator Osamu Nishi, with Makoto Moriwaki directing and Kazuyuki Fudeyasu handling series composition for the first TV season.
Fun fact 2: Character design is credited to Akihiko Sano, while Hitomi Yoshida served as art director, Tomoe Takaya handled color design, and Hiroyuki Chiba was director of photography.
Fun fact 3: The sound side was led by Hozumi Gouda as sound director, with Akimitsu Honma composing the music.
Fun fact 4: Akihiro Sekiyama is credited as animation producer, tying the 2019–2020 season’s production pipeline to Bandai Namco Pictures.
Fun fact 5: Online reception samples range from a 9/10 review calling out its demon-and-magic comedy mix to an IMDb-style 7.6 listing and fan commentary labeling it “S-tier” for making even side characters likable.