If you thought the first half of Welcome to Demon School! Iruma-kun Season 4 was wild, brace yourself — the second cour is coming in hot, and the brand-new trailer dropped on June 13 has fans absolutely buzzing. Just when we thought Suzuki Iruma’s demon school adventures couldn’t get any more intense, the staff revealed a jaw-dropping key visual, a pulse-pounding promotional video, and three major new cast members that are going to shake up the story in ways nobody expected.
The Second Cour Trailer Has Everything We Didn’t Know We Needed
The new trailer for Iruma-kun Season 4 pulls zero punches. Without giving too much away, the footage teases some serious power-ups, new demon hierarchy conflicts, and what looks like the most ambitious arc in the entire franchise. The key visual shows Iruma front and center, flanked by both familiar allies and menacing newcomers who clearly mean business. The art quality from BN Pictures has taken another leap forward, and the animation looks sharper than ever.
What makes this reveal even more exciting is that Season 4 has already been delivering non-stop entertainment since its April 4, 2026 premiere. With a full 24-episode run confirmed, the second cour is set to dive into the deeper, darker corners of the demon world that the manga has been building toward for years.
Three Heavy-Hitting Voice Actors Join the Cast
The June 13 announcement didn’t stop at visuals. Three major voice actors have been confirmed for the second cour, and their characters sound like they’ll play pivotal roles in the upcoming story:
Yuma Uchida takes on the role of Leviathan Leiji. Uchida is no stranger to anime fans — he’s brought to life iconic characters like Kaneki Ken in Tokyo Ghoul re and Soma Yukihira in Food Wars! His casting as Leviathan suggests this character will carry some serious weight in the narrative.
Yoshitsugu Matsuoka voices Belial-Berry Razzberry. If you know Matsuoka’s work as Kirito in Sword Art Online or Inosuke in Demon Slayer, you already know he has the range to pull off literally anything. A character with the name Belial-Berry Razzberry in the demon world? Sign us up.
Misato Matsuoka rounds out the trio as Gyari. While less well-known to international audiences, Matsuoka has been steadily building a reputation with compelling supporting roles, and Gyari is shaping up to be a character fans will remember.
The Creative Team Behind the Magic
Season 4 of Iruma-kun brings back a dream team that has been perfecting this series since day one. Chief Director Makoto Moriwaki and Director Ayaka Tsujihashi continue to guide the adaptation, while Kazuyuki Fudeyasu handles series composition — the same writer who crafted beloved arcs for Dragon Ball Super and One Piece. Character designs by Yumiko Hara stay faithful to Osamu Nishi’s original manga art, and composer Akimitsu Honma returns with a soundtrack that perfectly balances comedy, action, and heart.
The manga, which has been serialized in Kodansha’s Weekly Shonen Champion since 2017, has consistently been one of the most creative and unpredictable shonen series out there. Season 4 is adapting some of the most fan-requested material, and if this trailer is any indication, the anime is going to do it justice.
Where to Watch
Crunchyroll continues to stream Welcome to Demon School! Iruma-kun Season 4 with both subtitled and dubbed options. For anyone who hasn’t caught up with the first half yet, now is the perfect time to binge before the second cour kicks into high gear.
The franchise has come a long way since Season 1 premiered in October 2019. What started as a charming fish-out-of-water comedy has evolved into one of the most genuinely exciting shonen anime on the market, blending heartfelt character development with genuinely creative demon world politics and battles.
What Do You Think?
The new Iruma-kun Season 4 trailer has set the bar incredibly high for the second cour. Are you excited to see Yuma Uchida’s Leviathan Leiji in action? Do you think the second half of Season 4 will surpass everything that came before it? And most importantly — is Iruma-kun the most underrated anime of the 2020s so far?
Drop your thoughts in the comments below. We want to hear your predictions for the second cour!
