The anime Welcome to Demon School! Iruma-kun is moving closer to the end of its fourth season. Episode 21 is set to arrive this weekend, bringing more action from the ongoing idol competition arc. Here is everything you need to know about when and where to watch the new episode.
Episode 21 Release Date and Time for Major Regions
Welcome to Demon School! Iruma-kun Season 4 Episode 21 releases on Saturday, September 5, 2026. The episode airs first in Japan on NHK E Tele at 6:25 PM JST.
For viewers outside Japan, the episode becomes available on streaming platforms with a slight delay. The online streaming release is scheduled for Monday, September 7, 2026 at 6:00 PM JST.
Here are the exact release times for the streaming debut across different time zones:
- Pacific Daylight Time (PDT) – 2:25 AM
- Mountain Daylight Time (MDT) – 3:25 AM
- Central Daylight Time (CDT) – 4:25 AM
- Eastern Daylight Time (EDT) – 5:25 AM
- Greenwich Mean Time (GMT/UK) – 9:25 AM
- Central European Time (Germany, France) – 11:25 AM
- Indian Standard Time (IST) – 2:55 PM
- Japan Standard Time (JST) – 6:25 PM
For Australia, the episode drops in the early hours of Monday morning. Viewers in Sydney (AEST) can expect the episode around 7:25 PM AEST on Monday. For UAE and the Middle East, the release time falls around 1:25 PM GST.
Where to Watch Episode 21
Crunchyroll is the primary streaming platform for international audiences. The platform carries the series with both subtitled and dubbed English versions.
The episode is available in multiple regions including North America, Central America, South America, Europe, Africa, Oceania, the Middle East, CIS nations, and India.
In Japan, the episode airs on NHK Educational Network. Japanese viewers can also stream it on ABEMA, Disney Plus, U-NEXT, and Hulu.
For Southeast Asian viewers, Muse Asia’s YouTube channel provides the series in countries like Indonesia, Malaysia, Philippines, Singapore, Thailand, and Vietnam at 6:55 PM GMT+8. Other platforms like Bilibili and iQIYI also carry the series in select regions.
What Happened So Far in Season 4
Season 4 focuses on the Music Festival arc. The Misfit Class must get all 13 members to Rank 4. Winning the Music Festival is their only path to achieve this goal.
The current story arc involves the Akudol (Idol) Great Battle Festival. Iruma participates under the stage name “Irumi” while his classmate Shax Lied performs as “Lindy”. The idol Kuromu, who is actually Crocell Keroli from Iruma’s class, has been a central figure in this competition.
Episode 20 showed strong performances from Azazel Ameri and Lied’s team. The competition has been heating up with each new round.
Episode 21 Story Preview – “The Rich Man and the Jewel”
Episode 21 is titled “The Rich Man and the Jewel” (富豪と宝石).
The preview reveals a major turning point in the idol competition. Gyari, Kuromu’s rival rock akudol, makes a bold proposal. He declares that if he wins, he will marry Kuromu.
Kuromu fires back with an equally surprising response. She says she will marry Irumi instead.
Both characters have strong reasons for winning. Kuromu wants to watch Gyari reach for his ideals from the best seat possible. Gyari wants to win Kuromu, whom he sees as the only demon worthy of him.
With neither side willing to back down, the next event is the Akudol Great Cavalry Battle (Dai Kiba-sen). This promises to be an intense competition between the two rivals.
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Why This Episode Matters
Episode 21 comes at a key point in Season 4. The season has 24 episodes total, meaning only a few episodes remain after this one.
The Kuromu and Gyari rivalry has been building throughout the idol arc. This episode brings their conflict to a head with high personal stakes for both characters. The marriage proposals add a layer of comedy and tension to an already competitive situation.
The episode also continues Iruma’s journey as “Irumi” in the idol competition. His participation has created unexpected connections and conflicts within the demon world’s entertainment scene.
Season 4 has been streaming since April 4, 2026. The series has maintained a weekly Saturday release schedule throughout its run.
Also Read: ‘Welcome to Demon School! Iruma-kun’ Season 4 Episode 18 Recap: Iruma Faces the Thirteen Crowns
For more anime news and updates on Welcome to Demon School! Iruma-kun, keep checking VvipTimes for the latest release schedules and story recaps.
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