Takehito Koyasu stars as Poro in new "Iruma-kun" series

Saurav Kumar Mar 14, 2026 110
Takehito Koyasu stars as Poro in new "Iruma-kun" series

Major Announcement: Takehito Koyasu Joins Welcome to Demon School! Iruma-kun Season 4

The much-awaited main PV for the fourth series of the TV anime Welcome to Demon School! Iruma-kun, which is based on the popular manga by Osamu Nishi, has finally arrived. This news has sparked a lot of excitement among the fans who have been waiting for the next chapter of Iruma's journey. Along with the trailer, it was also officially announced that the legendary voice actor Takehito Koyasu will be joining the cast as Amduskias Polo, a character who is set to play a very significant role in the upcoming arc.

The teaser gives us a proper look at some of the fresh scenes from the 4th series, highlighting the vibrant animation by Bandai Namco Pictures. The story continues to follow Iruma Suzuki, a kind-hearted human boy who was sold to a demon by his own parents but ended up becoming the pampered grandson of the great demon Sullivan. For many viewers, seeing how he navigates this dangerous yet funny world is exactly why Welcome to Demon School! Iruma-kun is a must-watch fantasy hit for any anime lover.

The Music Festival Arc and the Introduction of Poro

In the newly released PV, we also get to hear a snippet of the opening theme song titled "Ichinino-san" performed by the group Penthouse. The music feels quite energetic and perfectly sets the mood for the Music Festival Arc. Poro (Amduskias Polo), voiced by Koyasu, is introduced as a former member of the 13 Crowns with the famous nickname "Otoma." He is a tall, flamboyant demon who will be acting as a judge during the festival, standing directly in the path of Iruma and his classmates from the Abnormal Class.

The stakes are higher than ever this season. Iruma and his friends have been given a massive challenge: they must all reach Rank 4 (Daleth) before the end of the festival. This is almost an impossible task because the Abnormal Class has 13 students, and getting everyone to that rank requires a level of coordination they have never shown before. It is truly a test of their bonds and their growth as a team.

What to Expect in the New Series

The fourth series will dive deep into the preparations for the big event. We will see more of Purson Soi, the 13th student who has been mostly invisible until now. The production team has also revealed the distribution start date and the various streaming services where fans can catch the episodes. Whether you are a fan of the comedy or the supernatural action, the unique charm of the show makes it clear why Welcome to Demon School! Iruma-kun is a must-watch fantasy hit in the current shonen landscape.

  • New Cast: Takehito Koyasu as the flamboyant judge Amduskias Polo.
  • Main Theme: "Ichinino-san" by Penthouse will be the new opening track.
  • The Challenge: All 13 students must reach Rank 4 to avoid losing their classroom.
  • Animation: BN Pictures returns to handle the production with Ayaka Tsujihashi directing.

TV anime “I entered the demon! Iruma-kun” 4th series main PV

Fans are really looking forward to seeing how Iruma manages to balance his human secret while trying to lead his class to victory. With the addition of a veteran like Koyasu and the focus on the musical elements, Season 4 is shaping up to be the most ambitious one yet. Make sure to stay tuned for more updates as the premiere date gets closer!

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