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New Assassination Classroom Film's Trailer Reveals Soro Tomonari's Theme Song

posted on by Rafael Antonio Pineda
Tomonari performs "Teacher" song for March 20 film

The official website for the Gekijōban Ansatsu Kyōshitsu Minna no Jikan (Assassination Classroom the Movie: Everybody's Time) anime film unveiled the full trailer and poster visual for the film on Monday. The trailer reveals and previews the theme song "Teacher" which singer-songwriter Sora Tomonari created specifically for the film.

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Image via Gekijōban Ansatsu Kyōshitsu Minna no Jikan film's website
© 松井優征／集英社・アニメ「暗殺教室」製作委員会2025

Tomonari grew up reading the manga during elementary and junior high school, and previously contributed the song "Kiiro Shingō" (Yellow Light) for the television anime's rebroadcast this past spring. Tomonari said the new song serves to repay Koro Sensei with gratitude, after feeling like one of the students in Class 3-E who grew up under Koro Sensei's tutelage. 

visual
Image via Assassination Classroom anime's website
© 松井優征／集英社・アニメ「暗殺教室」製作委員会2025

Previously announced new cast includes: 

  • Kikuko Inoue as Azusa
  • Mai Fuchigami as Hotaru, in addition to Nagisa
  • Sayumi Suzushiro as Kaho Tsuchiya
  • Mai Kanazawa as Kokona Tagawa
  • Yūichirō Umehara as Seeker
  • Kappei Yamaguchi as Futoshi
  • Kazuhiro Yamaji as Mario
  • Hiroki Tōchi as Chantha
  • Tetsu Inada as Sengoku

    • The cast members from the previous television anime will reprise their roles for the film.

    Masaki Kitamura (After-School Hanako-kun, Gundam Evolve) is directing the film at Lerche. Makoto Uezu returns to pen the script for the film, and Aya Higami (After-School Hanako-kun) is designing the characters.

    The film will open in Japan on March 20, 2026 with Avex Film Labels distributing.

    The new film contains a full collection of episodes that were left out of the anime due to time constraints. The original manga's author Yūsei Matsui stated that the film is not just a 10th anniversary project, but is also a continuation of the main story.

    Matsui's Assassination Classroom manga ran in Weekly Shonen Jump from 2012 to 2016. The manga inspired a 22-episode television anime series that aired in 2015, and a 25-episode second season that aired in 2016. An anime film then opened in Japan in November 2016.

    Toonami began airing the anime's first season in August 2020, and started airing the second season in 2022.

    Assassination Classroom also inspired two live-action films that opened in Japan in March 2015 and March 2016, respectively.

    Source: Gekijōban Ansatsu Kyōshitsu Minna no Jikan anime film's website, Comic Natalie

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