Yusei Matsui‘s original TV anime Assassination Classroom is celebrating a return after 10 years with the comeback of 3-nin E-gumi Utatan.
The group’s new song will serve as the opening theme for the fourth installment, which will conclude the rerun of Assassination Classroom starting January 2026.
The announcement was made on the radio program TV Anime 10th Anniversary ‘Assassination Classroom’ All Night Nippon GOLD.

Members of 3-nin E-gumi Utatan:
Mai Fuchigami as Nagisa Shiota
Aya Suzaki as Kaede Kayano
Nobuhiko Okamoto as Karma Akabane
Ryota Osaka as Yuuma Isogai
Shintaro Asanuma as Hiroto Maehara
The new songs are written by Fujibayashi Seiko, known for penning the opening themes “Jiriki Hongan Revolution,” “QUESTION,” and “Bye Bye YESTERDAY.” Akimitsu Honma, who composed and arranged “QUESTION” and co-arranged “Bye Bye YESTERDAY” with Frederic, is also credited for writing lyrics, composing, and arranging the new tracks.
Assassination Classroom anime originally premiered on January 9, 2015. The original manga was serialized in Weekly Shonen Jump (Shueisha) from 2012 to 2016, with total circulation surpassing 27 million copies.
Crunchyroll streams the Assassination Classroom anime and describes the story as follows :
Forget about homework and pop quizzes. The students of Class 3E have a far more important assignment: kill their teacher before the end of the year! A tentacle-d sensei that moves at Mach 20 is out to conquer the classroom after destroying seventy percent of the moon. In addition to reading, writing, and arithmetic, the murderous monster behind the lectern will teach his students everything he knows about the assassination game. Should some eager beaver prove to be a quick study in killing, he or she will save Earth from extinction – and collect a hefty reward.
Source: Comic Natalie
© Yusei Matsui/SHUEISHA,ASSASSINATION CLASSROOM Committee
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