The video also introduces the theme song for the film, “Shigyo no Bell” (Bell to Announce Class) performed by by Shion Miyawaki, who previously sang the ED and insert songs for the TV anime second season. is written with full cooperation by the original manga author Yusei Matsui.
The clip shows a conversation between Nagisa and Karma in their old classroom seven years after the main story ended.
The official website for the upcoming Ansatsu Kyoushitsu: 365 Nichi no Jikan/Assassination Classroom: The Time of 365 Days compilation film today posted a 70-second third teaser including newly-animated footage for the film.