Nagisa, Karma and Korosensei in the official thearical cover.
Assassination Classroom the Movie: 365 Days (Ansatsu Kyoushitsu: 365-Nichi no Jikan 劇場版『暗殺教室』365日の時間) is a sequel summary anime movie that summarizes the entire anime series featuring adult Nagisa and Karma telling the story of the Class 3-E how Korosensei made them what they are now a days.
It was revealed in 46th issue of Shueisha's Weekly Shonen Jump magazine revealing more plot details on Monday about the original story included in the Assassination Classroom The Movie: 365 Days compilation anime film.
Trailers
アニメ「暗殺教室 劇場版 ３６５日の時間」＆「殺せんせーQ！」告知CM
Teaser Trailer of Koro-Sensei Q! and 365 days.
『劇場版「暗殺教室」３６５日の時間』特報第２弾
Second Teaser Trailer for the 365 days movie.
『劇場版「暗殺教室」３６５日の時間』特報第３弾
Third Teaser Trailer for the 365 days movie.
Gallery
First cover of the 365 days.
Nagisa and Karma about to enter their old class.
Nagisa, Karma and Korosensei in the final image cover.