Anime shorts of Ansatsu Kyoushitsu (TV) 2nd Season
were announced on Monday to adapt chapters of the manga
which have not been aired in the anime series. The shorts will be streamed online under the subtitle Kagaijugyou-hen
Streaming content portal dTV will release four episodes of the five-minute shorts every Friday beginning March 11. They will adapt chapters 78 ("Takebayashi no Jikan") and 79 ("Shihaisha no Jikan, Ni Jikanme"), which are published in the ninth manga volume.
Earlier this month, director Seiji Kishi
revealed in an interview
that the second season of the anime adaptation will follow the ending of the manga.
Source: Comic Natalie
Ansatsu Kyoushitsu (TV) 2nd Season: Kagaijugyou-hen