Nanbaka: Idiots with Student Numbers!
Nanbaka: Shusseki Bangou no Tsuita Baka-tachi! · ナンバカ 出席番号のついたバカたち!
Synopsis
The official website for the Nanbaka television anime announced that the "Nanfes" event in April will screen a previously unreleased anime special.
Studios: Satelight, comico
Source: MANGA