Sekai Seifuku: Bouryaku no Zvezda - Shin Zvezda Daisakusen
Genres: Action, Comedy, Fantasy
Type: Special, Episodes: 1
Aired: Oct 15, 2014
Studio: A-1 Pictures
Source: Original
Rating: PG-13 - Teens 13 or older
Synopsis:
The unaired 13th episode of Sekai Seifuku: Bouryaku no Zvezda that will be included in Volume 7 of the BD/DVD. In this special, Kate and company will launch their own idol unit.

(Source: Crunchyroll)