Sekai Seifuku: Bouryaku no Zvezda - Shin Zvezda Daisakusen
English title: World Conquest Zvezda Plot: Operation New Zvezda
Japanese title: 世界征服～謀略のズヴィズダー～ 新・ズヴィズダー大作戦
Type: Special
Episodes: 1
Source: Original
Genres: Action, Comedy, Fantasy
Studios: A-1 Pictures
Producers: Aniplex, flying DOG
Duration: 24 min
Rating: PG-13 - Teens 13 or older

The unaired 13th episode of Sekai Seifuku: Bouryaku no Zvezda that is included in Volume 7 of the BD/DVD. In this special, Kate and company will launch their own idol unit.

(Source: Crunchyroll)