Sekai Seifuku: Bouryaku no Zvezda - Shin Zvezda Daisakusen
世界征服～謀略のズヴィズダー～ 新・ズヴィズダー大作戦
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世界征服～謀略のズヴィズダー～ 新・ズヴィズダー大作戦
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)