Uninhabited Sekai (Miku 2☆)

Japanese: 嬉しいはくすぐったい
Romaji: Ureshii wa Kusuguttai
English: Happiness Is Embarrassing

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Vacant Sekai (誰もいないセカイ, Daremoinai Sekai) is Hatsune Miku's 6th card. It is a 2☆ mysterious card that was released in the Release Celebration Gacha. It is given to the player at the very beginning of the game if they select 25-ji, Nightcord de. as their starting unit.