Uninhabited Sekai is 25-ji, Nightcord de.'s sekai. Kanade, Mafuyu, Ena, Mizuki, Miku, Rin, Len, Luka, and MEIKO have conversations here. Additionally, area items that increase the power of 25-ji, Nightcord de. can be found here.
Area items
| Icon | Name | For |
|---|---|---|
 |
オルゴール | Yoisaki Kanade |
 |
アクアリウム | Asahina Mafuyu |
 |
絵名の絵 | Shinonome Ena |
 |
かわいい服 | Akiyama Mizuki |
 |
繋ぎなおされたリボン | Hatsune Miku |
 |
ナイトコードルーム | 25-ji, Nightcord de. |
 |
割れた鏡 | 25-ji, Nightcord de. |
 |
ミュージックスピーカー | VIRTUAL SINGER |
