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 | Attribute |
|---|---|---|---|
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Music Box (オルゴール ) | Yoisaki Kanade | 
|
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Aquarium (アクアリウム) | Asahina Mafuyu | 
|
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Ena's Painting (絵名の絵) | Shinonome Ena | 
|
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Cute Outfit (かわいい服) | Akiyama Mizuki | 
|
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Re-Tied Ribbon (繋ぎなおされたリボン) | Hatsune Miku |
|
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Nightcord Room (ナイトコードルーム) | 25-ji, Nightcord de. | 
|
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Broken Mirror (割れた鏡) | 25-ji, Nightcord de. |
|
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Music Speakers (ミュージックスピーカー) | VIRTUAL SINGER |
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