Haru Asanushi
- A character in Kamitsubaki City Under Construction.
Harusaruhi plays the role of this girl.
Sekai Yorukawa
- A character in Kamitsubaki City Under Construction.
Isekaijoucho plays the role of this girl.
Koko Rinne
- A character in Kamitsubaki City Under Construction.
KOKO plays the role of this girl.
Kamitsubaki City Reconstruction Division
- A mysterious entity of Kamitsubaki City Under Construction. The management organization's purpose is to restore the city of Kamitsubaki.
SCOOP
- Mysterious project which was released at the end of KAMITSUBAKI FES '23.
L
- Mysterious boy who appeared in Kamitsubaki City Under Construction EMERGENCE.
Laplace
- A mysterious monster that is with KAF.
Hastur
- A mysterious monster that is with RIM.
Anemos
- A mysterious monster that is with Isekaijoucho.
Sinsekai City
- A city somewhere in the virtual world.
