25-ji, Nightcord de. (also referred to as Nightcord at 25:00, Niigo, 25ji, and N25) is an underground music circle that comes from the mobile game Project Sekai COLORFUL STAGE! The group operates daily at 25:00 on the fictional online chatting app "Nightcord" (in reference to "Discord") with the main goal of theirs being to "save somebody" with their music. Niigo's songs often feature themes that reflect on their characters stories and feelings, most of the time being melancholy.

Kanade Yoisaki (known as K, CV: Tomori Kusunoki) is the leader of the group. She is in charge of composing the band's music.
Mafuyu Asahina (known as Yuki, CV: Rui Tanabe) is the lyricist of the group. She writes the lyrics for their songs and has produced before under the artist name OWN.
Ena Shinonome (known as Enanan, CV: Minori Suzuki) is the illustrator of the group. She is responsible for creating concept and cover art for their songs.
Mizuki Akiyama (known as Amia, CV: Hinata Sato) is the animator of the group. They have a passion for fashion and often creates costumes for their music videos as well. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.