// 25-ji, Nightcord de. was created by Kanade ("K") to make music that "saves people" and brings hope. She communicates with members Ena ("Enanan"), Mizuki ("Amia"), and Mafuyu ("Yuki") through a chat app called Nightcord, where their real identities are initially unknown to each other.

// Mafuyu joined after being deeply moved by one of Kanade's songs and sent her an arrangement under the name "Yuki." Kanade invited her to collabate, and they created a song together at 1 AM when Mafuyu could safely work in secret.

// Later, Ena made illustrations for one of their songs, which Mizuki found and used to make a music video (MV). After confirming Kanade's identity, Mizuki joined the group, and all four began working together.

// Eventually, they received a mysterious song file called "Untitled", which transported them into the pararel world that name is Empty SEKAI, a surreal world reflecting their emotional states. Click here for more information