Name: Kanade Yoisaki Gender: Female Birthday: February 10 Height: 154cm School: Online High School Hobbies: Searching for and listening to music, watching movies, reading manga, watching anime, viewing art Specialty: Can sense the passage of time accurately Dislikes: Direct sunlight, general housework The composer for "Nightcord at 25:00." She was happy that Mafuyu started reacting more to the songs she wrote, but at one point, she was asked by Mafuyu's mother to stay away from her daughter. However, sensing something wrong with the mother's behavior, she rejected the demand and chose to stay by Mafuyu's side.

Name: Mafuyu Asahina Gender: Female Birthday: January 27 Height: 162cm School: Miyamasuzaka Girls' Academy Grade: 3-B Hobbies: Keeping aquariums Specialty: English conversation Dislikes: Unknown The lyricist for "Nightcord at 25:00." She lost sight of herself after constantly being pressured by her mother to be a "good girl," but through her music activities, she began to see the circle as a place where she belongs. However, when even that sanctuary was about to be taken away, she finally reached her limit, ran away from home, and sought help from Kanade.

Name: Ena Shinonome Gender: Female Birthday: April 30 Height: 158cm School: Kamiyama High School (Night Classes) Grade: 3-D Hobbies: Drawing, taking selfies and posting them to social media, ego-searching Specialty: Researching fashion accessories, guessing ingredients in food Dislikes: Waking up in the morning The illustrator for "Nightcord at 25:00." Despite suffering over her lack of artistic talent, she possesses the mental strength to keep drawing even when criticized. She has a blunt personality and used to get frustrated with Mafuyu for not speaking her mind to her mother, but she has noticed the changes in Mafuyu since they met and watches over her as a precious friend.

Name: Mizuki Akiyama Gender: ? Birthday: August 27 Height: 165cm School: Kamiyama High School Grade: 2-B Hobbies: Collecting video materials, making collages Specialty: Customizing clothes Dislikes: Hot foods The video maker for "Nightcord at 25:00." Mizuki was worried about Mafuyu's deteriorating relationship with her mother, but also felt a sense of helplessness due to being unable to face their own secret. However, Mizuki realized that there are things to be gained by running away from certain situations and advised Mafuyu that "it's okay to run away."

Name: Hatsune Miku Gender: Female Birthday: August 31 Height: 158cm Hobbies: Cat's cradle Specialty: Cat's cradle Dislikes: ? A Virtual Singer who has been in the Empty SEKAI, born from Mafuyu's feelings, since the beginning. She gently stays by the side of Mafuyu and the others.