Mafuyu Asahina Gender: Female Birthday: January 27 Height: 162cm School: Miyamasuzaka Girls' Academy Grade: 3-B Hobbies: Aquariums Specialty: English conversation Dislikes: Doesn't know The lyricist for "Nightcord at 25:00." She lost sight of herself due to her mother's constant demand for her to be a "good girl," but through her music, she began to recognize the circle as a place where she belongs. However, when even that sanctuary was nearly taken away, she finally reached her limit, ran away from home, and sought help from Kanade. Within Nightcord at 25:00, she is in charge of lyrics and arrangement (mixing). She originally composed her own music and posted it on social media, which led Kanade Yoisaki to invite her to join the circle. Because of this background, she occasionally composes music as well. Her handle name is "Yuki" (Snow), chosen because it was snowing when she decided on it. Apparently, she didn't give it much thought. At school, she belongs to the archery club and rarely misses the target even in winter. Despite being in the same club, she shows various considerations for Shizuku Hinomori, who cannot show up often due to her idol activities. Beyond that, she was chosen as the anchor for the grade-level relay at the sports festival and possesses physical abilities high enough to engage in a dead heat with the incredibly athletic Emu Otori. Her grades are excellent, and she often helps her friends study. She has been a class representative since her first year and gave advice to Ichika Hoshino when she was nervous about being a representative for the first time. Furthermore, she is highly considerate of others, has a bright personality, and possesses the humor to return jokes with jokes—a textbook "honor student" who is relied upon by everyone around her.

Kanade Yoisaki Gender: Female Birthday: February 10 Height: 154cm School: Correspondence High School Hobbies: Searching for and listening to music, watching movies, manga, anime, and art Specialty: Can measure time by intuition Dislikes: Direct sunlight, general housework The composer for "Nightcord at 25:00." She was happy to see Mafuyu reacting more to the songs she created, but at one point, Mafuyu's mother demanded that she "stay away from Mafuyu." However, sensing something wrong in the mother's words and behavior, she rejected the demand and chose to stay by Mafuyu's side.

Ena Shinonome Gender: Female Birthday: April 30 Height: 158cm School: Kamiyama High School (Night Classes) Grade: 3-D Hobbies: Drawing, taking selfies and uploading to SNS, ego-searching Specialty: Researching fashion accessories, guessing ingredients in food Dislikes: Waking up in the morning The illustrator for "Nightcord at 25:00." While struggling with her perceived lack of talent for art, she possesses the mental strength to keep drawing even when criticized harshly. She has a straightforward personality and used to get irritated with Mafuyu for not expressing her will to her mother, but she has felt the changes in Mafuyu since they met and watches over her dearly as a comrade.

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

Niigo Luka Compared to the other members of Niigo, she never stops smiling and her personality is not closed off. She gives advice that seems to shake Kanade, who is lost in her own way of being. She is elusive and hard to pin down. Unlike MEIKO, who watches from a distance, or KAITO, who actively pushes them forward without coddling, Luka's stance is to "provoke" Kanade and the others. Luka actively talks to and interacts with Meiko and Kaito, but the two of them don't think very highly of her (they likely trust her, but their stances and personalities simply don't clash well), creating a unique atmosphere among the three. And as expected, Luka is always smiling. While she has a mysterious and slightly scary side, she also has a side that enjoys her own anniversary more than anyone else, going wild with party sunglasses.

Niigo KAITO Among the Virtual Singers of Niigo, many of whom are inorganic, detached, or inscrutable, he stands out as particularly distinct, often displaying a rough tone and raw passion. His outfit is asymmetrical like the other Virtual Singers, but it is predominantly black and has tears in some parts. While his sharp edges are prominent, in area conversations added for the 3rd anniversary, he has begun to show a "soft" side, such as clicking his tongue at the sleeping Miku and Rin while placing cushions for them, or eating ice cream with Miku. He isn't just abrasive; in the event "With My Scratch-Scarred Hands," he reflected on his own actions and statements in the preceding "Where Does the Thorny Path Lead?" and told them, "I bear responsibility for this matter too," showing consideration for others and his comrades depending on the situation. During the 2025 April Fools' event, he met Leo/need Kaito and MORE MORE JUMP! Kaito, and irritably remarked of Leo/need Kaito, "It pisses me off how limp he is, even though he's 'me'" (to which Leo/need Kaito replied, "I'm me, and I'm a different 'me' from you, so telling me that doesn't really help..."). He seems to have poor compatibility with KAITOs from other Sekais (especially types like Leo/need Kaito whose personalities don't mesh).