A member of 25-ji, Nightcord de. Responsible for MV production. Nickname is Amia. Likes curry rice and french fries, but dislikes hot food and mushrooms. Loves playing pranks but is also deeply considerate and perceptive. Sociable and doesn't act shy around people who don't avoid them. Good at reading others' thoughts. Rarely shows a negative side when with others. Cross-dresses as a girl, but not out of malice—simply because they think it's cute. Acts cold toward those who look down on them.

A member of 25-ji, Nightcord de. Responsible for lyrics. Nickname is Yuki. Due to years of gaslighting by her mother since childhood, she is under immense stress and can barely feel emotions or taste food. Publicly, however, she is an honors student who excels in studies, maintains a good reputation, and participates in both the Archery Club and Student Council. For Mafuyu, writing lyrics for 25-ji, Nightcord de. and being with the members is her safest sanctuary. She is somewhat blunt with the members who know her true self, though she never goes as far as being excessively cruel.

The leader of 25-ji, Nightcord de. Nickname is K. She mainly uploads vocal songs with lyrics, accompanied by 2D MVs and thumbnails that match the tracks. Warm, considerate, and understanding. Her favorites are cup noodles (original flavor) and canned food, while she dislikes foods with unique or strong smells. She hates spending time on anything that doesn't help with composing, so she usually makes do with a single cup of noodles. Sometimes she doesn't eat at all. In short, she eats very little. Her mother passed away, and her father is hospitalized, so she has a housekeeper sent by her grandmother.

A member of 25-ji, Nightcord de. Nickname is Enanan. Responsible for illustrations. Likes cheesecake and pancakes. Speaks her mind without hesitation. Has a strong sense of pride. Often gets flustered and reactive when teased by Mizuki. However, she is kind-hearted, capable of empathizing when others are struggling, and actively steps forward to help. She is excellent at sharp-tongued remarks and has great persuasive skills within the group.