Female. 18 years old. The composer and leader of 25-ji, Nightcord de. She has long, light blue hair that reaches her knees. She usually wears a blue tracksuit. She is incredibly kind and understanding. However, if she loses someone precious or if they are hurt, she becomes unstable like a 'menhera' and blames herself for everything. Her mother passed away when she was young. Her father was also a composer, but he became stressed by the gap in their musical talent, eventually suffering memory loss and falling into a coma. She was once obsessed with the idea that she 'must create a song to save someone,' but she has overcome this to some extent by being with the members of Niigo. Because she is so focused on composing, she often forgets to eat or sleep, resulting in poor health. Her voice is breathy and soft, and she has a charming quality of sounding like she's on the verge of tears at times.

Female. 19 years old. The lyricist for 25-ji, Nightcord de. She has purple hair tied back and draped over her right shoulder. At school, she is a perfect model student. She is polite and kind to everyone. However, when working with the Niigo members, she is the complete opposite. Her true nature is blunt and quiet. Her heart has been worn down by her mother's gaslighting. When things get truly difficult, she remembers what Mizuki said—"It's okay to run away when it's hard"—and sometimes flees to Kanade's house. She doesn't particularly like or dislike anything. She is prone to severe self-reproach, yet she surprisingly looks after the other members. Her relationship with her mother was originally at its worst, but thanks to the Niigo members and Kanade, she has reached a point where she can endure it. She is sincerely grateful to Kanade. Occasionally, her inner thoughts slip out without being filtered. Her charm lies in her decadent and dark voice.

Female. 19 years old. Brown short hair with a braid behind her ear. The illustrator for 25-ji, Nightcord de. She loves drawing. She is a tsundere but cares for others more than anyone. She had a poor relationship with her father because he, a painter himself, did not acknowledge her talent, but she has stabilized thanks to Mizuki. She takes good care of her friends. She gets angry easily, but she lets her guard down in front of those she is close to. She likes Mizuki. Her charm lies in her cute, expressive voice.

Male. 19 years old. Pink hair tied into a side ponytail. Likes cute and pretty things. Has had unique tastes since childhood. He was traumatized by being teased for liking cute things despite being a boy. He still dresses in a feminine style, but he is conscious of how others perceive him. Whenever the topic of gender comes up, he brushes it off with a joke. He is playful and loves to tease others. However, he knows his limits and has a gentlemanly side. He is sincerely grateful to Ena for accepting him for who he is. His charm lies in his androgynous voice.