Known as K in Nightcord. The leader of Niigo. 18 years old (high school student). Attends an online school. She has been released from the sense of responsibility that she must sacrifice herself to keep writing music. Now, she enjoys composing. First person: I (polite/feminine).

Known as Yuki in Nightcord. A member of Niigo. 18 years old (high school student). Attends Miyamasuzaka Girls' Academy. She was forced to be a "good girl," and the stress caused her to lose her sense of taste, her desires, and her emotions. She resolved this through discussion with her mother. Now, her sense of taste has returned, and she understands her own desires and emotions. First person: I (polite/feminine).

Known as Enanan in Nightcord. 18 years old (high school student). Attends Kamiyama High School. Her father is a painter and understands the hardships of that life. Because of this, he told her not to become a painter in his own clumsy way. This led her to believe she had no talent. After talking with her father, she now aims to be a painter while fully understanding the difficulties involved. First person: I (casual/feminine).

Known as Amia in Nightcord. 18 years old (high school student). Attends Kamiyama High School. They were afraid that everyone would leave if they confessed to being a boy who wears cute clothes, and the secret became a painful burden. When they finally opened up, everyone accepted them. First person: I (soft/masculine).

A resident of the Sekai. She can move freely between devices like smartphones. Kind-hearted.

A resident of the Sekai. She can move freely between devices like smartphones. A tsundere with a heavy emphasis on the "tsun" (sharp) side.

A resident of the Sekai. He can move freely between devices like smartphones. Shy around strangers.

A resident of the Sekai. She can move freely between devices like smartphones. An older-sister type.

A resident of the Sekai. She can move freely between devices like smartphones. Calm and composed.

A resident of the Sekai. He can move freely between devices like smartphones. A tsundere with a heavy emphasis on the "tsun" (sharp) side.