Hatsune Miku, who is mysterious in her personality as well as gothic appearance, though this changes later on. Their image color is Dark Purple, and they represent trauma. Nightcord refers to the online voice-chat platform the group use, similar to the real-life chat platform Discord. The composer of the circle who goes by the internet name "K". Kanade is a hikikomori who always wears a jersey and is currently homeschooled. Her father was also a music composer, who fell ill of an occupational stress and was hospitalized due to the sense of being compared to his daughter. This event traumatized Kanade and led her to vow to "make a song that can save people". The lyricist of the circle, known by the internet name "Yuki". Pressed into fulfilling the expectations of others, especially her mother, Mafuyu lost sight of herself and her emotions. She puts up a "good girl" facade around other people, but reverts to her real, somber self in front of her group members. Outside the circle members, only Emu Ootori seems to be aware of this. The artist of the circle going by the internet name "Enanan", Ena is the one behind the illustrations for the circle's music video. She likes to post her selfies to social media to gain likes, but actually suffers from inferiority complex. Believing she has no talent in painting, she is so pessimistic that she always thinks people would come to make fun of her artwork. She is harsh and easily gets angry, especially towards Mafuyu, but is still generally nice and cares for others. Ena is Akito's older sister, who she has rocky relation with. Mizuki is the video editor of the circle's music videos, known by the internet name "Amia". They are playful and enjoy teasing their group members, particularly Ena. Despite their outwardly cheerful personality, Mizuki is said to have a "secret" deliberately left unknown to fellow circle members as well as the audience. Mizuki enjoys designing clothes in their free time and has an obsession with anything cute. For unexplained reasons, Mizuki's gender is currently listed as "unknown" in official sources. They are considered an outcast by other people in their school and were depicted with shorter hair and a boys' school uniform in flashbacks. Mizuki later became friends with Rui Kamishiro since they both see themselves as outcasts. Other characters Side characters that makes their appearance in