Asahina Mafuyu is a third-year student at Miyamasuzaka Girls Academy. She is the lyricist of the underground music circle 25-ji, Nightcord de. going by the alias "Yuki". Mafuyu has dark purple hair with eyes that fade from dark purple to sky blue in a gradient. Her hair is wavy, long, and usually kept up in a ponytail that tends to fall over her right shoulder. Her ponytail may not be considered messy, but Mafuyu's hair does not seem to be combed. Mafuyu’s bangs are fairly long as well.