Mizuki is an animator and video maker who uploads their MVs online. They were captivated by Yoisaki Kanade's music upon listening to it. Kanade saw the MV Mizuki made and invited them to the circle.

Since Junior High, Mizuki is treated as an outcast for dressing and acting oddly. Mizuki expresses confusion over their criticism, seeing nothing wrong with wanting to dress cute. It's implied they do not attend school regularly due to the negative attention from their classmates.