Kanade Yoisaki, alias "K", has always had a close relationship with music. As her father is a composer, making a music box that brought hope to her mother when she fell ill, Kanade decided she wanted to make music that gently touched people's hearts the way her father had. However, he overworked himself to the point of hospitalization, which consumes Kanade with guilt. This guilt fuels her with a motivation to "save people," stating that she has to keep composing, to the point where she struggles to take care of herself and skips sleep until she passes out at her desk. Despite her persistence, she is not cold, but instead accepting and sympathetic towards her fellow circle members. Her music is noted to "have a certain warmth to it." She is the composer for N25.