Yayoi is a kind-hearted girl who is very sheltered. She is confined to a wheelchair and relies on her close and dearest friend Kanako for support. She also appears to be the only person who Kanako does not resent. Yayoi is the story-teller in the storytelling parody vignettes in the anime. She quietly begins to tell her tale and often ends by beginning to say something stupid, which is promptly cut off. She plays the piano well.

Spoiler

Yayoi is another ghost, and her existence is fading which is why she is crippled to her wheelchair. In the past, she used to quietly observe Kanako and wished to reach out to her, but the other girl would angrily reject her. Yayoi was revealed to be a very sheltered, privileged girl but she never tried to pass off responsibility to other girls. Any time she tried to help Kanako, she was turned away. Her desire to become friends with Kanako was so strong that she eventually won over the other girl and they became close through Yayoi's kind, nurturing and gentle nature.