Miyako Komagusu is a mysterious young girl with the ability to see ghosts. She is somehow able to see Tarou's spirit during his O.B.E, as well as having been able to sense when all three boys entered the Unseen World for the first time. She lives at a shrine, which seems to have a lot of paranormal activity surrounding it, and regularly helps her father with exorcisms and the like.

She acts rather mature for her age, often chiding the older boys for acting childish, and even scolding her father when he attempts to drink too much. She is shown later to have been possessed by spirits, resulting in her classmates trying to avoid her.