The childhood friend and next door neighbor of "Hajime-chan." Many question why a model student like Miyuki is friends with a slacker like him. Deep down inside, Miyuki feels Hajime is not an idiot, and they seem to have a love that neither has yet fully expressed. Her birthday is November 24, as stated in "The Murderer From the Screen." She possesses remarkable logic and perception, as demonstrated by her "filling in" for him to solve a murder mystery in the live-action series while the latter was being warded for appendicitis, although she is obviously not as gifted as he is.