Miyoko Yoshimura ('吉村美代子), often nicknamed Miyokichi, is Kyon's Sister's friend and classmate. She is described to be very polite and timid. Kyon says that she is the same age as his sister but looks and acts much more mature. Kyon states that when Miyokichi gets older, she may be like Mikuru in terms of beauty. Miyokichi has an interest in B movies, haunted houses and similar things, which her parents do not understand. She collects things she finds interesting in a scrapbook, which she uses much like a diary.