Miri Yanagiba

A high school student in the same class as Higashida. At first Higashida thought she was a ghost because she was wearing a scarf and winter uniform during summer. It turned out that due to not wearing a scarf on the first day of school, she got a cold that developed into pneumonia. Since she missed her chance to make friends during the first weeks of school she hasn't gone to school once.

Apparently the old man that only Muranushi can see is her grandfather.