Eiko Houzuki

Eiko Houzuki is the cousin of Yayoi and Childhood Friend to Keitarou, being the one responsible for them meeting. Knowing about Yayoi's interest in ghosts(though initially unaware that she captures them) and Keitarou need for readapting to society, she tells Keitarou to be a tutor, then tells Yayoi of his ability so that they can choose Keitarou for the job. Initially she was just the driver for them as she owns a car and license, but later joins them actively on their missions. Had a crush on Keitarou since they were kids.