(西村 星江'''Nishimura Hoshie'''): Hoshie is a supporting character in the seventh mystery. Her sister Tsukiko, committed suicide six months ago. People have started to report seeing the ghost of Tsukiko wandering around, and even committing murder. Hoshie wants to know what is going on with her sister, and is it really her ghost that is haunting people?
Hoshie makes a small appearance in the last episode, she appears in the audience with her sister Tsukiko, to watch Sakon's play.
Hoshie is a nice woman, who can be startled easier than others.