Akagawa Jirou: Majo-tachi no Nemuri

You work as a ordinary office worker. One day, you get a mysterious call to your office phone. A shaky female voice is on the other side almost whispering "....he...lp...me...murder...". Then the call ends. During the night you have a strange dream, a childhood friend is talking directly to you, lamenting her situation. You wake up an look at the newspaper. There is an article about the same childhood friend missing. In order to help, possibly save, your childhood friend, you set out into a village in the mountains where she has been working as a teacher..