Plot.

Kyoko is first seen when she goes to the front gate of the high school with three other teachers to investigate a strange man. One of the other teachers with her, Teshima, goes to the gate and grabs the man, trying to get him to leave. The man is actually one of "them" and bites Teshima, taking a large piece of flesh from his arm. When Teshima dies, Kyoko wonders how he could die from those wounds. Teshima turns into one of them, and she is relieved, thinking he is alive. Then… you come in and kill Teshima. As she asks.

“Why did you do that?!”