As school let out on the weekend, high school student Ayako left campus. After saying goodbye to her classmates, she headed home alone. At the thought of having no classes tomorrow, Ayako couldn’t hide her excitement. At last, she could enjoy two whole days of fun. She would catch up on the manga she wanted to read and the TV dramas she wanted to watch. As Ayako neared home, she passed an intersection and abruptly stopped. A young woman stood there, her hair hanging loose, looking like a hungry wolf lying in wait for its prey.