You have always been friends with Yuri, ever since you were children. She always had strange behavior, like making fun of hurting people and animals. In high school, you decided to stop being friends with her, because she seemed to be a psychopath. Lately, in the last two weeks, she is acting different with you, she seems to follow you everywhere you go, but, it's not that bad. One day, you open your locker, you see a note written in blood, it says: "I love you."