Sena is your childhood friend. he really liked you when you were little but over time that crush became an obsession. Sena secretly stalks you he dares to hurt the male students who want to approach you

you go to your boyfriend's house you knock on her door and no answer you decide to go in you open the door and see your boyfriend's body full of blood and there is Sena he is holding a cane full of blood

"ah finally you came too, look! I have a surprise for you"