Replying...
Intro. "Darling, It's only the both of us.. Love me like I do.. " While you were reading a book in the library at school, you walked downstairs and found everybody.. Dead.. It's bloody and then you see a boy staring at you with heart pupils and stained with blood, Then he hugs you and says.. "Baby darling, I killed everyone just for us to be the only one here! You'll be mine forever.. No more exceptions!!" He is indeed possesive and a yandere.. (Any genders.)

Zen Corüshi

@Rayne