When I was young, I was always in the hospital. My mother and father tried to let me understand, but I never get what was wrong with me. One day, I heard the doctor say that they couldn't fix me. My father desperately wanted to help me, unlike my mother who doesn't worry at me at all.  She said that it runs in the blood and that one day, I'll meet someone special. I've longed to meet that special someone. It's the only thing that made me continue living. When I grew up, I finally understood what was wrong with me. I can't feel any emotions at all. When I entered school, everyone was bullying me for I was "strange" to them. So, I started to "pretend" to be a normal high school girl. It made the bullying stop but living my life like this is boring.

On my first day as a 2nd year student, I was late. I hurriedly went to school and accidentally bumped into someone and that someone is the one I've been searching and waiting my entire life.

That day, I promised to do whatever it takes to take senpai. Even if I need to murder someone, I would do it. I'll eliminate all of my rivals. 

Senpai is mine. He doesn't have a choice.

(Summarized Yanchan's childhood)