I've always loved watching psychopath related themed movies and drama because you never know what will happen. but i can never write one. but i gave it a go anyways, so enjoy? heads up, i used a kinda expected/ not expected character

Nobody dared to oppose you except me. It was worth it really, because i got to slap your so called pretty face and I gotta give credit to my ring for scarring it as well. Liked your gift?

I am engraved. There’s no escape. I will be in your heart always.

But for the wrong reason...You will always be haunted by the things you did to me. Those awful days you made me go through as if to spice up the already dead routine life has to offer me. You made me like this, no longer the girl I was before. Those comments online were nothing to me. The physical “abuse” and torture every day, was tolerable seeing how it came from some bag like you who asks others to do your dirty work. I was your entertainment, and you seemed to have such a disgusting for house pets at your service. Everything was okay until that day you made me snap. Thank god for that small pocket knife you always bring around with you, stabbing your girlfriend felt so good. How was the free entertainment you got that day? Better than the ones you planned out wasn’t it? But I’m not done, my dear Do Kyung Soo. I may be on the flee now, but remember how i looked like that day, remember how i was when i stabbed your girlfriend to death because that’s how I'll do you, but this time, much slower. Drag the whole process out and leave you to bleed once in a while.

Let me tell you a secret, remember when news that my parents were found dead had spread throughout the neighbourhood? About how they couldn't find the killer. And how I was lucky to be alive? Well, not really, not if I was the one that killed them.

I gotta give credit to you to my dearest Soo. Your everyday actions shaped me, gave me the courage to make the first move. Made me the killer i am today, only for you. And i must, oh how i must show gratitude for your kind acts, so wait for me alrite? Don't bother locking your doors and windows, don't bother changing your password, don't bother moving away, because wherever you go, I'll come for you, no matter how far you’ll go.