Operation: Kill

I was a selfish brat

Overly-sensitive person, who was easy to cry

Easy to be mad

And easy to laugh as well

However one by one, things changed

9 years ago, I killed my tears

6 years ago, I killed my anger

And now, it's time to kill my smile

Won't you regret that last step

Which will make me an emotionless warrior

Who will always protect you by your side?