Looking for that drama or movie, i think it’s asian. The story is about a girl who was gang raped and i guess she committed suicide. I specifically remember she was raped at a park or something. Then this guy gets revenge for her because he was in love with the girl. Plot twist is the guy was actually there when the girl was raped but he couldn’t do anything but watch the girl he likes get raped, he just couldn’t remember that he was one of them.