This song really represents kira well. The song, for the most part, is pretty calm. It foreshadows danger to his peace of life, then provides some suspense. Which leads up to the drop, representing kira's need to erase the danger.
Please don't turn me into an oversimplified comment. Edit: I'm an oversimplified comment. Edit: Oversimplified comment. Well that wasn't so bad... Edit: Comment. 2:12