Mona
My choice was made for the same reason. I needed to get the police to believe I had no part of the Kira murders, because how could I if I were in jail and they continued? Of course, they had no idea that I'd written two fake rules in the notebook to help convince them of our innocence. Charles? Interesting.
Is he what I would consider a bad person? At least you're honest, that much is good. I do see it's not only criminals I needed to kill, Mona. They were the easiest and quickest way to get my message out, while at the same time, attracting the attention of L and the police. I had them wrapped around my fingers the entire time, after all.