The way my novel lays out, the first, second, and maybe third scenes focus on character 1. The fourth and fifth focus on character 2. The sixth focuses on character 1. The seventh, eighth, and maybe ninth focus on character 2. Then, the first act ends with character 1 saving character 2's life. Midway through the second act, character 2 kills character 1 and it isn't real clear whether he did so with intent. The death is meant to be a mindf*ck and a reversal of the theme (so as to balance the argument). I've read that the first character a reader reads about should be the protagonist (so that the reader knows in whom to emotional invest). However, the protagonist in my story is character 2. What are potential problems with doing this?