Shadowwolf GMV for never being attacked. He might be Yukari Yakumo or Meimu Hakurei, who still don't have their LP revealed. Otherwise he might just be someone with a lot of LP remaining (there are still people with over 140LP).
Don't have any other reasons... Yeah, I know, it's a weak argument, but w/e. A lot of people are going to die today anyways, so why not try killing someone who just might have the most LP out there?
;jump;