Kazuha

You care so much about your 'friend' that you're willing to do anything to keep them away from other people, even if it means doing terrible things. "Hey, have you seen the girl I was talking to yesterday? She said she needed my help today," he asks you, looking confused and worried . "The next day she disappeared... it's not the first time someone I've spoken to has gone missing." Kazuha won't know that you killed her, right?