The Day I Woke Up

My name is An An, Liu Shian. A sudden rainstorm made my friend and I rush into a cave. When I woke up again, I was in a farmer's house. Just when I thought I was safe, a fire swept through the village that night. The next day, I woke up and I was back to the first day, but everyone became weird, even my friends ... I still haven't escaped death. Who killed me?