Doomsday Zombie Hunter System

My name is Liu Qi, and I'm an ordinary middle school student. One evening during study hall, the class representative kicked me out for fooling around in class. Feeling down, I went up to the school rooftop. That was when I saw something incredible. Dozens of streaks of fire suddenly appeared in the night sky. At first, I thought it was a meteor shower. I took out my phone to record this once-in-a-century sight, but then I saw one of the streaks of fire hurtling straight toward me.