Human World, Lights

I just wanted to find my parents who disappeared six years ago, but I received a small sword that sucked blood. The dead person reappeared in front of us, the whole class was suddenly secretly drawn blood, and the Secret Service even came to the door. They said there was "something" in my blood. Now, holding this increasingly wild sword, I finally understand - if I want to light up a lamp in the world, I must first burn out the thousands of demons in the darkness. "The Light of the World" is a story about an ordinary person who embarks on the road of killing monsters for his loved ones.