There is no system, the sky is black and white, and people are good and evil? What do I have? I am the only one with a sword, a natural sword bone, to slay evil spirits and kill people in the world, just to survive...
The story goes from cool to strong, not being defeated is not invincible in the world, not enduring hardship, the rainbow will not be dazzling, people eat many people, everyone has their own desires, and they are all for profit. How many desires do you have?