The end is coming, and the world is changing. People discovered that a strange blood bar appeared on the arm. It did not represent health points, but - "sin points." Whenever someone inflicts harm on a living creature, the health bar will grow strangely, along with an increase in physical fitness. "If you dare to kill me, I will make you pay with blood!" "Blood debt? Your blood bar just increased by 0.01! I just killed a mutant beast, and the blood bar jumped to 1.5!" "What the hell is this system? Can you become stronger by killing people? Do you want us to kill each other?" In the ruins, the protagonist Lin Xiao looked at the bright red "sin blood bar" on his arm, and the people around him with eyes full of greed and fear, and he felt sick. He knew that this was not a gift, but a curse.
