At the age of twenty-six, Lin Shixu bought a bouquet of white chrysanthemums in front of his father's grave. The sky cracked and strange beasts descended. He awakened the mythical ability - time and space. The system says that by killing monsters and upgrading, you can go back to the past and reverse life and death. So he walked alone in the wilderness with a space-time blade, regaining lost territory and killing foreigners. No Virgin, no heroism, no moral kidnapping. He is a street kid and a flower grower. When he gathered enough energy to return to the ICU where his father died, he discovered the cruelest iron law of time and space—death is irreversible. But he had another way back. A single female protagonist, a fluid system, constant reversals, and a high-energy start.