You Made Medicine to Extend Your Life, but You Made a Sequence Variant?

Sequence, monsters, potions, doomsday, pseudo-group portraits. . The dusty Pandora's box was opened by Ye Yan, who was terminally ill. Since then, magical potions that can change genes and give humans extraordinary powers have been flowing out of Ye Yan's hands. Variants with sequences that humans cannot imagine appear in this world. Then, the world fell into the apocalypse. . . . At first, he just wanted to live. After surviving. His mentality changed. He wanted to see it. Look at this world, look at the truth, goodness and beauty of human nature embodied by those struggling humans in the last days. Give them a magic potion that changes everything as a reward. As for why they are struggling in the last days? You don't have to worry about this.