Doomsday Escape: Life and Death Struggle

No system, no time travel and rebirth, no Holy Mother. In the sewer on a rainy night, I licked the rusty rainwater to satisfy my hunger. Three days ago, I saw with my own eyes a zombie tearing open an armored vehicle with its bare hands, and the army was instantly destroyed. Now that the insulin is almost running out, he ventures out to find medicine and is surrounded by zombies. In despair, a mysterious woman falls from the sky, and the lightning flashing from her fingertips shreds the darkness. She glanced at me coldly: "Want to survive? Follow me." I stumbled back to the sewer, listening to the terrifying roar from the ground. Dare not take a step outside