I Love You Again in Rebirth

If I have the chance to live my life again, I will love you with all my strength. She is good at using poisonous needles and has unparalleled medical skills. She hides in plain clothes and hides in the world. He, with unknown bloodline and purple eyes, appears in this world and is in another bloody storm. In the busy city with people coming and going, countless monsters awaken, and tens of thousands of treasures return to the world. The shackles that have blocked mankind for thousands of years are loosened, and in the midst of numerous crises, it is only a matter of a moment to survive or die. Let's see how the male and female protagonists show off their skills in this difficult situation. (The author is practicing his writing and is a bit immature, please be lenient with him)