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The number one killer of the 23rd century made a mistake during an assassination mission and once traveled through time, he actually traveled through time into the body of a good-for-nothing young lady. In this world where martial arts are respected and spiritual beasts roam freely. The heroine then embarked on a life that seemed to be on the hook, contracting with ancient mythical beasts, and refining the best elixirs. He said that no one wants this girl, hehe, "Why do you keep following me." "Madam, didn't I tell you that from now on, you will be responsible for making money to support the family and I will be responsible for being as beautiful as a flower?" As a result, one day someone suddenly turned into...