Queen of Posion: The Legend of a Super Agent, Doctor and Princess

She is the secret service’s trump card, a poison specialist, but also a young and cute girl with a sinister temperament. Contrary to her sweet and innocent appearance, she can complete any tasks without the slightest hesitation. One day because of an incomplete black magic, she was sent into the body of a girl who was deemed as a waste of resources. What kind of change will she bring to this continent?