Tilsim Bertarini was born to be a mage. She sacrifices everything she has for the sake of the clan. As a Thunder princess, she knew it was her fate. No matter how cruel her destiny was, she knew she had to. Nevertheless, after the marriage with Axel Romanova, she suffers from a strange disease, ultimately blind, no longer capable of being a mage. Her half-sister, Eilidh Bertarini, stood in front of her: your blindness is caused by poison, but your clan elders planned it. Two can only keep a secret if one of them is dead-She is always a great threat to her clan, which she has been fighting for her whole life! And Eilidh Bertarini, her dear sister, was cheating on her with Axel Romanova behind her back! A heroic princess died at the hands of jealous ignorant morons. How absurd! When she woke up again, she was the daughter of a lieutenant, youthful and rosy. She was reborn as the daughter of a lieutenant. She will take back what she has lost in her new life, revenge! And the first time she met her rival from her previous life, "The greatest warrior." The story of a woman who can also be a great mage and can make a career like a man in the time of aristocracy. Although the female protagonist has the memory of a mage in her previous life, when she first came to her new body, she couldn't run physically. She couldn't have the strength. The process of growing up step by step makes people bloodthirsty. The role of the male lead is to accompany the female lead to grow and guide the female lead to become stronger. Especially the encountering of the heroine and the hero in the previous life, laying the groundwork for the heroine to be attracted to the hero in the present.