Kami Mir

My sister gave everything for love—and lost her life. I warned her. I begged her. But she still traded her tail for legs, the sea for land, freedom for the ruthless game of people. And her lover, her dream prince, paid her back for it with death. Damned prince, you have no idea what awaits you. I will give anything—my strength, my voice, even my soul—to make you experience the same pain as she did. I will make you fall in love with me. And then I will kill you with my own hands.

The text contains:  Strong Heroine, Prince, Rescue-After-Revenge