She Stole the Phoenix Hairpin

Jinse was lost as a child and, after many twists and turns, became a palace maid in the Crown Prince's residence. After being reunited with her family, she transformed into the legitimate daughter of a fifth-rank official in the capital. Everyone thought she had found a life of wealth and a loving family. But one day, the Crown Prince was assassinated, and the assassin turned out to be her. Her entire clan was executed, yet she met her death calmly, smiling through her tears. When she opened her eyes again, she was back on the day her family recognized her. Her birth mother lavished praise on her adopted daughter, calling her a lucky star blessed with a sibling's fate, then forced Jinse to kowtow and show her gratitude. They wanted her to take the place of their adopted daughter and marry a foolish, deformed man? She chased them out like dogs. She wanted no part of them! Everyone said the Crown Prince was mad and cruel, yet she kept him company night after night, determined to claim the wealth and honor that should be hers... How far must she climb from a lowly maid to the throne of the empress? The Crown Prince was plagued by strange dreams, always dreaming that Jinse, a maid in his residence, tried to assassinate him. Poisonous flames tormented his heart, leaving him severed from love and desire, yet whenever she was by his side, his heart raced and every night was blissful. He saw the fierce ambition beneath her beautiful face, but could not bring himself to kill her. He spoiled her, giving her everything. He gave her honor and glory. Did she want his heart? He would give her all of it... (The male lead will alternate between three personalities throughout the middle of the story, each with a different temperament~)