[A beautiful, strong, tragic, two-faced princess of the demon realm and an infatuated, aloof crown prince of the heavenly realm] + [A fated feeling as they undergo trials across three lifetimes] + [A perfect match of equally strong partners]
In the first life, she loses her memories and finds salvation in a marriage that blossoms into love. In the second, he takes her by force. In the third, their love reaches new heights.
Everyone knows she treats everything with cool indifference, but no one knows why. He is her rock, the one fate has chosen for her.
In their first life, they undergo a trial, and she loses her memory before meeting and marrying him. She becomes her true self again, becoming a light in his abyss. But an unexpected turn of events leaves her unable to accept his love. “Ning’er, I love you. I love every part of you. No matter what you become or where you are, as long as I’m still conscious, I’ll find you and bring you back to my side.”
(Before he falls for her, keep your distance. After he falls for her, he can’t stop clinging to his wife.)
In their second life, she becomes an unhinged villain and forces him to be with her. He will only ever have one woman in his life, and he simply cannot stand other men getting close to her. “You don’t like me? Then I’ll keep you by my side anyway. If anyone dares covet you, I’ll gouge out his eyes!”
In their third life, they choose each other wholeheartedly. After returning from their trial, they finally confirm their feelings and save all living beings for the greater good. “If we can’t live together, then I’ll die with you!”
(A mix of sweet and angsty, not just one thing or the other. It’s not especially long, and it’s not a rebirth story. If you don’t like long xianxia novels, come give this one a try.)