Nampyeonnim, Dasi Gyeolhonhae Juseyo!

Shurya Littenheim, a "half-noblewoman" rejected by high society, is only accepted by her husband, Grand Duke Kardi Esperand. As Kardi’s inherited powers begin to kill him, Shurya agrees to a deal to take his place and dies. She is reborn as her younger self and now seeks to reunite with Kardi once more. She aims to marry him again, but faces the challenge of preventing another tragic outcome.