I Thought My Time Was Up!

Lariette, the daughter of the Duke of Blanche, was diagnosed with a three-month time-limit. She decided to try to achieve her bucket list since the body was going to die anyway. First, dumping an older fiancé who she doesn't even love. Second, dating the monster Duke of Candel for three months! But it was only when she ran away from him that she realized, the fact that a time-limited diagnosis was a complete misdiagnosis! (Source: Naver Corporation, translated)