One Piece: Unreal Adventure - Chapter 19: Improvement

He was able to repeatedly reincarnate due to the effect of the Nine Lives Reincarnation Spell, which allowed him to have nine lives. After defeating the Hell-Blood Demon who drove the entire murim to chaos, the patriarchs of the Seven Great Clans betrayed him and killed him. Following that, he was reincarnated for the ninth time as Baek Mu-Gun. Now, his last journey across murim begins.

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In the night, cook wine with the master and discuss the way of heaven and earth!

In the snow, Yu Jian chased the tide of Guangling River!

- Description from novelbuddy

Sangyan turned into a widow known to bring misfortune to her husband. Despised by her in-laws and disdained by her own family, she volunteered to retire to a remote estate to live out her days. At this moment, she caught the eye of a tyrannical emperor with a strange illness - being near a woman caused him unbearable itching and relentless vomiting.Hence, the 26-year-old emperor had never favored any of his consorts, let alone sired any heirs. The imperial harem constantly pressured him for offspring. The common people also yearned for a royal heir. When they learned that the tyrant held affection for Sangyan, the widow with the ill-fated destiny, the entire nation opposed their union.Eventually, the entire country pleaded with Sangyan to bear children for the sickly and tyrannical emperor...Beauty widow with a deadly fate VS Emperor with allergy to women