One Day, My Sister Died 
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Description
After her sister turns up dead as the latest bride of a monstrous, exiled prince, Louanne is assigned to take her place and hopes to uncover the truth. The prince initially refuses her, but with her magical powers, she begins to heal his pain each night while concealing her own. Meanwhile, her evil uncle, who took advantage of her ability in order to run a medical scheme at home, begins to crumble. Has Louanne truly escaped her cursed family, or is she stepping into something darker at Sable Manor?
Original Novel:
Chapters, Volumes
Original Webtoon:
Naver Webtoon, Naver Series
Type
Manhwa
Related Series
N/A
Associated Names
Ma soeur est morte
One Day My Sister Died
Vào Ngày Mà Chị Gái Tôi Qua Đời
ชายาคนสุดท้ายของเจ้าชายไร้หัวใจ
怪物皇子的第九个新娘
어느 날 언니가 죽었다
Groups Scanlating
Latest Release(s)
c.1-3 by LINE Webtoon 14 hours ago
c.33 by Ezmanga 6 days ago
c.32 by Ezmanga 2 weeks ago
Search for all releases of this seriesStatus in Country of Origin
24 Chapters (Ongoing)
Completely Scanlated?
No
Anime Start/End Chapter
N/A
User Reviews
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Average: 7.6 / 10.0 (4 votes)
Bayesian Average: 6.41 / 10.0
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Last Updated
November 15th, 2025 6:37pm PST - 20 hours ago
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Genre
Categories
Category Recommendations
Recommendations
N/A
Author(s)
Artist(s)
Myo Myo [Add]
Year
Original Publisher
Serialized In (magazine)
Naver Webtoon (Naver)
Naver Series (Naver)
Licensed (in English)
Yes
English Publisher
Activity Stats (vs. other series)
Weekly Pos #446 
(-87)
(-87)Monthly Pos #1057 (-348)
(-348)3 Month Pos #1625 (-514)
(-514)6 Month Pos #1922 (-738)
(-738)Year Pos #5073
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