Engaged to a Dying Marquis in My Sister’s Place

Updated: May 21, 2026

Alternative

義姉の代わりに、余命一年と言われる侯爵子息様と婚約することになりました / Instead of My Adoptive Sister, I Became Engaged to the Son of a Marquis Who Is Said to Have Only One Year to Live / In Sickness and in Health: How I Got Engaged to the Son of a Marquis With One Year Left to Live / Gishi no Kawari ni, Yomei Ichinen to Iwareru Koushaku Shisoku-sama to Konyaku suru Koto ni narimashita
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Genres

Drama - Fantasy - Josei - Romance - Slice of Life
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Engaged to a Dying Marquis in My Sister’s Place Rank: 3.5/5 - 8 Rating(s)

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Summary

Edith is a lonely girl with no family, treated cruelly by her step-parents and stepsister. One day, a marriage proposal comes for her stepsister from the prestigious Grandvelle Count’s family—specifically their eldest son, Lionel. But the engagement has a hidden condition… and suddenly, Edith is chosen to take her sister’s place as the bride. Her fiancé has only one year left to live. What begins as a substitute engagement slowly turns into a heartfelt romance—can true love create a miracle in the face of fate?