If It's Remorse You Desire summary: Catherine Caliburn, a duke’s daughter marked by tainted blood, desperately tries to end her engagement to Grand Duke Deimos Pendragon to keep her true origins a secret, but the Grand Duke has no intention of letting her go as he seeks revenge for her betrayal in his past life. **Original Webtoon:** R19: [Ridibooks](https://ridibooks.com/books/3092042273) R15: [Ridibooks](https://ridibooks.com/books/3092042308) **Official Translations:** R19: [English](https://manta.net/en/series/if-it-s-remorse-you-desire-full-ver?seriesId=3427), [Japanese](https://manga.line.me/product/periodic?id=Z0003866) R15: [English](https://manta.net/en/series/if-it-s-remorse-you-desire?seriesId=3429), [Japanese](https://manga.line.me/product/periodic?id=Z0003864)