In her past life, Duke Casis Esteban swept Sally off her feet and took her in as his mistress. However, she was living in a nightmare when Duchess Elysee Esteban plotted to ruin her life and turn all the nobles against her. Now, Sally has a second chance to turn the tables on the cold duke who used her to end his unhappy marriage. She agrees to be the duke’s mistress only in appearance. Meanwhile, Duke Esteban finds Sally’s intelligence impressive, and his alluring dreams of her have him wanting to drop the fictional part of their arrangement.
Original Novel: 
R15: <a href="https://series.naver.com/novel/detail.series?productNo=4639831" title="https://series.naver.com/novel/detail.series?productNo=4639831">Naver Series</a>, <a href="https://page.kakao.com/content/51418534" title="https://page.kakao.com/content/51418534">Kakaopage</a> 
R19: <a href="https://ridibooks.com/books/777049421" title="https://ridibooks.com/books/777049421">Ridibooks</a>, <a href="https://series.naver.com/novel/detail.series?productNo=3924441" title="https://series.naver.com/novel/detail.series?productNo=3924441">Naver Series</a>, <a href="https://page.kakao.com/content/61165992" title="https://page.kakao.com/content/61165992">Kakaopage</a>
Original Webtoon: 
<a href="https://page.kakao.com/content/61083908" title="https://page.kakao.com/content/61083908">KakaoPage</a>, <a href="https://webtoon.kakao.com/content/%EA%B0%80%EC%A7%9C-%EC%95%A0%EC%B2%A9%EC%9D%98-%ED%99%94%EB%A0%A4%ED%95%9C-%EC%9D%BC%EC%83%81/3274" title="https://webtoon.kakao.com/content/%EA%B0%80%EC%A7%9C-%EC%95%A0%EC%B2%A9%EC%9D%98-%ED%99%94%EB%A0%A4%ED%95%9C-%EC%9D%BC%EC%83%81/3274">Daum</a>
Original Webtoon: 
English: <a href="https://tapas.io/series/the-glamorous-life-of-the-fake-mistress/info" title="https://tapas.io/series/the-glamorous-life-of-the-fake-mistress/info">Tapas</a> 
Japanese: <a href="https://piccoma.com/web/product/136308" title="https://piccoma.com/web/product/136308">R15</a>, <a href="https://piccoma.com/web/product/136309" title="https://piccoma.com/web/product/136309">R19</a>
Notes: 
- The novel was originally R15, with a R19 version later being released after its completion. The webtoon follows the R15 version. 
- Special chapters were released to celebrate the launch of the webtoon. As of now, they're only available on KakakoPage.

Read the comic The Glamorous Life of the Fake Mistress online, along with others like The Beginning After the End, Solo Leveling, Omniscient Reader's Viewpoint, Jujutsu Kaisen, The Greatest Estate Developer, Revenge of the Baskerville Bloodhound, The Swordmaster's Son, After Ten Millennia in Hell, I’m the Max-Level Newbie, My Blasted Reincarnated Life

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