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Fitting in with your family has never been harder. To escape her brothel, Grizz Benedict is offered a fake identity as the Virenhague family's daughter. Her new "brother" showers her with gifts, and soon he attempts to give himself to her entirely. Despite feeling that this will all end in disaster, Grizz wonders if she ought to just accept it...

Read manhwa If You Want a Fake Sister / The Duke's Imposter Sister / The lost princess of Grandia, Gris Benedict, had become a s*ave in a brothel at the age of nine. She was fortunate enough to have escaped her prison after eleven years. But the condition was to live under the grace of the House of Byrenhag.She had accepted so in order to survive; it was a worthy proposition.One day, she got a small, cute animal from her fake brother, the Lord Byrenhag. She thought it would be her first and last present from him, but then he kept bringing her bigger gifts.When the time came that he finally tried to give himself, Gris foresaw that their relationship would end in a catastrophe.

Following an uprising, the nine-year-old princess of Grandia, Gris Benedict, had gone missing. In fact, she ended up working as a maid in a brothel, really no better than a slave. She spent eleven years in that hellhole but was fortunate enough to escape her prison. Apparently, she looked similar to the youngest daughter of the House of Byrenhag who had also gone missing in the woods at a young age. Her "uncle" promised to help her escape the brothel if only she pretends to be the missing young lady, and Gris accepted living a lie in order to survive. One day, she is gifted a small, cute animal by her fake brother, the Lord of Byrenhag. She figured it would be her first and last present from him, but then he kept bringing her bigger and bigger gifts... If ever the time came that he try to gift himself, Gris foresaw that their relationship would surely end in a catastrophe. Note: The webtoon was released as R15, it's not R19 like the novel