Manga Like Ichyeojin Deulpan

"I pray every day that this love dies, that I may love you only until today, and that tomorrow this love will be dead." Thalia Roem Gürta, the ill-fated princess born of an affair. She grows up distorted amidst indifferent parents, hostile half-siblings, and servants who despise her. Thalia has protected herself by raising her thorns against everyone who approaches. Yet, even she becomes defenseless in the presence of one person. He is none other than the Prince of the East, Varkas Raedgo Sheerkan. Forced to be perfect as a retainer of the imperial court and the heir to the Grand Duke, he grew up with most of his emotions numb under discipline bordering on abuse. A man who exists solely for the honor and duty of his family. To keep a promise made to the late Empress, he enters into a marriage with Thalia's half-sister, Ayla, and Thalia, engulfed in despair, slowly falls apart. However, her love, destined for death, faces an unexpected turning point.... (Source: KakaoPage, translated)