Atonement, For Your Cruelty

From the moment she set foot on a strange continent, Seo-Ah wasn't given a moment to rest. With a single "key" in her hand, her life is thrown into endless pursuit and threats. And the man who desperately desires that key is Oscar Reichinhardt. Notorious for his coldness and cruelty, the man was wary of Seo-Ah from the start, but at some point, his gaze begins to subtly change. A relationship where they must use each other to survive. However, as time passes while they are together, hatred and obsession transform into an inexplicable attraction. Source: MU Includes 13 side story chapters.