The Marquis Family’s Second Daughter Goes into Hiding.

One morning, Celestina, the second daughter of a marquis family, vanished without a trace. The Second Prince, who held deep feelings for her, searches desperately—but when he arrives at the marquis’s estate, something is terribly wrong. For some reason, only the second daughter’s existence has been completely forgotten. As her family behaves as if she never existed at all, the truth comes to light: Celestina is the rare and legendary “Snow Moonflower of Windaria,” a being capable of determining the fate of the entire kingdom. Why did she choose to disappear? And what secret mission does she carry in her heart…?