Hello, I need your help please. I don't remember the name of the manwha because my phone had a problem which deleted everything . It's a fantasy, ancient historical manwha. The MC is a slave who became one of the Emperor's concubine on the order of the Empress dowager. She's a princess from a destroyed clan or something and she has partially lost her memories. The emperor actually has a lot of concubines but can't have an heir because of the Empress dowager's political power and he's pretending to be submissive and powerless. The MC and ML are deceiving and using each other. Every time the MC touches the water, she grows wings and her skin becomes blue or something. She also has a childhood friend who's the prince of a clan who has ice abilities, and who told her that she was responsible for her clan's downfall. One scene I remember vividly is when the MC and ML got into a carriage and tried to kill each other, of course some of the members of the clan of ice also tried to kill the ML.