The Lonely King Imprisons His Heart: the Shadow Guard Enters My Arms

When we first met, he was a high-ranking prince, and she was one of the inconspicuous secret guards. When he was in crisis, as a secret guard, she resisted with her life. From then on, she appeared in his sight disguised as a man. As they get along day by day, they gradually become ambiguous. The aloof prince insisted on marrying her as his wife, regardless of the strange eyes of the world. What? What did you say? Are you a woman?