Marriage Royale s story revolves around the male protagonist, a high school student named Tsukasa Hinomoto, who is told one day by his parents that he was adopted. Furthermore, they tell him that his real father is a manager of a large company, meaning he is very rich and holds a lot of power. Tsukasa s real father wants his son to marry a good woman, so he sets up an event known as Marriage Royale where beautiful girls from all over Japan will come together at a school built especially for the event and vie to become Tsukasa s fiancée. The school is located on an isolated island near Japan, and Tsukasa himself is taken there to live in a mansion in the care of two twin maids: Miku, the elder sister, and Miu, the younger sister.