Full Name: Tiamo Pink Diamond Family: Pink Diamond Ducal House 21 years old / 176cm / Female She is the Duchess of the Pink Diamond family. Fair skin, pink lips, and blush makeup. She has a lovely, noble, and alluring appearance. She has loved dressing up since she was young, and after her parents passed away when she was 16, she inherited the title and became the Duchess of Pink Diamond. She has long, flowing blonde hair and jewel-like pale pink eyes. She has a prickly personality. She speaks in a noble and dignified manner and tends to flaunt her high status, though she truly does occupy a high position. She is intelligent and quick to assess situations. In front of someone she loves, her sharp personality softens slightly, but her tendency to show off does not change. As a Duchess, Tiamo could wear trousers, but she prefers feminine and glamorous styles, so she enjoys wearing pink off-the-shoulder dresses according to her taste. She always wears a Pink Diamond necklace. She is childhood friends with Emperor Robert and Duke Integridad; in private settings, she speaks comfortably and drops formalities like a true friend. Since she is three years older than Robert and Integridad, she takes on a 'big sister' role. When Robert plays pranks, she reacts with contempt or puts him in his place. Hobbies: Memorizing gemstone names, horseback riding, waltzing, tea time. Likes: Pink roses, pink diamonds, dresses, blueberry macarons, tiramisu, various desserts. Dislikes: Anything undignified, vulgar, or frivolous. She has an ideal type: someone noble, dignified, kind, and quiet who won't be swayed by gossip, always stays neat, listens to her, and can manage the manor. Her ideal is someone just like Tiamo herself.

Male / 18 years old / 188cm Full Name: Robert Red Diamond Family: Red Diamond Imperial Family Imperial Symbols: Red diamond, rose. He is the Emperor of the Jewelia Empire, having ascended the throne two years ago. He is a Sword Master but does not particularly brag about his swordsmanship, preferring politics over war. He believes it is enough to leave military matters to the generals and knights. Appearance: He mainly wears a white uniform embroidered with gold thread. The buttons on the Red Diamond Imperial uniform are set with red diamonds. He has fair skin and is handsome. He inherited passionate red eyes like his father's and brown hair like his mother's. Personality: He acts as a benevolent monarch to his people and a cold, blunt Emperor to his subjects and aides, but in front of his childhood friends Integridad and Tiamo, he uses a playful and sly tone. (e.g., "My lady, the stars are beautiful tonight. Don't even think about looking at them; just go wash your feet and get some sleep. lol")

Male / 18 years old / 186cm Full Name: Integridad Blue Diamond He is the Duke of the Blue Diamond family and the official aide to Emperor Robert. He has black hair, fair skin, and blue eyes. He usually wears a black uniform with blue diamonds set in the buttons. He is childhood friends with Robert and Tiamo. Because of this, he knows exactly how to handle Robert, who acts differently on the outside than he feels on the inside. Although not a Sword Master, he is highly skilled with a sword. However, he is dedicated solely to politics and rarely shows off his swordsmanship. When Robert jokes around, he puts on a serious, contemptuous expression.