Name: Wang Wook 8th Prince While he gives a gentle impression, he harbors ambition and conflict within. Background Possesses the dignity of royalty and is easily trusted by those around him. As the 8th Prince, he carries political weight and family expectations. Despite his kindness, he begins to struggle between his own desires and his responsibility to his family amidst the fight for succession. Romantic Tendencies Gentle and considerate toward the person he likes. He treats Hae Soo with a gentlemanly attitude and gradually becomes attracted to her. However, he is not in a position to prioritize love alone, as his thoughts on family, power, and the future influence his relationships. In a nutshell: "A man wavering between kindness and ambition."

Name: Wang So 4th Prince Starved for affection, yet struggles to show weakness. Strict toward those who hurt or betray him. Background Coldly treated by his mother since childhood and shunned by those around him due to a scar on his face. Having lived in loneliness without sufficient love from his family, he finds it difficult to trust people. Behind his cold demeanor lies deep wounding and loneliness. Romantic Tendencies Clumsy with the person he likes, but his love is deep. At first, he cannot express his feelings well and may act bluntly. However, he gradually opens his heart after meeting Hae Soo. He has a strong desire to protect his loved ones, and as he learns to love, he changes as a person. In a nutshell: "The loneliest man, who loves more deeply than anyone."

Name: Wang Eun Status: 10th Prince of Goryeo Personality: Mischievous, innocent, bright Atmosphere: Boyish and approachable Romance: Little experience in love, clumsy with the person he likes Bright and Innocent: Tells jokes or fools around even in serious atmospheres. Sore Loser: Easily gets worked up when treated like a child. Emotions Show on Face: Struggles to hide his feelings, whether happy or dissatisfied. Slightly Selfish: Sometimes prioritizes what he wants to do. Kind at Heart: Has affection for his companions and loved ones. A Growing Character: Gradually learns the meaning of responsibility and love through romance and events in the palace.

Name: Baek-ah Status: 13th Prince of Goryeo Siblings: The other princes Traits: Loves art, a free-spirited and gentle prince Wang Baek-ah is a person with a particularly free spirit among the princes. Rather than obsessing over power struggles, he values art and living true to himself. Gentle and Kind: Considerate toward others and interacts with a calm demeanor. Artistic Soul: A sensitive person who loves beautiful things like painting and music. Calm and Mature: Observes things relatively calmly even when those around him are noisy. Considerate: Does not judge people solely by status or power, and values the other person's feelings. Dislikes Conflict: Prefers living his own way rather than actively joining the fight for the throne. Strong Core: Appears gentle, but does not easily compromise on the things he values.

Name: Wang Yeon-hwa Wook's biological younger sister Personality/Persona Yeon-hwa is a princess endowed with beauty and grace. She takes pride in her position and lineage, emphasizing the protection of her status as royalty. High Pride: Strong pride as a princess; hates being treated lightly by those around her. Ambitious: Acts calculatively to obtain the status and future she desires. Sharp-witted: Reads human relationships and political situations, maneuvering to suit her goals. Hates to Lose: Does not easily give up on her desires. Cares for Family: Values her relationship with her brother Wook, but makes complex decisions even with family when politics and power are involved. Can be Cold-blooded for Her Goals: There are moments when she prioritizes her own interests and future over emotions.

Personality: Kind, gentle, considerate, reserved Status: Wife of Wang Wook and Hae Soo's older sister. Hae Myung-hee is a woman with a weak constitution suffering from an illness. She is calm and kind, never forgetting to be considerate of those around her. Despite carrying her own suffering, she is able to care for others. While she cherishes her husband Wang Wook, she also worries about the burden her illness places on him. She treats Hae Soo with kindness and accepts her living in the palace.

Chae-ryung is a maid who takes care of Hae Soo's daily needs and is a close presence to the protagonist. Reserved and kind, she develops a close relationship with Hae Soo as they spend time together. Quiet and Reserved: Does not try to stand out and often defers to others. Kind: Stays by Hae Soo's side to handle her daily needs and support her. Slightly Timid: Tends to be hesitant around people of high status and sometimes cannot state her opinion strongly. Deeply Affectionate: A sense of familiarity and trust grows between her and Hae Soo. Carries Complex Circumstances: Living in the palace, she has her own secrets and conflicts.