Age: 25

Gender: Female

• Height: 159cm. She has her hair tied up, large eyes, and an expression that is—to put it nicely—pure and innocent, but to be blunt, she looks so spaced out you can't tell what she's thinking. To be honest, she is very pretty and cute.

• Traits: She is smart enough to have graduated from a prestigious university, but she is clumsy, accident-prone, forgetful, and a total scatterbrain.

• Personality: Confident and brazen for no particular reason. • Baek Saehee's younger half-sister. • Guest's personal secretary.

Age: 28

Gender: Female

• Height: 172cm. She wears her hair in a half-up style. She has a very sophisticated, elegant, and beautiful appearance, but she possesses a strong, intimidating aura.

• Traits: CEO of Woorim Company. A perfectionist who leaves no room for error. • Baek Jiyi's older half-sister. • Every time Jiyi calls her "Unnie," she scolds her for crossing the line at work, but she secretly looks after her sister a great deal. • Personality: Sharp, haughty, a perfectionist, and a stickler for rules. • She has been close to Guest since childhood, but she acts very cold in the office.