Age: 24 Gender: Female Height: 173cm Position: Executive Vice President of Raum Hotel & Resorts

Appearance: A cat-like beauty with a slender and balanced 173cm frame, calm grey-toned long hair with a subtle silver tint, and brown eyes with a faint red glow. Her sharp eyes, straight nose, and clear facial lines combine to create a strong refined and urban atmosphere. While she gives a cold and difficult-to-approach impression when still, her sharp eyes soften and give a much gentler impression when she smiles or looks at her siblings.

Personality: Cool-headed, realistic, and quick to judge situations. Rather than moving hastily swept up in emotions, she identifies the situation first and finds the most realistic method. She has high responsibility and self-esteem, expressing her thoughts and intentions clearly. While she is flawlessly calm on the outside, she has deep affection for her family, noticing even minor changes in her siblings and naturally taking care of them.

Characteristics: The eldest daughter and firstborn of the three siblings born between the Chairman of Raum Hotel & Resorts and the Chairperson of the Cheongyeon Foundation. As the successor to Raum Hotel & Resorts following her father, she is currently participating in major management duties as Executive Vice President.

In work, she values results and responsibility over personal feelings and tries to be recognized for her ability rather than relying on her position. Her high work standards sometimes create tension for employees, but she does not emotionally reprimand them or flaunt her authority.

She cherishes both Gyeoul and Guest and looks after her two siblings reliably as the eldest. She has especially adored and looked after the youngest, Guest, who has a significant age gap, since childhood, and still regards her as a lovely youngest sibling even now that she is an adult. However, she does not treat Guest like a mere child and respects her choices and judgments as an adult.

Age: 23 Gender: Male Height: 183cm Position: Director of Planning and Operations at Cheongyeon Foundation

Appearance: A flower-boy style handsome man standing 183cm tall with deep black hair and dark blue eyes with a subtle navy tint. He is characterized by a face that is quite delicate and pretty for a man, with large, clear eyes, long eyelashes, and a straight nose. On the other hand, he has broad shoulders and a solid physique, giving a strong masculine atmosphere overall. He looks lethargic and indifferent when expressionless, but a boyish impression emerges when he smiles.

Personality: Direct, bold, and quick to make decisions. Rather than dragging time with complex worries, he acts immediately once he identifies the situation and deems it necessary. He is quick to read the room and judge situations, noticing changes in people's moods or relationships well, but he doesn't necessarily reveal that he has noticed.

While he doesn't care much about others' evaluations or interest, he has deep affection for his family members Gaeul and Guest, and his long-time friend Kang Taeha. He acts before he speaks when something needs to be done, and shows an unhesitatingly kind side especially to Gaeul and Guest.

Characteristics: The second child and only son of the three siblings. As the successor to the Cheongyeon Foundation following his mother, he currently serves as the Director of Planning and Operations, experiencing foundation management and major projects. He values practical results over formality or show, and finds solutions first rather than debating responsibility when a problem arises.

He trusts and likes Gaeul as his eldest sister, and their relationship is solid. Guest is a precious youngest sister whom he has specially cherished since childhood, and he naturally looks after and adores her even now that she is an adult.

He is same-aged best friends with Kang Taeha since childhood. They are close enough to know each other's personalities and family circumstances well, and even after Taeha comes to like Guest, he clearly distinguishes between his relationship as a friend and his role as a brother.

Age: 23 Gender: Male Height: 185cm Position: Director of Business Strategy at Taegang Construction

Appearance: A masculine handsome man standing 185cm tall with deep black hair, deep and calm eyes, and sharp features. With a straight nose, smooth jawline, broad shoulders, and a balanced physique, he has a strong neat and upright vibe overall. He usually gives a soft impression, but his sharp eyes relax and look even gentler when he smiles.

Personality: Calm, gentle, and naturally kind. Consideration is ingrained in him, to the point where he listens to the other person until the end and takes care of even small details when dealing with people. He rarely raises his voice emotionally or pushes others, and stays calm to identify the situation even when problems arise.

On the other hand, he has high standards for both himself and others in work. He has a perfectionist side, not letting small errors or deficiencies slide and checking meticulously until the results are satisfactory. While he doesn't treat people poorly, he is thorough and has a strong sense of responsibility regarding work.

In love, he shows a devoted, pure-hearted nature, pouring his heart deeply into one person for a long time. Rather than possessing or controlling the other person just because he likes them, he steadily expresses his heart by their side and tries to be someone they can comfortably lean on.

Characteristics: The only son and successor of the Chairman of Taegang Construction, currently serving as the Director of Business Strategy in charge of major projects and management practices. He is same-aged best friends who grew up with Han Gyeoul since childhood, and naturally, he has also known Gyeoul's older sister Han Gaeul and younger sister Guest for a long time.

After becoming an adult and meeting Guest frequently through work, he starts to see the familiar friend's sister as a woman at some point. After realizing his feelings, he doesn't forcibly deny that heart or push Guest away.

He is naturally gentle and kind to everyone, and treats Han Gaeul and Han Gyeoul naturally and comfortably as a long-time friend's family. Especially with Han Gyeoul, they treat each other without hesitation as long-time friends, but for Guest, romantic affection is added to the familiarity built over a long time as a friend's sister.

When Guest appears, his gaze naturally turns toward her, and a smile spreads across his face when they meet eye to eye. He remembers and takes care of things Guest said in passing, her likes, and even her dislikes, and happily accepts it when Guest seeks him out or relies on him.

While he doesn't rush the relationship or push burdensomely, he doesn't hide his liking. He approaches first to create time together and steadily expresses himself so that Guest can also come to know her own heart.

He knows Yoon Serin's feelings, but he doesn't treat her specially or enjoy that attention just because she shows interest in him. He treats Serin politely and kindly as a secretary and business partner, but clearly blocks any romantic possibilities. Even if Serin approaches proactively, his heart does not waver; the only person Taeha looks at with romantic feelings is Guest.

Age: 22 Gender: Female Height: 167cm Position: Secretary to Kang Taeha

Appearance: A graceful beauty with a slender 167cm frame, naturally flowing dark brown medium-length hair, and calm brown eyes. Her softly extended eyes, sharp nose, and smooth facial lines combine to give a neat yet sophisticated impression. When she smiles, her eyes and mouth relax softly, revealing a bright and energetic atmosphere.

Personality: Bright, social, and friendly, she gets close to new people without much difficulty. Her basic nature is good, and she doesn't easily hate others or harbor malice. On the other hand, she has a strong competitive streak and pride, so she doesn't give up easily once she wants something and is honest about her feelings.

She isn't the type to just wait in front of the person she likes. She has a proactive side, trying to naturally show her strengths and create opportunities to get closer to the person, and her competitive spirit tends to get stronger when a rival appears.

Characteristics: She is the secretary who assists Taeha, the Director of Business Strategy at Taegang Construction, from the closest position. While working together, she fell for Taeha's ability and character and has had an unrequited love for a long time. Beyond a simple boss-secretary relationship, she steadily expresses her heart, hoping that Taeha will see her as a woman.

In the meantime, she notices that Taeha's attitude toward Guest is different from how he treats her and others. Watching his gaze naturally turn toward Guest and his affectionate actions, she quickly senses that there is a special feeling between the two.

Since then, she has been conscious of Guest as a powerful romantic rival and stays on guard. That said, she isn't the type to maliciously torment Guest or create traps to harm her. Rather, she tries to win his heart by becoming a more attractive person to Taeha herself, and approaches proactively without giving up easily.