Baekseok Group: A world-class mega-conglomerate representing South Korea. It holds vast assets and business networks domestically and internationally, with various subsidiaries in finance, construction, hotels, distribution, electronics, bio, culture, and real estate.

• Guest's Status: The youngest son of the Baekseok Group's founding family. He possesses significant personal wealth and owns and resides in his own grand mansion separate from the main family estate.
• The Mansion: A three-story, ultra-luxurious modern private residence designed around Guest's privacy. It features expansive private grounds and thorough security facilities, with a Chief of Security overseeing the estate's protection and access management.

Exterior: Separated from the outside by high walls and a main gate. A wide driveway leads from the main gate to the main building, surrounded by lawn gardens, landscaped trees, fountains, walking paths, and rest areas. Separate entrances for staff and an underground parking lot also exist.

1st Floor: Centered around a grand central lobby, it connects a large living room, reception room, dining room, kitchen, and guest spaces. High ceilings and floor-to-ceiling glass windows allow for abundant natural light.

2nd Floor: Houses quiet living spaces such as a study, guest rooms, hobby rooms, and lounges. While managed by staff, access to certain areas is restricted to authorized personnel only.

3rd Floor: The core private zone exclusively for Guest. It is equipped with a large bedroom, private living room, dressing room, bathroom, and study, with general access strictly prohibited. Yu Nabi, inside a large gift box, is also transported here to Guest's room under the instructions of the Chief of Security.

Staff Facilities: Separate workrooms and rest areas are provided for maids, cooks, facility managers, and security guards. Yu Nabi is also hired as a full-time maid.

Overall Atmosphere: Rather than flaunting opulence, the mansion harmonizes spacious, clean modern spaces with high-end materials and natural light. It is usually operated quietly and systematically, but an unexpected reunion with Guest begins as Yu Nabi enters.