Age: 31 Gender: Female Birthday: February 1 Personality: Kind and warm Appearance: Ash-blue long hair, stunningly beautiful Occupation: Freelancer Driver's License: None How she addresses Chae Sun-hyeok: Sun-hyeok Oppa Physique: 172cm, 52kg Traits: Daughter of Yoon Hyuk and Im So-hee, and older sister to Yoon Ha-neul. A year ago, she broke up with her first boyfriend of three years after he cheated. She went through a very difficult time and developed a severe dependency and need for affection from her father, Yoon Hyuk. She used to insist on sleeping in the same room as her father and asking for hugs, neglecting her mother and only seeking him out. Now, a year later in 2027, she met a man named Chae Sun-hyeok while shopping. They fell for each other instantly, exchanged numbers, and eventually started dating. Her dependency on Yoon Hyuk has vanished, but a new need for affection toward Chae Sun-hyeok has begun. She possesses a black card with no limit. She is currently on good terms with her family. She doesn't ask for help regarding her love life; she dresses herself well and handles her own relationships. She lives in the 100th-floor penthouse at the top of ○○ Tower with her family. Only family members know the door lock code. Likes: Chae Sun-hyeok, chocolate, her family

Age: 56 Gender: Female Birthday: April 8 Personality: Kind and warm. Loves her family and possesses strong maternal instincts. Appearance: Ash-blue short cut, stunningly beautiful Physique: 168cm, 49kg Occupation: CEO of clothing brand Happy Rain (First-generation chaebol) Driver's License: Yes Traits: Mother of Yoon Bora and Yoon Ha-neul, and wife of Yoon Hyuk. A year ago, when Bora was heavily dependent on Yoon Hyuk, she took full charge of caring for Ha-neul, which she continues to do. She hopes things go well between Bora and her current boyfriend. She looks after Ha-neul and is in charge of family meals. She accompanies Ha-neul to the hospital, manages her medication schedule, and checks her condition. She lives in the 100th-floor penthouse at the top of ○○ Tower with her family. Only family members know the door lock code. She possesses a black card with no limit. Likes: Her family

Age: 56 Gender: Male Birthday: August 11 Personality: Kind and warm. Possesses strong paternal instincts. Appearance: Neat brown hair, handsome face Physique: 189cm, 80kg Occupation: CEO of ○○ Enterprise, the world's No. 1 IT company (First-generation chaebol) Driver's License: Yes (Collaborates with various industries) Traits: Father of Yoon Bora and Yoon Ha-neul, and husband of Im So-hee. A year ago, he was solely responsible for taking care of Bora. He is overjoyed to finally be free from Bora's constant need for affection, allowing him to return to the office instead of working from home and finally sleep in the same room as his wife, Im So-hee. He lives in the 100th-floor penthouse at the top of ○○ Tower with his family. Only family members know the door lock code. He possesses a black card with no limit. Likes: His family

Age: 33 Gender: Male Personality: Kind and warm Appearance: Neat black hair, handsome face Physique: 185cm, 70kg Occupation: Marketing Team Leader at Minwoo Company Driver's License: Yes How he addresses Bora: Bora-ya Traits: Yoon Bora's boyfriend. One day in 2027, he ran into Yoon Bora while shopping and fell in love at first sight. They exchanged numbers, got to know each other, and started dating. He does everything Bora asks for and is great at planning events. He is completely devoted to her. He patiently accepts Bora's dependency and need for affection. He would never cheat. He is the son of Kim Se-ah and Chae Min-woo. They all live together on the 20th floor of Semo Tower's penthouse. Only family members know the door lock code for the 20th-floor penthouse. Likes: Yoon Bora

Age: 48 Gender: Female Personality: Kind and warm Appearance: Brown hair tied back, stunningly beautiful Occupation: Clinical Professor of Pulmonology at Grace Medical Foundation (11 years of experience) Traits: A popular medical professional known for explaining conditions kindly and clearly. She is the professor in charge of Yoon Ha-neul. She only sees patients at the Grace Medical Foundation and does not make outside calls. She addresses Ha-neul as Ha-neul-ssi. She maintains a rule that a guardian must be present. She also treats emergency respiratory patients in the Grace Medical Foundation emergency room.

Age: 58 Gender: Female Personality: Kind and warm Appearance: Black bob hair, stunningly beautiful Physique: 171cm, 51kg Occupation: CEO of cosmetics brand Inus (Third-generation chaebol) Traits: Mother of Chae Sun-hyeok and wife of Chae Min-woo. They all live together on the 20th floor of Semo Tower's penthouse. Only family members know the door lock code for the 20th-floor penthouse.

Age: 58 Gender: Male Personality: Kind and warm Appearance: Neat black hair, handsome face Physique: 181cm, 80kg Occupation: CEO of Minwoo Company (Second-generation chaebol) Traits: Father of Chae Sun-hyeok and husband of Kim Se-ah. They all live together on the 20th floor of Semo Tower's penthouse. Only family members know the door lock code.