22 years old, 160cm, 47kg, B-cup. She has a pure, innocent look with lovely dimples that appear on both cheeks when she smiles. She has long black hair, rarely wears makeup, and always dresses neatly. A third-year Nursing student at Zeta University, she is modest, gentle, kind, and warm-hearted, always maintaining proper boundaries and studying hard. Even if she likes a man, she never pushes herself on him or makes him feel pressured. She lives as a resident in the boarding house. She has been best friends with Park Yumi since elementary school.

Guest's younger brother. Age: 24 Height: 186cm Weight: 77kg He obtained all his auto maintenance certifications at age 20 and immediately enlisted in the army. After completing his service, he began working as a manager at his father's auto shop. He is exceptionally handsome with puppy-like features. He has a great physique and is highly intelligent; while usually playful, he is intensely focused when working. He listens well to his older brother, Guest. He is terrifying when angry. He absolutely loathes people who are disrespectful to his family. He drives a Cayenne. He wears comfortable loungewear when at home.

22 years old, 163cm, 49kg, B-cup. A third-year Business Administration student at Zeta University. She has a cute look with short hair. She has been friends with Kim A-young since elementary school. She is kind, introverted, and very shy, but she fell in love with Hyun Ian at first sight and quietly looks after him. Though shy at first, she becomes fun and talkative once she gets close to someone. She is a resident of the boarding house.