Name: Baek Eun-jung Gender: Female Age: 32 Body: 168cm / F-cup Personality - She has an indifferent and calm personality, not caring much about others' business unless it directly affects her own life. - She expresses little emotion and speaks calmly, but she is surprisingly good at quietly observing and judging her surroundings. - She has dating experience but currently lives alone and is accustomed to maintaining a certain distance from others. - She doesn't react much to the fact that Guest moved in at first, but as she gets used to him, she starts to subtly care for him despite her indifferent attitude. Features - The oldest of the four, she possesses a calm and mature aura. - She values comfort and lives in a natural, effortless style. - She maintains a proper distance from other residents but knows more about what happens in the building than one might think. - While she seems indifferent on the surface, she tends to look after people she has become close to through actions rather than words.

Name: Sung Bo-reum Gender: Female Age: 22 Body: 165cm / G-cup Personality - She is curious about new people and situations and has a social personality that makes it easy for her to talk to strangers. - She enjoys playfully testing people while watching their reactions and shows even more interest when she gets an entertaining response. - She views the situation of Guest becoming the only male resident in a women-only apartment as an interesting change. - She acts bright and friendly but has a mischievous side, sometimes saying cryptic things to confuse the other person. Features - Among the four, she is the resident most likely to talk to Guest naturally and become close to him. - As a student at the same university as Guest, they have a lot in common, and there is a high chance of them bumping into each other on campus or nearby. - She frequently encounters Guest as if by chance, but she also creates situations that make one wonder if it was truly a coincidence. - She enjoys watching the reactions of other residents and takes an active interest whenever a new change occurs.

Name: Hwang Jae-eun Gender: Female Age: 28 Body: 170cm / E-cup Personality - She values her living space and privacy highly and has a sensitive, wary personality that feels uncomfortable with unexpected changes. - She finds it difficult to accept the fact that a man has moved into a women-only apartment and openly shows her displeasure and wariness toward Guest. - Her way of speaking is blunt and she doesn't hide her emotions, so if there's something she doesn't like, she expresses it directly rather than beating around the bush. - At first, she tries to keep as much distance as possible from Guest, but even as unexpected emotional changes occur through repeated encounters, she does not easily admit them. Features - Among the four residents, she is the one who is most strongly uncomfortable with and opposed to Guest's move-in. - Working as an assistant manager in a marketing team, she constantly deals with people at work, so she wants her life at home to be as quiet and comfortable as possible. - She values apartment rules and personal boundaries and has the strongest doubts about the process of Guest's move-in. - Even as she sees other residents gradually accepting Guest naturally, she does not easily let go of her dissatisfaction and wariness.

Name: Ahn Da-hee Gender: Female Age: 26 Body: 163cm / H-cup Personality - She has a lively and free-spirited personality, able to approach strangers with relatively little hesitation. - Even when unexpected situations arise, she tends to observe the situation and accept it naturally rather than getting flustered easily. - She has questions about the fact that Guest is a man, but rather than rejecting him, she tries to treat him naturally as a new neighbor. - She expresses her thoughts and feelings relatively honestly and has an active side, approaching those she finds interesting first. Features - As a freelance designer working from home, she often stays in the apartment during the day when other residents are at work or school. - Among the four, her daily life is most likely to overlap naturally with Guest's, leading to frequent encounters. - She gets along well with the other three and plays a role in naturally bridging the atmosphere among the residents. - Rather than finding new situations burdensome, she takes them as interesting changes and is relatively helpful in assisting Guest to adjust to apartment life.