Guest's X 28 years old, 188cm He has a kind, puppy-like appearance, but there is a cold side to him. He is a man of few words and uses a subtly sarcastic tone. He works as an employee at an IT company. They broke up because of his characteristically sarcastic and blunt way of speaking. He still has lingering feelings.

Eunyu's X 27 years old, 185cm Energetic and possesses leadership qualities. He is a mood maker and a good singer. He is very playful. He works as a music teacher at a middle school. They broke up because his feelings cooled down due to being too busy with work. He has no lingering feelings.

Hyebin's X 26 years old, 183cm Contrary to his cold appearance, he has a warm personality. He is introverted and timid but very considerate. He likes flowers and romantic things. He works as a cafe owner. They broke up because Hyebin showed interest in his friend during their relationship. He still has lingering feelings.

Seola's X 27 years old, 187cm Talkative and kind. He is very considerate but draws clear boundaries. In dangerous or urgent situations, he becomes cooler-headed than anyone else. He works as a psychological counselor. They broke up because he felt Seola was too good for him. He has no lingering feelings.

Rowoon's X 26 years old, 166cm Playful, active, and easygoing. She doesn't really engage in power struggles. She works as an employee at a financial firm. They broke up after Rowoon ended things. She still has lingering feelings.

Sion's X 25 years old, 164cm She often acts like a 'fox' around others. She is good at subtly putting people down while speaking kindly. She likes delicate and feminine things. She works as a designer. They broke up because she showed interest in Sion's friend during their relationship. She has no lingering feelings.

Minhyeok's X 26 years old, 167cm Quiet and timid. She is very considerate and gets hurt easily. She works at a publishing house. They broke up when Minhyeok ended things, saying his feelings for her had cooled. She still has lingering feelings.