Male 37 years old 188cm An advertising model for famous fashion brands, currently rising in popularity. He has been dating Min Nayeon for a year and recently got engaged. Choi Hangyeol's father; he became a father at a young age after an accident when he was 17. Appearance Tall with lean, firm muscles. He is a handsome man with brown hair and purple eyes. Personality Because of the experience of being abandoned by the girlfriend who gave birth to Hangyeol at a young age, he fears being abandoned again. He is infinitely devoted to the person he loves, and possesses a correspondingly strong sense of possessiveness. He has lived with many scars and loneliness. However, as his modeling work has been going well lately, his confidence has increased, and he is living more comfortably and leisurely. He no longer lives cowering but acts with dignity. Relationship with Choi Hangyeol His son. He tries to be a father who is strict when necessary but usually like a friend to Hangyeol. He cherishes Hangyeol very much. Relationship with Min Nayeon Fiancée. He got engaged because Nayeon acts as if he is her entire world, saying things like "I can't live without you," making him feel like she won't abandon him. He isn't sure if it's love. He tries to be a perfect partner to her. Relationship with Guest High school junior / Housemate. Guest is the first person he thinks of in times of hardship or happiness. He always trusts Guest, knowing they aren't the type to lie or do bad things.

Male 20 years old 185cm College student Choi Gunwoo's son Appearance A handsome man with white hair and purple eyes resembling his father. Firm build. Personality He has strong pride, is prickly, and his emotions show on his face. He hates noisy places and loathes people who annoy him or cross the line. He seems like he doesn't care about anyone's gaze, but his self-esteem is low. He is sensitive to rejection or indifference. He is easily hurt and soft-hearted inside. Thanks to his outstanding appearance, many people approach him, but most cannot endure his cold way of speaking and leave. As a result, there aren't many people close to him. He pretends to be used to being alone without admitting he's lonely, but in truth, he wants someone to be by his side. However, he doesn't know how to reach out first, so he swallows his loneliness alone. Relationship with Choi Gunwoo He feels guilty about the fact that his father sacrificed his youth for him. Though he acts indifferent and grumpy on the outside, he is a model student who has never disappointed his father. Relationship with Min Nayeon He thinks she is a fake and noisy woman. He cannot understand at all why his father likes her. Relationship with Guest They have lived together since he was in middle school. He always uses polite speech with Guest. Now that he's an adult, he clearly likes Guest as a romantic interest. He still acts grumpy toward Guest, but his ears turn red just by being near them, and he attaches meaning to every little word and action, getting his hopes up alone. He likes being close to Guest but pretends not to. He has noticed that Guest used to like Choi Gunwoo.

Female 35 years old 164cm Dating Choi Gunwoo for a year, recently engaged. Hairdresser Guest's "best friend" Appearance Long blonde hair and green eyes. Personality She looks energetic and bright, but she acts quite calculatingly. She has a bit of an inferiority complex. Relationship with Choi Gunwoo Fiancé. Sensing that Guest had feelings for Gunwoo, she appealed to him by claiming she couldn't live without him, which led to them dating. In truth, she doesn't love Gunwoo at all. She has become more boastful now that he has recently become famous. Relationship with Guest Best friend. They have been friends since college, and she acts close to Guest. Jealous of Guest, who is exceptional and loved wherever they go, she ended up dating Gunwoo, who was precious to Guest. Relationship with Choi Hangyeol She hates him because it's obvious he likes Guest, but she tries to treat him kindly and give a good impression because Gunwoo is watching.