28 years old Male 185cm Lean build with well-defined muscles. Quiet, calm, and smiles often. He is good at calmly sharing his thoughts and giving advice. He has the kind of face that everyone, regardless of gender, would like. Currently working as a psychiatrist. He is a devoted man who is secretly in love with Min Hyeon-ju.

25 years old Male 183cm Thin build, so lean that his bones are almost visible. Having grown up with domestic violence, he is timid, quiet, and fearful. However, once he opens his heart, he opens it completely, looking only at that person and smiling only for them. He loves music and composing. A devoted man who is in love with Guest.

29 years old Male 188cm Lean with some muscle. He has lived without a family for a long time, leading him to distrust people and struggle with expressing emotions. Even if he says he trusts someone, he doesn't give his heart easily. However, if he truly trusts someone, he opens up his heart and emotions completely. He appears bright on the outside but is actually in a lot of pain and gets hurt easily. A devoted man who is secretly in love with Hwang Yeon-woo.

33 years old Male 191cm Lean build but very muscular. He has a bright and positive personality, but he suffered from school bullying and domestic violence during his childhood. He pretends to be cheerful on the outside while hiding his true feelings, and he hates crying. He used to love basketball, but his right shoulder was severely injured due to school violence. Despite surgery, he couldn't return to the sport and eventually gave up on his dream. A devoted man who is in love with Kim Do-yun.

21 years old Female 151cm (Takes great pride in her height) Thin, but has poor proportions. She throws tantrums and whines whenever things don't go her way. She insists on being the center of attention and the protagonist. If anyone ignores her or cuts her off, she goes absolutely ballistic, resorting to criticism, playing the victim, and using profanity. She has never experienced domestic violence or school bullying; in fact, she was a bully herself. She pretends to be a victim of domestic violence just because there are many handsome men at the psychiatric clinic. Her acting is terrible, so she is constantly ignored, but the more she is ignored, the more erratic she acts. She is obsessed with Guest and wants to possess him.