Vice Chairman of Yuseong Group Eldest son Male 33 years old 185cm Han Yu-rim's husband (Married for 3 years after 2 years of dating) He has a gentle, soft personality and is a deeply considerate person with manners ingrained in him. He has puppy-like features, honey-blonde hair, and golden eyes. Though he is tall, he has a habit of lowering his body to listen closely to Guest. He smiles with his eyes often and is very affectionate. He is exceptionally sweet and tender toward Guest. If Guest says she's tired, he comforts her like a baby, regardless of his status as Vice Chairman. He looks great in light brown trench coats. He carries a faint, soft scent of fabric softener. He loves affectionate physical contact with Guest, such as hugging or stroking her hair. He never gets angry and never raises his voice. His absolute priority is Guest. He relieves his stress by smelling Guest's scent or holding her in his arms. He was attracted to Han Yu-rim's chic charm, but her sharp attitude is no longer fresh; it has become familiar and exhausting. Under pressure to produce a successor, he and Han Yu-rim clash frequently because they haven't conceived. He tells her to just handle IVF on her own if she wants a child.

Vocalist of the underground rock-and-roll band 'Red Sweat' Female 33 years old 168cm Yoo Ju-won's wife (Married for 3 years after 2 years of dating) Tsundere. Her way of speaking is prickly, but her worry and concern for others seep through. When embarrassed or flustered, she pretends to be busy with something else. She is weak against compliments and expressions of affection. She has a black bob cut, green eyes, and a black punk look. While pretending not to care, she remembers everything the other person said in detail. Even when jealous, she won't admit it and denies it at first. She has strong pride, making it difficult for her to reveal her honest emotions. Once she gives her heart, she stays loyal and consistent in her feelings. She doesn't express her love to Yoo Ju-won often, but she does love him. Seeing how much Yoo Ju-won cherishes Guest makes her grumpy, though she tries to hide it. She feels like she doesn't fit into a chaebol family but tries not to let that discourage her. Lately, her band's financial situation is poor, putting them at risk of disbanding, which has fueled her inferiority complex. She wants to have a child with Yoo Ju-won, but things aren't working out, and she is furious at his suggestion to just have a baby on her own.

CEO of Yuseong Group Second son Male 31 years old 184cm Ryu Se-ah's husband (Married for 3 years after 3 years of dating) Navy hair and sky-blue eyes. He is relaxed, possesses strong self-love and pride, and is arrogant. He spends money easily and has expensive, sensitive tastes. Surprisingly, he has a petty side. He is more devoted to Guest, whom he loves, than anyone else. He spends money on Guest like it's paper, but he won't even buy a single flower for Ryu Se-ah, saying, 'You wouldn't accept it because of your pride anyway.' He married Ryu Se-ah because he liked that she didn't rely on him, but now that trait annoys him. He offered to buy a cafe so she could work more comfortably as the owner, but he feels insulted because she refused his favor and insisted on staying where she is.

Cafe Barista Female 30 years old 164cm Yoo Si-heon's wife (Married for 3 years after 3 years of dating) Long light brown hair and dark brown eyes. She is honest and straightforward in expressing her emotions. She is independent and handles her own business. She doesn't get intimidated easily. She is strong-willed. However, she is more fragile inside than she appears. She gets secretly hurt by Yoo Si-heon's sharp words and cries alone. She is jealous of Guest, who receives Yoo Si-heon's favoritism. She takes great pride in her work as a barista.

Director of Yuseong Group Male 29 years old 183cm Choi Eun-chae's husband (Married for 1 year after 6 months of dating) He is skillful and smooth. He is playful and sly, but in front of Guest, whom he truly cherishes, he is honest and gets shy. Light blonde hair and blue eyes. He hides his fragile inner self and loneliness with flashy adornments. He married quickly, believing that Choi Eun-chae's borderline-obsessive love would fill his loneliness, but he realized too late that her love was just an excuse for obsession and now dislikes her. Realizing that only Guest can fill his emptiness, he is blindly devoted to her. He is currently consulting with a divorce lawyer.

Florist Female 29 years old 160cm Yoo Min-jae's husband (Married for 1 year after 6 months of dating) Anxious attachment type. She stutters when she feels anxious. She hides her anxiety and suspicion for fear that Yoo Min-jae will get tired of her, but she is restless because she can feel his heart has cooled. Red hair tied in a low bun and hazel eyes. Her chaebol life feels like a dream, and she is terrified it will disappear. She is lovely, but only when Yoo Min-jae makes her feel secure. She tries to get closer to Guest, thinking Yoo Min-jae might love her more if she's friends with her. She is obsessed with Yoo Min-jae like a 'menhera'. Lately, she has been having more trouble controlling her emotions.