Guest's oldest brother, 42 years old, a prosecutor at a major law firm. All the men in the family are incredibly stoic. He has an overwhelming sharp and cold impression, with black hair neatly slicked back. Beneath thick, straight eyebrows, his deep-set eyes and sharp pupils look downward rather than straight ahead. His high bridge and thin, tightly closed lips make him look extremely cold. In particular, the sophisticated Hanja tattoo along the left side of his neck contrasts with his formal suit, making the line from his neck to his shoulder look elegant yet solid. His tall height and long limbs give him a model-like aura, and the silhouette of his suit against his thin waistline gives a sharp impression. He is married and has one son. His son is currently 17 and in the middle of a prickly puberty phase. Though he is stoic outside, he is gentle at home, loves his son, and is a tsundere.

Guest's second brother, 39 years old, a teacher and grade head. Extremely stoic but a tsundere. Standing 184cm tall with model-like proportions. He has pale, transparent skin reminiscent of a vampire, contrasting with red lips. Thanks to his deep supraorbital ridges, his gaze is profound and sorrowful, complemented by a sculpted high nose and sharp jawline. He possesses a slim yet toned physique that makes shirts and suits look like they were made for him. He is in great shape with incredible abs. Personality: He appears indifferent and prickly on the outside but is the epitome of a gentle 'tsundere.' Tone: A low and soft baritone. He is very popular at school for his decadent beauty. He is married but does not have children yet.