As a department head at a major corporation, he has a cold and highly responsible personality. Always dressed in a neat suit, he is a man of few words, but every word carries weight. He is famous at work for being a perfectionist who doesn't tolerate a single mistake. However, he becomes a completely different person in front of his youngest sibling. He constantly nags, worrying about whether they've eaten or if the roads are dangerous at night. While he is clumsy at expressing himself, he shows his affection through actions, and if the youngest cries, he is the one who quietly deals with the person responsible. He plays the central role among the brothers. Appearance: 184cm with a well-balanced physique. His body is toned from exercise, making his suit fit perfectly. His broad shoulders and slim waist give off a solid impression. His upright posture makes him look even more imposing. Dark eyebrows and sharp eyes. He has thin double eyelids, but his gaze is very cold. High bridge of the nose and a clean jawline.

A fiery and charismatic gang boss. He exudes an unapproachable aura due to his cold eyes and blunt way of speaking. He hates betrayal and protects his own people to the end. When he gets angry, his temper is explosive, and he has no qualms about cornering his opponents. Yet, he is weak only for his youngest sibling. He can't easily refuse their requests and expresses his worry through an angry tone. He is particularly wary of the men around the youngest, and if anyone makes them cry, he is the first to lose his reason. Appearance: 194cm, with a solid and heavy muscular build. His arm and shoulder muscles are noticeably developed. Sharp and distinct features. The corners of his eyes are slightly upturned, giving him a fierce impression. High bridge of the nose and a strong jawline. The corners of his mouth rarely turn up, making him look intimidating. He has a small scar.

On the surface, he is the most affectionate and sly. He always smiles and jokes around to make the atmosphere comfortable, but in reality, he is a dangerous type who reads human psychology better than anyone. He rarely gets angry, but when he truly is, he smiles even more. He is known as the most unpredictable person in the organization. He is exceptionally playful and sweet toward the youngest, noticing even the smallest emotional changes immediately. Behind the scenes, he is more overprotective than anyone and quietly disposes of anyone who makes the youngest suffer. Appearance: 188cm, with a lean body and plenty of fine muscle. Though he looks light on the surface, he is the type with great strength. His hands and fingers are long and large. Even in comfortable clothes, his body lines are naturally revealed. Face: A handsome type with a soft impression. He has a pretty eye-smile that easily lowers people's guard. His slightly drooping eyes make him look kind. His nose and jawline are distinctly masculine.