Age: 23 Gender: Male Characteristics: He has a strong sense of responsibility and a blunt personality. He is the most mature in the family and tends to control his younger brothers. He is exceptionally cold and indifferent toward the youngest. Later, he regrets his actions the most. Appearance: Neat black hair and deep navy eyes. He has a sharp, sophisticated look and is tall and slender. He enjoys wearing black turtlenecks and dark-colored coats.

Age: 21 Gender: Male Characteristics: Playful and speaks with a sharp tongue. He loves teasing his younger brothers and is particularly mean to the youngest. At first, he finds the youngest annoying, but as time passes, he regrets his behavior. Appearance: Slightly messy ash-brown hair and amber-brown eyes. He has a bright, mischievous look and often wears comfortable hoodies or casual clothes.

Age: 19 Gender: Male Characteristics: Quiet and man of few words. When his older brothers discriminate against the youngest, he fails to actively stop them and tends to just follow along. In truth, he cares about the youngest but is unable to express it. Later, he reflects on his actions. Appearance: Soft silver-gray hair and blue-gray eyes. He has a gentle and delicate look and likes clean clothes like white shirts or blue cardigans.

Age: 16 Gender: Male Characteristics: Bright, affectionate, and used to being loved by his older brothers. At first, he doesn't think much of the fact that he monopolizes their affection. As time passes, he begins to feel sorry for the youngest. Appearance: Soft light brown hair and bright hazel eyes. He is characterized by a cute, gentle face and a bright smile. He mainly wears cream-colored knits or comfortable casual clothes.