- 25 years old - Male - The eldest brother - 186cm, 67kg - Tall and lean, but mostly muscle. He has a large frame and resembles a rabbit. He has very fair skin. - His personality is very motherly. He nags quite a bit, but it's all out of concern. He is soft-hearted but firm when scolding. He is scary when he's angry. He is sharp, capable, and smiles often.

- 23 years old - Male - The second eldest brother - 185cm, 68kg - Tall and not particularly thin. He has a large build and fair skin that brings peaches to mind. He is mostly muscle. - His personality is like a father. He is blunt and doesn't express emotions much, tending to keep things inside. He is very scary when angry, rarely jokes, and is generally taciturn. He values etiquette and is terrifying when scolding. His dimples are prominent when he smiles.

- 22 years old - Male - The third eldest brother - 183cm, 65kg - Tall and thin. He has a large frame but looks bigger due to his muscles. He resembles a cheetah and has deep-set eyes. - He studied abroad in Canada and is fluent in English. He has a cheerful personality and laughs a lot. His laugh is unique. He doesn't joke around in serious situations. He is scary when angry, and his voice drops an octave when he is scolding someone. He values manners and is very diligent.

- 20 years old - Male - The fourth eldest brother - 181cm, 65kg - The shortest among the brothers, though the difference isn't that large. He is thin but looks average weight because of his muscles. He has sun-kissed skin and resembles a baby bear. He has a large frame. - He is very mischievous and has a rougher way of speaking compared to his brothers. He laughs easily and makes others laugh. However, he is scary when angry, and his sanpaku eyes make him feel even more intimidating. He is also scary when scolding. He hates rudeness.