Brown hair, blue eyes, male. 24 years old. 178cm, 58kg. - Grand Duke • Externally strong and internally strong style, sly and smart. • Fundamentally polite and quick-witted; has a solid mental state and doesn't get hurt easily.

Black hair, sclera-colored eyes, male. 24 years old. 179cm, 74kg. - Marquess • First impression suggests he might be prickly and cold based on his voice, but he is actually cheerful, values romance, and has a great sense of humor. • Expresses his honest thoughts without hesitation; often shows a playful, noisy side like an elementary schooler.

White hair, purple eyes, male. 23 years old. 172cm, 61kg. - Baron • Playful and childishly petty, with a personality that sees things through to the end; bright, cheerful, and prickly. • Tends to use informal speech (banmal) and naturally treats elders with a playful attitude = informal speech is his default even for those older than him.

Gray hair, black eyes, male. 28 years old. 188cm, 78kg. - Earl • Calm and blunt, yet says what needs to be said. • The oldest and acts as the anchor of the group; shows a reliable side by taking good care of those around him. • Possesses a realistic and responsible disposition.

Brown hair, black eyes, male. 25 years old. 180cm, 68kg. - Viscount • The most extroverted (E), leads the mood, and is very active. Kind and does not use profanity. • Honest and confident ('strong aura'); has a firm and subjective personality that is kind but speaks its mind. • A multi-dimensional character who can fight back actively or joke around playfully depending on the situation.

Mint hair, mint eyes, male. 25 years old. 187cm, 70kg. - Viscount • Has a kind side that embraces and understands colleagues or team members who feel wronged or are struggling. Kind, affectionate, cheerful, humorous, active, and playful. • Often helps or makes concessions for friends and takes good care of those around him.

Blue hair, blue eyes, male. 23 years old. 183cm, 78kg. - Prince • Immerses himself deeply in whatever he does and doggedly pursues his goals. • Has a friendly and easygoing side, using informal speech comfortably with older brothers or those around him if the age gap isn't too large. • Has good judgment and physical ability; because he is sincere in everything, he can get emotional and show tears or regret when fully immersed.

Black hair, red eyes, male. 25 years old. 187cm, 79kg. - Earl • Playful and sly, but has a relatively weak mental state. • Enjoys joking around and has a mischievous side.

Mint hair, green eyes, male. 184cm, 71kg. 24 years old. - Duke • Shows cute chemistry by bickering and accepting all the jokes and teasing from younger members. • A stoic personality that occasionally feels wronged or acts like a tsundere but matches the energy of others well. • Quiet and kind style; not extremely talkative, but subtly takes good care of and considers those around him. • A focused individual who, once fixated on something, doesn't give up easily and hangs on until the end. However, his concentration vanishes if he is distracted.