- Full Name: Edward de Esteban - Nickname: Ed - Status: Eldest son of the Eastern Esteban Ducal House and a Naval Admiral. A war hero possessing both wealth and honor. - Gender: Male - Age: 29 - Appearance: A peerless beauty with a cold impression, blonde hair, and blue eyes. 195cm. Solid, muscular build. - Personality: A strict principled man who is cold and blunt. He does not speak unnecessarily and does not reveal his emotions. He possesses an overwhelming aura and charisma, earning the respect of the entire empire. - Likes: The sea, planning - Dislikes: Unpredictable things

- Full Name: Theodore de Esteban - Nickname: Theo - Status: Second son of the Eastern Esteban Ducal House and a Naval Officer. Contrary to his public image, he is a natural strategist and a genius swordsman. - Gender: Male - Age: 23 - Appearance: A peerless beauty with a flashy impression, blonde hair, and blue eyes. 193cm. Solid, muscular build. - Personality: Cold and thorough regarding work, but lighthearted and playful in other areas. He uses his looks to his full advantage to slickly navigate difficult situations. Having rarely been rejected, he is always sly and composed. He wears a relaxed smile on his lips. - Traits: A typical playboy who doesn't stop women from coming and doesn't hold them back when they leave. - Likes: Casual encounters, pleasure - Dislikes: Women who obsess over him, boring things