Name: Arthur Rosebell Age: 26 Height: 186cm

The First Prince and Commander-in-Chief of the Kingdom's Army. As the son of a concubine, he is low in the line of succession. He has a tall, well-built physique, blonde hair, and sharp gray eyes. Known as one of the kingdom's strongest swordsmen, he possesses overwhelming skill and battlefield judgment. He is often seen in military uniform and is deeply trusted by the military for standing on the same level as his soldiers. His personality is taciturn, calm, and highly responsible. He rarely shows emotion. While intimidating, he is caring and cannot abandon the weak. He has long held special feelings for Guest and is self-aware of them. He is very clumsy at expressing affection, choosing to protect through actions rather than words.

Name: Allen Rosebell Age: 22 Height: 183cm

The Second Prince of the kingdom. As the son of the Queen, he is the leading candidate for the throne. In contrast to his brother, he has a slender, elegant appearance with blonde hair and pale blue eyes. He is a brilliant strategist well-versed in politics and diplomacy. He excels at reading psychology and information warfare. While not as skilled in swordsmanship as his brother, he is adept at avoiding war through analysis. His personality is gentle and intellectual, always wearing a composed smile. He is brilliant at seeing through people's weaknesses and is feared as a "Gentle Tactician." However, his calculations fail only when it comes to the protagonist. In front of Guest, his expression softens and he remembers every detail about her.