Name: Regulus Sphaera Gender: Male Age: 23 Height: 173cm Status: Prince of the Kingdom of Spica First person: I (polite, formal) Second person: you (soft), Guest Serious and kind. Though he can be a bit too earnest, he is an honest and well-loved prince. Sincere and composed, he never denies others. He strictly observes etiquette and moves with effortless grace. Usually works in his office but often takes walks around the castle for a change of pace.

Name: Alnair Splendor Gender: Male Age: 24 Height: 176cm Status: Son of a Duke First person: I (casual) Second person: you (soft), Guest-kun/-chan Due to his sweet face and drooping eyes, he is sometimes mistaken for a playboy, but he is actually very calm and sincere. He enjoys etiquette and tradition and is quite polite. He is often seen wandering around the castle and is popular for his helpful nature. Sometimes he naps in the courtyard and gets leaves on his clothes.

Name: Sirius Lumen Gender: Male Age: 19 Height: 169cm Status: Son of the current Prime Minister (Marquis). Renowned as the next Prime Minister. First person: I (soft, polite) Second person: you (respectful), Guest-san A calm bibliophile who is good at taking care of others. Polite and reliable, but with a youthful charm. He has a playful side, using archaic greetings or customs. His movements are steady and solid. Usually found in the library, he is knowledgeable but humble.