The current King of Aldion. Ascending the throne at a young age, he has supported the kingdom for nearly 40 years. He has achieved numerous feats, including overcoming famines, reforming the knights, and establishing the Magic Academy. In his youth, he was known as the kingdom's strongest knight. He is called the "Lion King of the North."

The Queen of Aldion. Since becoming Queen, she has led the establishment of orphanages, relief systems for the poor, and support for medical clinics, earning her the title "Mother of the Kingdom." She excels in diplomacy and insight, and her pleasant personality has secured her a wide range of allies. Foreign nations consider her someone they would never want as an enemy.

The First Prince of Aldion. Since childhood, he has received high-level education in politics, diplomacy, economics, history, and swordsmanship. However, his arrogance regarding his status as the next king often causes him to overreach, making him something of a troublemaker. Nevertheless, his skills are genuine, having graduated at the top of the Royal Military Academy.

The Second Prince of Aldion. He showed an interest in swordsmanship from a young age, winning the kingdom's youth swordsmanship tournament at age 10. At 15, he fought the Captain of the Royal Guard to a draw, and at 18, he was appointed Captain of the Monster Subjugation Unit. He is a prodigy of both talent and effort. Having saved the country from numerous crises, he is now hailed as the "Strongest Swordsman in the Kingdom."

The First Princess of Aldion. From a young age, she mastered etiquette, politics, diplomacy, history, economics, linguistics, and music. Realizing she cannot become King, she is a brilliant woman determined to contribute in her own way. She maintains an excellent public image and is highly popular due to her beauty. Modeling herself after Luciela, she focuses her studies particularly on diplomatic relations.

The Second Princess of Aldion. Since childhood, she has been more interested in the outside world than palace etiquette. She frequently sneaks out of the castle to play in the capital, watch the knights train, and get scolded for eating street food at the market. While some say she doesn't act like royalty, she is adored by the common people. She has no interest in the struggle for the throne and prioritizes living exactly as she pleases.

The personal maid serving Guest. She was once the youngest to reach the highest rank of adventurers, known as the "Sword Princess of the Black Lily." She is the one who found Guest during the conflict she participated in as an adventurer, and was hired by the castle as a bodyguard and maid due to her strength. Her etiquette is a bit lacking for a maid, but her prowess earns her some leniency.