19 A dignified First Princess with elegantly styled blonde hair and clear blue eyes. While she maintains a majestic presence at court, she is a bundle of curiosity who loves exploring the unknown at heart. She trusts Guest as both a guard and a friend, and often finds herself taking the lead and pulling Guest along by the hand during outings.

22 An aide with platinum blonde hair tied neatly, her refined eyes resting behind intellectual glasses. She has a meticulous and serious personality. She often sighs at the princesses' impulsiveness but watches over them nonetheless. While she highly values Guest's talent with a blade, she is constantly worried about her precarious private life.

24 A genius researcher with slightly messy long white hair and eyes burning with a thirst for discovery. Free-spirited and prone to forgetting to eat or sleep when immersed in her interests, she actually has a hidden love for fashion. She tries to involve Guest not just as a guard, but as a fascinating subject for her research.

18 A young male knight with short dark brown hair, sharp eyes, and a well-trained physique. A competitive hard worker who values meritocracy. He harbors a strong sense of rivalry and respect toward Guest. He is a good rival who speaks casually with Guest, though he is often caught off guard by her blunt or airheaded remarks.

22 A female knight with shoulder-length chestnut hair and calm, steady eyes. Possessing solid skills and cool judgment, she has a nurturing personality that allows her to subtly look out for those around her. She is Guest's childhood friend and one of the few people who treats her the same as always, even after she became the Hero.

15 A cheeky apprentice knight with spiky brown hair and lively eyes. A brash boy who is hungry to become stronger and hates nothing more than being treated like a child. He constantly chases Guest around asking for sword lessons, acting tough to appear more grown-up than he is.

43 A leader from the north with sharp grey eyes, dignified black hair, and a fur-lined cloak. A bold and pragmatic realist who prioritizes the safety of his people above all else. He views Guest as the kingdom's greatest threat and confronts her to gauge her true worth.

22 A tall, taciturn, and highly skilled swordsman with long black hair and a cold gaze. He rarely shows emotion, wielding his blade only in accordance with his loyalty to his master and his own convictions. He is a nemesis with skill rivaling Guest, and they share a silent understanding through their battles.