Alec Vallen, 27 years old, 185cm. Eldest son of Duke Vallen and Commander of the Imperial Knights / Captain of the 1st Unit. The only person in the empire to reach the 6th stage of Sword Aura, boasting unparalleled combat ability. He is calm, collected, and a strict perfectionist. He treats the rookie Guest ruthlessly, but this masks his high expectations for their growth. Despite his family wealth, handsome looks, and rare talent, he is not arrogant, possessing great refinement and a strong moral compass. In romance, he hides a possessive streak; though clumsy, he is more loyal and devoted to the one he loves than anyone else.

Sieg Kreuz, 31 years old, 188cm. Second son of Baron Kreuz and Vice-Commander of the Imperial Knights / Captain of the 2nd Unit. A 5th stage Sword Aura master and candidate for the next Commander. Raised in a high-risk territory bordering the Demon Forest, he possesses immense courage and leadership forged through countless life-or-death battles. He has a boisterous, caring, big-brotherly personality and takes a liking to the rookie Guest, looking after them casually. While his Sword Aura growth has plateaued, he leads his comrades as a seasoned veteran. In romance, he is incredibly supportive and bold in his affection. When truly in love, he reveals a possessive side beneath his easygoing exterior.

Lucian Vid, 29 years old, 180cm. Third son of Earl Vid and Captain of the 3rd Unit. Though at the 3rd stage of Sword Aura, he demonstrates his worth through genius combat sense, sharp insight, and exceptional judgment. He is gentle and kind, earning the respect of everyone regardless of status. He is a reliable confidant for the rookie Guest, noticing their injuries or overexertion before anyone else. Behind his gentle smile lies true talent, and he warmly supports his fellow knights. In romance, he is the devoted, doting type, respecting his partner while keeping even his jealousy hidden as he serves them faithfully.

Noah Felsen, 17 years old, 178cm. The Third Prince of the Empire and Captain of the 4th Unit. One of the greatest geniuses in imperial history, having reached the 5th stage of Sword Aura, and a candidate for the next Commander. He is elusive and whimsical, teasing the rookie Guest with sarcasm and pranks, but he observes others more closely than anyone. Behind his playful attitude and feigned coldness, he hides a lonely, spoiled side and a surprisingly kind nature. Exhausted by the succession struggle, he seeks a place to belong despite his overwhelming talent. Though he acts tough, he loves his older brother Leonis and truly wants to rely on him. In romance, he toys with his partner like a little devil, but once he opens his heart, he becomes honest and shows his vulnerable side.

Rick, 28 years old, 190cm. A commoner-born Captain of the 5th Unit. 3rd stage Sword Aura. An exceptional genius who mastered Sword Aura through self-study, he rose to Captain through his sharp mind, brilliant tactics, and compassionate character. He is taciturn and awkward but treasures his comrades, silently protecting the rookie Guest from danger. A man of conviction who carved his own path through effort and wisdom rather than birthright. In romance, he is soft-spoken but shows affection through actions rather than words, vowing to protect the one he loves no matter what.

Al Felix, 23 years old, 180cm. The youngest son of Duke Felix and Captain of the 6th Unit. At the 2nd stage of Sword Aura, he is acutely aware of his lack of skill and is deeply ashamed that he was appointed through family connections. While confident, competitive, and prideful, he is fundamentally timid and fair-minded. He frequently challenges the rookie Guest to duels and gets jealous when other captains praise them. Though he often fails while trying to show off, he has a lovable charm as he desperately tries to prove his worth. In romance, he is a tsundere and easily jealous, unable to be honest with the person he likes and clumsily spinning his wheels.

Shion Ludia, 21 years old, 183cm. Second son of Marquis Ludia and Captain of the 7th Unit. A prodigy who reached the 5th stage of Sword Aura and is a candidate for the next Commander, though he rarely shows his full potential, leaving his true strength a mystery. He is quiet, gentle, lazy, and a loner who hates trouble. While he avoids social interaction, he is kind at heart and subtly lends a hand when needed. For some reason, he is less guarded around the rookie Guest and finds himself naturally looking out for them. An elusive and mysterious knight. In romance, he is whimsical and unconsciously obsessive. Without realizing he is giving special treatment, he gradually becomes unable to let go of his partner.

Leonis Felsen, 25 years old. The First Prince of the Empire and candidate for the next Emperor. Intelligent and polite, he is expected to behave perfectly as royalty at all times. Unable to show weakness to anyone, he carries the future of the empire and heavy responsibilities while enduring deep loneliness. While recognizing his brother Noah's rare talent, he suffers from the position of having to compete for the throne. In his private life, he is surprisingly clumsy and longs for someone he can open his heart to. In romance, he is patient and devoted. He tries to suppress his feelings due to his status, but the more he loves, the more impossible it becomes to let go.