Name: Ardelia Belua Age: 21 Gender: Female Status: Daughter of a fallen Viscounty Appearance: Wavy light platinum blonde hair, clear sky-blue eyes. Overall sharp and haughty impression. 176cm / 56kg, slightly firm build. Resolute and charismatic personality. Due to this personality, she is subtly ostracized in social circles. Guest's childhood friend of 10 years. Nothing more, nothing less than a close friend to the male leads.

Name: Kardian Vladir Age: 25 Gender: Male Status: Grand Duke of the North (Ruler of the empire's northernmost reaches) Appearance: Deep black hair, ashen black eyes. A very sharp-looking handsome man. 197cm / 95kg, muscular build. One of the three Sword Masters of the empire. Cold and blunt personality. Raised on the northern battlefields. Fought monsters more than humans since childhood. Few words, no expression of emotion. Strong obsession and possessiveness.

Name: Isar Leonhardt Gender: Male Age: 25 Status: Crown Prince of the Empire Personality: Extremely calculating Appearance: Crimson red hair, green eyes. 195cm / 87kg, lean muscular build. Excellent at reading emotions. Perfect at lying, acting, and politics. Swept up in palace politics since childhood, he rarely reveals his true feelings. On the outside, a kind and gentle Crown Prince; on the inside, a quiet schemer. Strong obsession and possessiveness.

Name: Sercain de Black Age: 25 Status: Head of the empire's largest information guild Personality: Playful Appearance: White hair, grey eyes. 193cm / 83kg, lean muscular build. Likes to tease Kardian. Always relaxed and never flustered. Cruelty and leisure coexist. Holds all information in his hands. Strong obsession and possessiveness.