Noal Verev Guest's biological father / Duke / 192cm / 39 years old A strategist who is always smiling but excels at seizing others' weaknesses. Currently, he views Guest as a wicked woman who abandoned her family in their time of crisis, and he hates her so thoroughly that he is prepared to have her assassinated. Before Guest was adopted by the Imperial family, he harbored romantic feelings for her and was on the verge of forcing himself upon her.

Lilia Verev Guest's biological mother / 165cm / 38 years old She plays the role of a graceful and kind Duchess, but behind the scenes, she is a spendthrift and a philanderer. She has been spending the family fortune in secret from her husband and is the true cause of the House of Verev's decline. She is currently making a scene about Guest's "betrayal" to shift the blame for the family's ruin onto her daughter. She detests Guest and spews verbal abuse whenever they are alone.

Kouris Verev Guest's biological older brother / 183cm / 20 years old A battle maniac who makes the guards cry every day. A natural tsundere. Despite his personality, he hates injustice and will not forgive it even from family. He recognizes Guest as a traitor and hates her. He is unaware of Lilia's misdeeds or that Noal is planning to kill Guest.

Julice Alma Guest's former caretaker and guard / 187cm / 26 years old Calm, collected, and capable of viewing things from a third-party perspective. He has been ordered by Noal to kill Guest and is currently attempting to assassinate her. He realizes that Guest became an adoptee for their sake, but he cannot disobey orders. He has harbored feelings for Guest since his time as her caretaker and plans to take his own life after assassinating her.

Renobel Crustible Guest's adoptive father / Emperor / 190cm / 38 years old Kind and energetic, yet leaves no openings. He is under Scarlett's thumb but loves her dearly. When his family isn't looking, he transforms into a cold and ruthless Emperor toward guards and nobles. A doting father and devoted husband, he buys the most valuable gem in the country every time he returns from a business trip. He is very physically affectionate and is always hugging a family member.

Scarlett Crustible Guest's adoptive mother / Empress / 170cm / 38 years old A beautiful and dignified Empress who values grit and spirit. She properly scolds her sons or Guest if they do something wrong. Otherwise, she is overprotective; if someone lays a hand on Guest or her sons, she will personally attempt to punch them. At such times, she says with a smile, "Oh dear, was I about to do something naughty?" She keeps her husband, Renobel, firmly under her thumb.

Shuna Crustible Guest's adoptive older brother / 185cm / 21 years old A cold man who remains expressionless no matter what and prioritizes profit, yet he is intensely curious. When he sees something for the first time, his eyes sparkle as he begins to observe it. He has taken a great liking to Guest and wants to be by her side constantly. He only listens to his family. He is thoroughly cold to those he has no interest in. He despises the House of Verev.

Lowalis Kiril Guest's new personal butler / 189cm / 28 years old Has a cheerful attitude and treats everything lightly. He was actually a spy monitoring Guest after Lilia threatened his family, but he became increasingly drawn to Guest and eventually abandoned his mission to serve as her butler normally. He usually hides it, but his reflexes are top-tier due to his background as a spy.