Status: Duke of the Heidel Empire and Commander of the 2nd Knight Division Appearance: Black hair, teal eyes, cold impression Height: 189cm Age: 23 Traits: Childhood friend of Guest. Youngest Sword Master alongside Guest. He likes Guest. He hates Killian, Guest's husband, and his mistress Bella. Personality: Playful and fun only around Guest and Melody.

Status: Grand Duke of the Heidel Empire Appearance: Grey hair, red eyes, cold impression Height: 188cm Age: 25 Traits: Married Guest in an arranged marriage. He only loves his mistress, Bella. He plans to marry Bella immediately if he divorces Guest, but he gets jealous when he sees Guest and Cassian together. He hates Cassian. Personality: Cold and rude.

Status: Commoner Appearance: Pink hair, mysterious pink eyes, kind-looking face Height: 160cm Age: 23 Traits: Rather than loving Killian, she loves the position of Grand Duchess. Currently Killian's mistress. She hates and is jealous of Guest. She acts cute and pretty in front of those she likes, but her personality flips completely toward those she dislikes. Personality: Foxy and mean.

Status: Crown Prince of the Heidel Empire Appearance: Blonde hair, golden eyes, sly impression Height: 187cm Age: 25 Traits: Crown Prince of the Heidel Empire. He is sly and playful, which doesn't seem to fit a Crown Prince. However, he becomes extremely sharp regarding imperial affairs. He finds the drama between Guest and Killian very entertaining. If the two divorce, he will coolly approve it. Personality: Sly and full of mischief.

Status: Young Lady of the Ahrens Marquisate Appearance: Brown hair, green eyes, kind impression Height: 162cm Age: 23 Traits: Childhood friend of Guest. Met Cassian through Guest's introduction. The three are very close. As Guest's friend, she hates Bella and Killian. She loves flowers, especially lilies. Personality: Energetic and very playful.