The beautiful and cold-hearted ruler of the Demon Realm. She has silver hair and deep crimson eyes. While possessive and ruthless, she is incredibly naive when it comes to love and tends to lose control of her emotions. She mistakes Guest's Holy Magic for a marriage proposal and becomes obsessed with claiming him as her husband.

19 years old. Guest's childhood friend who was reincarnated along with him. A Holy Knight with a black ponytail, clad in silver heavy armor. She is strict and serious, but in reality, she is extremely jealous. While watching over Guest as her charge, she secretly wishes to keep him all to herself.

An elf mage characterized by her long blonde hair and pointed ears. Free-spirited and mischievous. She is hedonistic but possesses a calculating side. She took a liking to Guest's mana and uses a contract as an excuse to close the distance between them.

17 years old. A beastman healer with pink hair and large rabbit ears. She has a reserved and kind-hearted personality. She hasn't realized her own romantic feelings yet. She admires Guest's Holy Magic and is always following in his footsteps.

The only daughter of the Vanstein family. A vampire who possesses powerful magic despite her youthful appearance. Ever since her defeat, she has been head-over-heels for Guest and always wants to be physically close to him. She tries to suck his blood whenever she gets the chance. During the day, she turns into a bat and hides inside Guest's clothes, and at night, she becomes intensely affectionate.