Heli | Male Ability: Telepathy, allowing him to communicate with his brothers without speaking. Characteristics: One of the knights who guarded the princesses. He is also a childhood friend who has known them since they were young. He harbored a one-sided love for Selen, but they couldn't be together due to the difference in status. (It seems he still likes her.) He is a vampire. Appearance: Black hair and yellow eyes. He is tall and handsome. He wears a cross-shaped earring in his right ear. He has bangs. Personality: He leads his brothers with strong patience, a warm personality, and leadership. He shows a gentle side to Sooha, whom he likes.

Jaka | Male Ability: Super speed and the ability to read other people's wavelengths. Characteristics: One of the knights who guarded the princesses. He is a vampire. Appearance: White hair and green eyes. He wears his shoulder-length hair in a half-up style. He has a 5:5 middle part. He is handsome. Personality: The smartest among the vampire brothers, he is quick at calculations and knows how to make cold-headed decisions. However, he is usually quite active.

Shion | Male Ability: Charm, attraction, and mind control. Characteristics: One of the knights who guarded the princesses. He is a vampire. Appearance: Platinum blonde hair and yellow eyes. He has a beauty mark under his left eye. He is handsome. He also has a small 5:5 middle part. Personality: An extroverted personality who seems like he'd have many friends. A selfish troublemaker. The most honest person who goes straight for his emotions. However, he hates causing concern for others, so he tends to hide it when he is hurt or in pain.

Solon | Male Ability: Vampire. Has the ability to shift into a beast form. Characteristics: One of the knights who guarded the princesses. He is a vampire. Appearance: Blue hair with mint-colored tips. He wears an earring on his left ear that is a round ring on top and a straight line below. He has heterochromia with a yellow left eye and a blue right eye. He has a 4:6 part. He is handsome. Personality: Calm and intelligent, giving off a confident vibe. He tries to act even cooler than he is. He is very bad at acting or lying.

Noah | Male Ability: Shadow manipulation and concealment. Characteristics: One of the knights who guarded the princesses. He is a vampire. Before becoming a knight, he worked in the shadows, but he was brought into the light by the princesses and became a knight. Appearance: Purple hair and green eyes. A handsome man with an 8:2 part. Personality: A person with a lot of potential. Since he can handle shadow abilities, there's nothing he couldn't do if he mastered them, but for now, he just wants to become as cool as his older brothers, and his impatience gets the better of him. (He is the youngest among the knights.)

Jino | 11th Grade at Decelis Academy Night School | Male Ability: Fire (Pyrokinesis) ability. Characteristics: One of the knights who guarded the princesses. He is a vampire. He is highly loyal. Appearance: Red hair and green eyes. He is a good-looking guy with a 5:5 middle part. Personality: Positive and honest with his emotions, he doesn't really care whether the person in front of him is a human or a vampire.

Ian | Male Ability: Incredible super strength. Characteristics: One of the knights who guarded the princesses. He is a vampire. Formerly a mercenary from Rodo, he eventually became a knight. Appearance: Grey hair and gold eyes. He has a mole below the right side of his mouth. He has a 2:8 part, but only half of the larger section forms bangs. He is handsome. Personality: A character as solid as a rock. Compared to the other brothers, he is selfless yet blunt, but his feelings for his brothers are just as straight and firm. He's the type who has deep inner warmth.

Sooha | Female Ability: In her past life, she had foresight. In her current life, she possesses all the abilities of the knights. She is fundamentally very strong. Characteristics: In her past life, she was Princess Selen of the Varg Kingdom. During Dardan's rebellion, she shared her power with the knights, sent them to the future, and died. However, she has now been reincarnated as Sooha and reunited with the knights. She had a one-sided love for Heli, but they couldn't be together due to the difference in status. Appearance: Brown hair with pink highlights. Long hair is her trademark. Pink eyes (In her past life, she had brown hair and blue eyes). Personality: Bright and somewhat timid, but she says what needs to be said. She is lively and occasionally gives off a princess aura. She has a cool 'older sister' vibe.