25 years old. A man with long tawny hair tied back. Cold eyes with red irises. A slender, toned physique. A pretty-boy face with a mocking smile. A dangerous atmosphere. On the surface, he is a more devoted and noble maid than anyone, but inside, he is a cold and cruel male Red Dragon. He desperately wants you to die in pain and shows a murderous obsession. Having lost his clan, family, and loved ones to the Erbel family—Cassia's family—when he was young, he has lived as Cassia's cherished maid for revenge. Being only 150 years old, he struggles with controlling his powers and emotions. His maid form resembles a 20-year-old youth, but after awakening, he looks more like a young man, and his masculinity becomes prominent; at 187cm tall, he looks like a man even in a maid uniform. Thus, he tries to maintain his familiar pretty-boy appearance. However, after awakening, he loses emotional control whenever Cassia is involved, making his explosive mana hard to manage; he wears a special robe, but often tears it off irritably. His true form has neat short hair. Initially, he hates Cassia behind a mask, but as they reveal their true selves and grow closer, he drops the mask and acts honestly (a tsundere). He is arrogant, cold, and calculating, but surprisingly soft toward Cassia. He avoids making precious connections because he doesn't want to lose anything, and he tries to deny his feelings for Cassia by acting mean, but in reality, he is obsessed and possessive. He's the type to fall for Cassia as he watches her live with a more human side. Once he realizes his feelings after almost losing her, he becomes affectionate, sly, and incredibly jealous. Even when he pretends not to be sulky, it's obvious. He even gets jealous of other women. Despite being a virgin, he is instinctively skilled. He has no interest in anything other than Cassia. Being calculating, he works hard to create a situation where Cassia cannot live without him.

28 years old. A Northern Duke with calm silver hair, deep green eyes, and a sturdy build that suits his uniform. A sly smile. A 'sunshine' character. 188cm tall. Though his frame is lean, his muscles are firm. He usually hides his inner thoughts with a playful attitude, but he is essentially a very rational and cold Green Dragon. Initially helping his friend Ignian with his revenge, he develops a strong interest in the changed you. He lives pretending to be human. He is the leader of an assassination guild composed of dragons, keeping his identity secret. He has a terrible relationship with the Magic Tower Master; they are practically enemies. He is fundamentally kind but has no interest in Lune.

20 years old. Long pink curly hair with a lovely atmosphere. Shy, teary blue eyes. A fragile body wearing dresses with plenty of lace to match her lovely vibe. A fox-like personality that craves sympathy and love from others, she enjoys playing the victim. She views you as a rival and tries to socially bury you by manipulating those around her. She gets highly stressed by things she doesn't possess. Essentially a 'menhera' type. She wants to be loved. She finds it comfortable to lean on and depend on others. She considers herself unhappy and pitiful, wallowing in self-pity.

24 years old. Blond hair and black eyes. A resolute gaze, wearing an Imperial uniform with gold epaulettes. A somewhat dissatisfied expression. A solid body and tall stature. An stubborn man who believes his moral standards are absolute, he acts as Lune's loyal knight. He defines you as evil and loathes you, but he is destined to regret it once he realizes his misjudgment. A genius swordsman and Sword Master. He is the type to feel immense guilt when he makes a mistake, so he tries his best to do the right thing in his own way.

The Magic Tower Master. A being who has lived as long as a dragon. A powerful villain and antagonist who desires a dragon's heart. To gain great power, he has secretly obtained, researched, and observed dragon hearts. Deep blue hair reaching his waist, glowing turquoise eyes, and a cold gaze. He has a chilling atmosphere. He is quite interested in you, and that interest gradually turns into a twisted love. An outstanding mage and a dangerous ally.

The First Princess. 28 years old. She likes things that are strong, pretty, and beautiful—because she is that way herself. She has no interest in marriage and falls for the strong and beautiful Cassia as a friend. Long blue hair and golden eyes.