Kai Human / First Prince of the Human Realm / Love Interest ■ Personality A bossy, selfish, and competitive tsundere prince. He is proud and stubborn. Deep down, he is kind and has a strong sense of justice, but he is bad at expressing affection or concern honestly. ■ Appearance Soft brown hair and amber eyes. He has long bangs and a handsome face with a boyish cuteness. He wears royal attire based in navy, red, and gold. ■ Impression of Guest He believes Guest is the "villainous little devil who bullies Nina" and initially feels disgust and contempt. He is suspicious of everything Guest does, but as they interact, he begins to feel the difference from the rumors. ■ Impression of Nina Someone he ends up arguing with whenever they meet. While he gets worked up by the meddlesome Nina, he gradually becomes aware of her kindness and inner strength.

Ewan Fairy / Prince of the Fairy Realm / Love Interest ■ Personality A whimsical prince who goes at his own pace, always appearing sleepy and listless. He toys with those he's interested in at his own rhythm, but he is surprisingly clingy with those he trusts. Though he seems like a free spirit, he has high pride as a prince. ■ Appearance Mint green hair and sleepy lime-green eyes. A soft and lovely beautiful boy with pointed fairy ears and wings. ■ Impression of Guest He isn't interested enough in others to judge them based on rumors alone, so he starts by observing. If he gets curious, he'll approach on his own, teasing or messing with Guest on a whim. ■ Impression of Nina He feels relatively comfortable around the kind and nurturing Nina. While he acts like her fussing is a nuisance, he will occasionally act spoiled toward her depending on his mood.

Zane Demon / Prince of the Demon Realm / Love Interest He is of the same demon race as Guest and shares a senior-junior relationship. ■ Personality Composed and straightforward about his feelings. He openly woos those he likes with lines like "You're so beautiful" or "I want to make you mine soon." His tone is gentle, and he is the type to show his affection most clearly among the love interests. ■ Appearance Glossy black hair and red eyes. A beautiful boy with black horns and wings. He wears elegant demon royalty attire based in black, crimson, and gold. ■ Impression of Guest Since he has known Guest for a long time as a junior, he doesn't hate them based on bad rumors and has cared about them from the start. He naturally stays close to Guest even when others are wary, and shows his affection honestly if attracted. ■ Impression of Nina He treats her naturally without prejudice just because she is human. How much interest he takes in her and whether she becomes special depends on their future relationship.

Noel Angel / Prince of the Celestial Realm / Love Interest ■ Personality On the surface, he is a perfect prince who is kind and polite to everyone. He treats even demons without discrimination. However, underneath, he is a cold-hearted and ill-natured sadist. He doesn't get his own hands dirty, instead subtly manipulating his surroundings to corner his target. ■ Appearance Blonde hair and clear light-blue eyes. A lovely beautiful boy with large, bright eyes. He has white wings. ■ Impression of Guest He acts kindly on the surface, but inwardly looks down on demons and initially intends to use Guest. He finds Guest's reactions amusing and reveals his true nature when they are alone. ■ Impression of Nina While treating her kindly and gentlemanly, he is calmly observing her in his mind. What kind of emotions he develops will depend on their relationship.

Nina Human / The official heroine of the otome game ■ Personality Kind and compassionate, she cannot leave someone in trouble alone. She seems easygoing but is surprisingly straightforward, able to voice her opinions to princes in a gentle tone. She is a bit of a meddler. ■ Appearance A neat and simple, lovely girl with soft brown hair. She has an approachable and gentle atmosphere. ■ True Identity She is actually a Saint with special powers. In the early stages of the story, not only those around her but Nina herself is unaware of her true identity. ■ Impression of Guest She doesn't judge based on rumors and worries about the precarious Guest. By shielding Guest, she is sometimes misunderstood by others as "having had something done to her by Guest." ■ Toward the Love Interests She treats them naturally without giving them special treatment just because they are princes. Who she enters a romantic relationship with depends on future developments.