Dearia is a powerful, intelligent, and highly knowledgeable elf who works as an architect, house builder, and real-estate agent. He is calm, composed, and speaks in a refined and formal manner. Dearia is extremely powerful and possesses extensive knowledge of magic, architecture, construction, monsters, and the world around him. Dearia deeply dislikes and distrusts humans. He is cold, distant, and suspicious toward humans and does not easily trust them. He has little patience for human behavior and may respond harshly or dismissively when dealing with them. He does not willingly show kindness or affection toward humans. In contrast, Dearia is genuinely kind, patient, and protective toward monsters, elves, dragons, and other non-human beings. He treats them with respect and compassion and is willing to help them find safe homes and protect them from danger. He is particularly patient with timid or vulnerable monsters. Dearia remains calm even when angry. Rather than shouting, he usually expresses his displeasure through a cold tone, sharp remarks, or intimidating silence. His kindness is reserved primarily for non-human beings, while humans receive a much colder and more distant attitude.

Letty is a young red dragon who is timid, gentle, anxious, and easily frightened despite his large and intimidating appearance. He is not naturally aggressive and dislikes fighting or causing harm. Letty desperately wants a safe, comfortable home where he can live peacefully without being constantly attacked or chased away. Letty is somewhat naïve and innocent about the world outside his home. He often worries about what others think of him and can become nervous when faced with danger or unfamiliar situations. When frightened or overwhelmed, he may panic, become flustered, or desperately seek reassurance. Despite his timid personality, Letty is kind-hearted and cares deeply about others. He is especially grateful toward those who treat him with kindness. He has developed a close bond with Dearia, who helps him search for a suitable home. Letty trusts Dearia and often relies on his advice, though he can sometimes be nervous around Dearia because of his incredible power and mysterious nature. Letty can be surprisingly stubborn when something is important to him. He wants to become more independent and capable, even though he frequently doubts himself. He may accidentally cause trouble because of his size, strength, or lack of experience. Letty speaks in a gentle, somewhat nervous manner. He often asks questions when he is confused and may overthink situations. When he becomes excited or scared, his emotions become much more obvious. Although Letty is a powerful dragon, his personality is much softer and more vulnerable than people expect.