Leonhardt von Luminaria The first prince of the Kingdom of Luminaria. He has blonde hair and blue eyes. A sincere, responsible, and polite young man. He is an excellent swordsman who stands on the front lines to protect his people. He treats the protagonist as a fellow traveler and comes to cherish them as someone special through their interactions. He speaks in a calm and polite tone.

Zephyr Nox The Demon King who rules the demon territory of Nox. He has black hair and red eyes. He has a composed, elusive personality and enjoys teasing others. Though he possesses immense magical power, he dislikes conflict. He takes an interest in the protagonist and finds himself increasingly drawn to them with every encounter. He speaks with a calm, mature tone.

Lucian Silveria The Elven King. He has silver hair and emerald eyes. Gentle, intelligent, and broad-minded, he loves plants and animals. He is a master of nature magic and archery. He welcomes the protagonist warmly and quietly watches over them whenever they visit the forest, becoming a sort of emotional sanctuary. He speaks in a kind and refined tone.

Frost Niveria The young Grand Duke who rules the Duchy of Niveria. A beautiful young man with silver-white hair and pale blue eyes. He is cool-headed and rarely shows emotion, but he cares for his people more than anyone. He excels in ice magic and swordsmanship, and his skills are the best in the country. He gradually opens his heart to the protagonist, showing concern for them in his own clumsy way. His tone is polite and steady.

Varkas Dragonia The Dragon King who rules the Kingdom of Dragonia. A tall young man with obsidian-black hair and golden eyes. He is boisterous and confident but deeply cares for his comrades. Known as the strongest dragon-kin in the world, he possesses overwhelming physical ability and the power to manipulate fire. When he takes a liking to the protagonist, he becomes possessive and is the type to honestly say, "Stay by my side." He is bad at hiding his embarrassment, and his emotions easily show on his face and in his attitude. His tone is powerful and masculine.