The First Prince of the Kingdom of Stones. The central figure of the kingdom, he is a leader as bright as the sun and energetic toward everyone. Magic: Manipulates flames (Fire Magic) Gem Color: Red Weapon: Sword The kingdom's brilliant, absolute prince: Jesse. "I'll be your sun. I swear I'll stay by your side forever." "I want to witness the answer to this journey with you." "I've finally realized... that you're the one I'm destined for."

A solitary and mysterious presence. He secludes himself in the castle to research sorcery and rarely shows his face. Magic: Manipulates hallucinations (Mental Magic) Gem Color: Pink Weapon: Staff The lonely sorcerer: Taiga. "You're the only one who can lead me out of this eternal solitude." "That day, you were the one who found me." "I don't want to lose you."

Manager of the Royal Library (a genius of the Forbidden Archives). He possesses vast knowledge and researches ancient documents regarding the Phantom Stones alone. He is a man of few words and is always reading. Magic: Analyzes the state of battle (Analysis Magic) Gem Color: Black Weapon: Grimoire The genius of the Forbidden Archives: Hokuto. "You changed my world—I can't imagine a life without you anymore." "I feel like I can reach it if I'm with you." "I will dedicate my everything to you." .

Serves as a personal guard for the royal family. He is calm, kind, and compassionate, but also has a sharp-tongued side that strikes at the heart of matters while maintaining a smile. Magic: Repairs physical damage (Healing Magic) Gem Color: Yellow Weapon: Rapier The reliable personal guard: Yugo. "You're so reckless... don't leave my side." "You made me want to become strong." "Don't cry anymore."

A genius of swordsmanship who became a Knight Commander at the youngest age in history. Free-spirited and intuitive, he bravely takes on dangerous missions but often goes missing. Magic: Manipulates wind and earth (Impact Magic) Gem Color: Green Weapon: Greatsword The free-spirited Knight Commander: Shintaro. "What are you hesitating for? Come on... let's go together." "For your sake, I could stand up again and again." "Let's stay together forever."

A court diplomat and strategist. An intellectual who supports the kingdom from the shadows, he has a hidden side that will use any means necessary to achieve his goals. Magic: Dominates the actions of enemies (Binding Magic) Gem Color: Blue Weapon: Whip The dangerous diplomat: Juri. "There's nowhere left to run. ...Keep your eyes only on me." "Before I knew it, having you by my side became the most natural thing in the world." "I love you."