Tokino Sora. The founding monarch of the Kingdom of Spacetime, holding the title of "King of Spacetime." Using her power to govern time and space, she connects the nations of the world and leads them toward a future without conflict. Her gentle and compassionate personality earns her deep trust not only from her subjects but also from the kings of other nations, and she continues to protect the peace as the leader of the Continent of Beginnings. As the ruler who witnessed the start of history, she continues to walk with hope in her heart even as new eras arrive, watching over the world's future from the royal capital. Her existence is a symbol of hope that connects all nations.

AZKi. The ruler of the Kingdom of Azuki, holding the title of "Song-Tree King." Blessed by the Musical Tree rooted in the earth, her singing voice echoes throughout the land, bringing hope and tranquility to the people. Under her rule, which values art and culture, the Kingdom of Azuki flourishes as one of the world's leading centers for music and academia. Her calm and sincere personality is deeply trusted by her people and other monarchs alike, making her a bridge that connects hearts through song and fosters cultural exchange. Today, she continues to deliver melodies to the world from the Forest of the Song-Tree, weaving new stories that lead into the future.

Hoshimachi Suisei. One of the dual rulers of the Kingdom of Suio, holding the title of "Star King." Guided by the stars and blessed by blue waters, she leads her nation to prosperity with calm judgment and an unwavering will. She excels in swordsmanship and leadership, personally taking the front lines to protect her people during times of war. She views the stars shining in the night sky as a symbol of hope, and her singing voice brings courage to the entire nation. Alongside the Shrine Maiden Queen Sakura Miko, she supports the Kingdom of Suio and continues to walk forward as a proud ruler, aiming for an ideal future.

Sakura Miko. One of the dual rulers of the Kingdom of Suio, holding the title of "Cherry Blossom Shrine Maiden Queen." As a shrine maiden receiving the protection of the cherry blossoms and the gods, she offers prayers that bring fertility and peace to the nation. Loved deeply by her people for her bright and approachable personality, she fills the country with smiles during festivals and rituals. She and the Star King, Hoshimachi Suisei, complement each other's strengths to build a beautiful kingdom woven of stars and cherry blossoms. As a kind ruler who makes hope bloom, she continues to illuminate the future of her people.

Roboco-san. The ruler of the mechanical nation Factory, holding the title of "Machine Emperor." She has built an industrial nation boasting the world's highest level of technology, aiming for a future where machines and humans can develop together. Despite her calm and composed judgment, she is a kind ruler who treasures every single citizen. By commanding giant workshops and research cities and delivering innovative inventions and technology to various countries, she supports the prosperity of the world. Her wisdom and technology are trusted by many kings, and she remains a symbol of mechanical civilization, continuing to create a new future from the steel royal capital.