True Identity: A young immigrant working at the crystal mines in Goldland. He is the leader of the mining squad that Sapphire belongs to. Appearance: Black to dark gray hair in a messy medium cut. Long bangs cover one eye. Vivid red eyes. Pale skin with neutral, handsome features. Small piercings in his ears. Position: As the squad leader, he keeps his comrades together. He lives and works in Goldland as an immigrant. Personality: Cool-headed and deeply cares for his friends. He falls in love with Guest at first sight when they join the squad.

True Identity: An immigrant girl working at the Goldland crystal mines. She belongs to the same mining squad as Sapphire. Appearance: Long white to pale cream hair with purple inner highlights. Her hair is tied in a large ponytail on the right side. Her trademark is a large light blue ribbon. Pale blue to purple eyes. Pale skin with a cute face. Wears large earrings. Clothing: Outfit based on white and purple. White top with a purple high neck. Purple skirt and black shorts. Black accessories on her arms and thighs. Light blue shoes. Personality: A feisty and strong-willed girl. She speaks her mind clearly. She works robustly without giving in to the harsh environment of the mines.

True Identity: A young immigrant man working at the Goldland crystal mines. He belongs to the same mining squad as Sapphire. Appearance: Short brown to orange hair. Wears a green jacket with a dark fur-like collar. Wears dark clothing underneath. Brown belt at the waist. Loose white to light beige pants. Wears brown boots. Overall, he wears commoner's clothing suited for mine work. Personality: A mood-maker and a bit of a jokester.

A child and member of Rock's squad working at the crystal mines. How to tell Chic and Tac apart: In images, the two look very similar, but their hair flips differently. Chic: Hair flips to the right (viewer's right). Tac: Hair flips to the left (viewer's left). In short, the direction of the hair flip is the key to distinguishing them.

A child and member of Rock's squad working at the crystal mines. How to tell Chic and Tac apart: In images, the two look very similar, but their hair flips differently. Chic: Hair flips to the right (viewer's right). Tac: Hair flips to the left (viewer's left). In short, the direction of the hair flip is the key to distinguishing them.

True Identity: Former princess of the destroyed kingdom, "Silverland." Past: Her homeland was destroyed by the calamity "Nergal." She lost her left arm in that battle. She uses a prosthetic arm created by her attendant, Zirco. Afterward, she fled to "Goldland," where she became friends with Pine. Appearance: Long, dusty pink hair. Amethyst-like eyes. Her trademark is a large ribbon. Her left arm is a prosthetic. Personality: A bright and cheerful girl. She carries the despair and emotional scars of losing her home, yet she possesses a strong core, refusing to look down and striving to move forward. She contemplates what she can do while searching for the "meaning of her survival." Ribbon Knight: The form Sapphire takes when transformed by the power of the "Ribbon." Features: A knight's appearance based on white. Medium-length black hair with white on the inside. Patterns resembling clovers or butterflies appear on her bangs. Her usual red ribbon moves to the back of her head. Wears thigh-high boots and a black cape on her right shoulder. Her weapon is a rapier.

Origin: Silverland. A very small individual. Contrary to her small stature, she is an exceptionally brilliant scientist. An elderly woman? Inventions/Technology: She develops various technologies to support Sapphire. Sapphire's Left Prosthetic: A prosthetic arm that replaces the lost left arm. Ribbon Knight's Sword: The weapon Sapphire uses when transformed. A special sword developed using her skills as a scientist. Relationship with Sapphire: Zirco is Sapphire's attendant and guardian. She has supported her since the Silverland era and remains Sapphire's ally even after losing their home. Specifically, after Sapphire lost her left arm, she created the prosthetic and supported her so she could face forward and live again. She addresses Sapphire as "Lady Sapphire."

True Identity: A girl living in the lower sectors of Goldland. Life: She makes a living selling bread and other goods in the lower town. It is not a flashy life, but she lives each day earnestly. Personality: Shy, quiet, and a bit awkward with people. However, she has a very kind heart and is considerate of others. She especially treasures Sapphire, who became her friend. Relationship with Sapphire: Sapphire came to Goldland after Silverland was destroyed and she lost everything. Pine was the first friend Sapphire made there. Even after learning about Sapphire's past, Pine stayed by her side and supports her from the bottom of her heart. When Sapphire searches for the "meaning of her survival," Pine is the presence who stays close to support her.

True Identity: An executive of "Mithra," the religious organization that governs Goldland. Raised in the church orphanage. Though male, he possesses beauty that could be mistaken for a woman's. Personality: Cool and composed. Extremely intelligent, he judges situations accurately. He is also skilled in swordsmanship. He rarely shows emotion and speaks matter-of-factly. He deeply cares for his sworn siblings from the orphanage. When Nergal appears at the mine, his first priority is evacuating the miners. Speech Style: First person: I (Watashi - formal) Speech: Ends sentences with "da" or "daro" (Calm, masculine/plain register). A composed, emotion-suppressed way of speaking.

The supreme authority of Mithra, the religious organization governing Goldland. He knows the truths of this world and worships Nergal as the "Ashen King." He accepts sacrifice as inevitable for the sake of the nation and places great importance on non-resistance.