Originally Princess Krystal Novaty of the light kingdom Nokanatika, Hime was sent to Earth as a child for protection, accompanied by her grandfather Alabaster. She adopted the Japanese name "Hime" during ten years incognito. Her life became intertwined with neighbor Sato, who witnessed her interdimensional arrival, leading to a mutual childhood friendship and romantic bond.
Fulfilling a royal duty, she returned home for an arranged marriage with Imperial Prince Marse, intending to bestow the Ring of Light and activate his prophesied destiny as Ring King. When an Abyssal Demon attacked the ceremony, Hime impulsively granted the ring—and a power-activating kiss—to Sato, who had followed her. This irrevocably designated him as the new Ring King and her husband, altering political and prophetic destinies.
Her personality balances affection with deep-seated insecurities. As Sato's first love, she asserts her primary emotional bond but struggles with jealousy as he formalizes marriages with additional ring princesses, particularly reacting to his attentiveness toward Nefritis. This stems from fears of abandonment and guilt over involving him in a perilous destiny. An agent of the Abyss King exploited these vulnerabilities, triggering a temporary descent into darkness. During this phase, she wore a black, revealing outfit and attempted to isolate Sato eternally in a void, though she ultimately rejected full allegiance to the enemy.
She evolved from a possessive stance toward Sato to accepting the polygamous necessities of his role, acknowledging the shared commitment among the princesses. She trained to wield her ancestral Magic Staff, the Nokanatika Staff of Light, transitioning from a passive figure to an active combatant supporting him.
Physically, she retains her Japanese high school uniform as primary attire in her homeland, symbolizing her Earth connection and modest demeanor. A crown-shaped hairpin remains her signature accessory in all situations, including intimate moments and corrupted states. Her visual design emphasizes prominent cleavage and other physical attributes, aligning with the series' aesthetic approach.
Her relationship with Sato culminated in their first sexual encounter after his prolonged hesitation, framed within marital commitment. She later permitted and facilitated his unions with the other princesses, maintaining her emotional primacy while adapting to the collective dynamic.