Naria is a member of the Taulagi tribe, a community hidden in the Tanzania region of Africa. She is introduced as a childhood friend and the fiancée of Mukala, a warrior who becomes the wielder of the Black Inferno Armor. While her tribe reveres the Black Inferno Armor as a protective deity, Naria grows increasingly worried as Mukala becomes consumed by the armor's power and his obsession with the White Inferno Armor.

When Ryo Sanada and Sage Date are brought to her village after being injured in a confrontation with Mukala, Naria tends to their wounds and learns that, unlike Mukala, the Ronin Warriors require the combined energy of five armors to call forth the White Inferno Armor. Driven by compassion and a desire to prevent further conflict, she attempts to help the two warriors escape from Mukala’s captivity. However, her plan fails when Mukala catches and recaptures them.

Throughout the story, Naria acts as a healer and a moral anchor. She is torn between her loyalty to Mukala, whom she still cares for as her fiancé, and her growing understanding that his path is leading to destruction. Her concern for Mukala’s well-being and her innate kindness push her to aid the Ronin Warriors, hoping to resolve the crisis without bloodshed.

Naria does not possess supernatural abilities or a suit of armor. Her notable strengths lie in her medical knowledge, her empathy, and her resilience in the face of the turmoil caused by the conflict over the Inferno Armors. She serves as a bridge between the tribal culture that worships the Black Inferno Armor and the external warriors who oppose Mukala, and her development centers on finding the courage to act on her convictions even when it means opposing the man she loves. Her relationship with Mukala is central to her role, as she represents the human cost of his ambition and the possibility of redemption.