Nell serves as a central figure within the International Military Organization, piloting the Norse mythology-inspired Rim Hugen mecha known as Oro. Reconnecting with protagonist Yu Kananase after years apart, their shared childhood bonds intertwine with her professional ties to Yu’s sister, Kaori Kananase—a high-ranking I.M.O. official. Her narrative arc navigates battlefield engagements, strategic clashes within the organization, and covert power dynamics orchestrated by a shadowy council resembling SEELE.

The Oro, linked mechanically to the Dragon Fang unit and the broader Ordian system, embodies the series’ fusion of myth and technology. Nell’s operational role expands during the story’s latter half through encounters with the Remake system, a consciousness-transfer technology, though the extent of her direct involvement remains undefined. Escalating warfare and ideological rivalries frame her evolution, particularly through conflicts with figures like Wolf, whose metamorphosis into the vengeful antagonist Eric directly impacts her path. While her childhood ties to Yu and Kaori anchor her motivations, details of her life beyond these relationships and the central conflict remain unexplored.