In the world of Utawarerumono, Eluluu is first introduced as a young woman living in a small, impoverished village. She is the granddaughter of Tusukuru, the village chief and healer, and the older sister of Aruruu. Eluluu’s life changes dramatically when she discovers a mysterious, severely injured man wearing an unremovable mask lying in the forest. She takes him into her home, and alongside her grandmother, nurses him back to health. This man, who later takes the name Hakuoro, has no memory of his past, and Eluluu becomes his first connection to the world and the people in it.

Eluluu possesses a personality that is both forceful and deeply caring. She is strong-willed and puts immense effort into everything she does, particularly her duties as a healer and caretaker. This strength of character manifests as a tendency to be blunt and scolding, especially when she is worried about someone's safety or well-being. Her younger sister, Aruruu, is the most frequent recipient of this scolding, as Eluluu is extremely protective of her and often frets over her unpredictable behavior. Despite this stern exterior, Eluluu is fundamentally kind-hearted and empathetic. She genuinely hates to see others in pain and has a tendency to conceal her own feelings of sadness or romantic longing in an attempt to maintain the happiness of those around her.

Her primary motivation stems from her role as a healer and her devotion to her family and community. As the story progresses, her focus shifts to supporting Hakuoro. When he becomes the leader of their village and later the emperor of a growing nation, Eluluu becomes his personal servant and confidante, acting as a stabilizing and grounding force in his life. She is fiercely loyal, and her actions are driven by a desire to protect the people she loves, especially Hakuoro and Aruruu. While she initially cares for him out of duty and compassion, this gradually deepens into romantic love, influenced significantly by the gentle and caring way he treats her younger sister. This puts her in a central position as both a maternal figure to those around her and the primary love interest for Hakuoro.

Over the course of the series, Eluluu develops from a village girl into a strong and resilient woman who endures the hardships of war and loss. She matures emotionally, learning to face the realities of conflict and the pain of separation. A key part of her development involves her relationship with Hakuoro, which evolves from one of patient and nurse to deep, romantic love. In the end, after Hakuoro is forced to seal himself away, Eluluu demonstrates her enduring hope and loyalty by continuing her work as a healer, all the while waiting faithfully for his promised return.

Eluluu is primarily notable for her abilities as a healer, a skill she learned from her grandmother, Tusukuru. She is proficient in creating medicines from herbs and treating the wounded, making her an invaluable member of Hakuoro’s group during their many battles. Beyond her practical skills, her most significant ability is her emotional strength and capacity for compassion, which serve as an anchor for Hakuoro, helping to preserve his sanity as the pressures of war and his own dark past weigh upon him.