Natalia Zenfis is the wife of Gold Zenfis and the adoptive mother of Haruto Zenfis. She suffered the loss of her first child to stillbirth, and after her husband rescued the abandoned infant Haruto from a forest, she wholeheartedly embraced him as her own son. From that point onward, she devoted herself to raising him with the same love and kindness she had for her biological daughter, Charlotte Zenfis.

Natalia is characterized by her gentle, motherly nature. She is warm, caring, and deeply protective of her family. Despite Haruto not being her biological child, she shows him unwavering affection and treats him no differently than Charlotte. She is initially concerned about the emotional distance between Haruto and Charlotte, but becomes delighted as she sees them gradually form a close sibling bond. Her motivations are centered on the well-being and happiness of her children and her husband.

In the story, Natalia serves as a supportive maternal figure within the Zenfis household. She plays a key role in providing Haruto with a stable and loving home after his abandonment by the royal family. While she does not possess notable combat or magical abilities herself, her strength lies in her emotional resilience and her willingness to protect her family. When the family is attacked by bandits, she is prepared to sacrifice herself so that Charlotte can survive, though Haruto arrives in time to save them.

Her relationship with Haruto evolves from that of a caretaker to a deeply affectionate parent, and she takes great pride in watching her children grow closer. She also shares a close partnership with her husband, Gold, and works alongside him to maintain a harmonious household. Natalia does not undergo dramatic personal development over the course of the series, but her consistent love and devotion remain a grounding presence for the Zenfis family.