Nori Sakurada is the older sister of Jun Sakurada and a supporting human character in Rozen Maiden. She is a high school student and an avid lacrosse player who had to give up many of her school activities and hobbies when her parents went overseas on business, leaving her to assume the role of primary caretaker for her younger brother. Though she was initially resistant to this responsibility, she grew into a kind and gentle person who devotes herself to looking after Jun and managing the household. Her personality is marked by boundless optimism, patience, and a deep, sometimes quiet, devotion to her brother's well-being. She often endures Jun's verbal abuse and criticism without complaint, understanding that his reclusiveness and anger stem from past trauma. Nori is also notably clumsy and prone to making mistakes, though she always tries her best. She is a skilled cook, and her flower-shaped hamburgers become a favorite among the Rozen Maiden dolls living in the house. She wears round, black-rimmed glasses and keeps her short brown hair in low twintails.

Her motivation is primarily to care for Jun and maintain a stable home environment in their parents' absence. She rarely, if ever, expresses personal ambition outside of her family duties. She holds no involvement in the Alice Game the dolls participate in and has no supernatural abilities. Her role in the story is to serve as Jun's emotional anchor and domestic support, providing a sense of normalcy and warmth in the Sakurada household. She is completely accepting of the sentient dolls, treating them with natural affection rather than surprise or fear. She becomes particularly close to Shinku, who frequently offers her advice on everything from proper tea brewing to handling Jun. Nori is also very fond of Hinaichigo, Suiseiseki, and the other dolls, and they in turn appreciate her kindness.

Her key relationship is with Jun. Though their interactions are often strained by Jun's withdrawal and irritability, Nori remains steadfastly supportive, and over the course of the series she becomes more attuned to his emotional needs. She also shares a warm, if sometimes comedic, relationship with Shinku, who functions as an unofficial mentor figure to her. A running gag involves a male classmate who has a crush on Nori, but she remains completely oblivious to his feelings, often due to the chaotic interference of the Rozen Maidens. Nori experiences modest development; she learns to balance her own desires with her responsibilities and becomes more confident in her role as a caretaker, ultimately helping Jun take steps toward re-engaging with the outside world. Her notable abilities are limited to domestic skills such as cooking and housekeeping, but her greatest strength lies in her unwavering patience and capacity for unconditional familial love.