Hitomi Onodera is best known as the closest friend of the protagonist, Nana Suzuki, and serves as a key source of support throughout the story. Her background reveals that she is the daughter of a family that owns a restaurant, a place she and Nana traditionally visit each year to take part in an annual party. This recurring detail hints at a long-standing and stable family environment that contrasts with the more chaotic magical events unfolding around her friend.

In terms of personality, Hitomi is characterized by her perceptiveness and her grounded, loyal nature. She is consistently portrayed as someone who understands Nana better than Nana understands herself. This deep insight is not merely a passive trait; Hitomi actively tries to support Nana in her romantic quest to confess her true feelings to Yuuichi, the boy they both care for. Her motivation is clearly rooted in her devotion to her friend’s happiness, pushing Nana forward while providing a steady, reliable presence. Her role in the narrative is that of an anchor, a character who remains constant even as Nana undergoes an extraordinary transformation.

The core of Hitomi’s role emerges directly from the central plot. After Nana splits into seven distinct individuals, each representing a different aspect of her original personality, Hitomi is the one who can easily tell which Nana is which. This ability underscores the depth of her knowledge regarding Nana’s genuine self, as she can recognize nuances that even Nana herself might have lost. Hitomi is also noted to have completely different-looking eyes when she removes her glasses, a physical feature she once used to disguise herself. This detail adds a subtle layer of complexity to her appearance, suggesting she might possess a more resourceful or cunning side than her usual supportive demeanor lets on.

Regarding her development over the course of the series, the information available indicates that Hitomi remains a steadfast ally whose primary function is to provide clarity and emotional backing for Nana. Rather than undergoing a dramatic personal transformation, her growth is perhaps defined by her deepening ability to manage and support the seven unique personalities of her friend. Her key relationships are centered almost entirely on Nana and, by extension, Nana’s friends and love interest. There is no indication that she possesses magical or supernatural abilities; her notable strengths are her sharp observational skills, her emotional intelligence, and her unwavering loyalty, which make her an indispensable figure in helping navigate the unusual circumstances.