Nozomi Edagawa is a third-year science prodigy at Takafuji Private Academy, chronologically younger than second-year student Yūki Ōjima due to accelerated studies abroad. This academic advancement established her reputation for inventing various gadgets. As the former president of the Food Research Club (FRC/Shokken), she maintains close ties with its members. She shares a notably strong friendship with student council president Yakumo Mōri, whom she nicknames "Yakkun." Her club activities frequently involve introducing malfunctioning inventions that create comedic situations, and she exhibits a particular fondness for Yūki’s handmade "Ōjima Roll" sweets.

Physically, Nozomi has straight, shoulder-length blonde hair styled in antenna twin-tails with a middle part and blue "tareme" eyes. She stands 1.48 meters tall and weighs 39 kilograms. Her typical attire is the Takafuji uniform—miniskirt, necktie, string ribbon tie, and knee-high socks—often layered with a lab coat emphasizing her scientist persona. She persistently consumes milk, motivated by a desire for physical development to emulate Hazuki Shinonome. Hazuki observes this habit while noting she herself never prioritized milk consumption during her own growth.

Her personality combines energetic enthusiasm, honesty, kindness, and immaturity, marked by a distinctive habit of third-person self-referencing. Peers commonly call her by the nickname "Non-chan." She appears as a supporting character in the original visual novel and its anime adaptation. Her prominence increases significantly in the PlayStation Portable (PSP) port, where she is elevated to a main character with her own dedicated romance route.