Suzuka Kurihara attends the elementary school affiliated with Homurahara Academy as a classmate and friend of Illyasviel von Einzbern. Within Illya's circle of friends—including Nanaki Moriyama, Tatsuko Gakumazawa, and Mimi Katsura—Suzuka stands as the most rational and level-headed individual. She frequently shows impatience or frustration when facing tedious or time-consuming tasks, whether navigating her complex dynamic with her older sister or handling chores like cooking.

Her background includes regularly assisting her older sister in creating doujinshi for comic events, honing her talent in arts and crafts. This involvement in doujinshi culture fuels her interests as a fujoshi; she enjoys boys' love (BL) content, actively crafting yaoi-themed fantasies and references involving characters like Shinji Matou and Shirou Emiya. She collaborates with Mimi Katsura to produce doujinshi based on observed interactions between Shirou and Issei Ryuudou, weaving in homoerotic subtext for creative material.

Suzuka's appearance features practical elements: glasses, twin braids, a standard school uniform, knee-high socks, and hair ornaments. She lacks any supernatural abilities or combat traits, possessing only the ordinary capabilities of an elementary school student. Her surname "Kurihara" translates to "chestnut field," while her given name "Suzuka" combines the characters for "sparrow" (雀) and "flower" (花).

She appears consistently across all series installments—seasons, OVAs, and movies—maintaining a supportive role without direct involvement in primary magical conflicts. Her interactions with Illya and Kuro occur during school life scenarios, such as Kuro's integration into their class after posing as Illya's cousin. Her activities center on everyday school events, social dynamics, and creative pursuits, separate from magical girl plotlines.