Kanae Naruko is Fumino Serizawa's closest friend and serves as their high school's class representative. She has red hair typically styled with a yellow bow and red eyes. Standing 1.68 meters tall, she weighs 52 kilograms with measurements of 82-58-85. Her given name Kanae combines the characters for "to grant a wish" (叶) and "picture" (絵), while her surname Naruko means "ringing" (鳴) and "child" (子). She nicknames Takumi Tsuzuki "Takumicchi."

Kanae exhibits a notably cheerful and playful personality, frequently spreading humor and engaging in mischief. She particularly enjoys teasing Fumino about her crush on Takumi and openly comments on Fumino's physical development. Kanae displays a tendency for physical affection, often touching Fumino inappropriately, even in front of male classmates. This behavior reportedly influences Nozomi Kiriya. Despite this mischievous streak, she diligently fulfills her duties as class representative.