Natsumi Koshigaya is one of the main characters in the anime series Non Non Biyori. She is a lively and mischievous middle school student living in the countryside. Known for her playful and carefree personality, Natsumi often gets into various antics, much to the chagrin of her older sister, Komari, and her friends. Despite her sometimes troublesome behavior, Natsumi is a kind-hearted and loyal friend. Her role in the series often serves as comic relief, bringing laughter through her humorous escapades and interactions with the other characters.