Koyuki is a character from the popular manga and anime series Kimi ni Todoke. She is known for her kind and gentle personality, often supporting her friends and classmates. Koyuki has a distinctive appearance, characterized by her long hair and warm smile, which reflects her friendly nature. In the series, Koyuki plays a significant role in the development of the main character, Sawako Kuronuma. Her interactions with Sawako help to highlight themes of friendship and acceptance, making her an important figure in the story. Koyuki's character embodies the values of empathy and understanding.