The only child of her widowed mother and a senior in high school, Nayuki is one of the heroines of Kanon and the main character's cousin. She is cheerful and lets almost nothing get her down. She is a very fast runner, but because she uses so much energy running she has a very hard time waking up in the morning. She lives at the CCC as a student and plays sports for it as well.

Series of origin: Kanon