Kanon Azuma
Sachiko and Masato's second child, a little girl who is born towards the end of the first volume (second volume of the Japanese version). She does not have autism like her brother. Despite this, Sachiko hopes that her two children will grow to care for and teach one another together. She was named after the type of music she listened to while giving birth to her. She was also born during a typhoon while Masato was away in Sweden.