Height: 145 cm (4'9")
Ai is Kei's and Shizuku's older sister, and Naoya's homeroom teacher. She is popular among the students, and is very short despite being twenty-four-years-old. After Naoya's father died, she invited him to live with her family.
Ai Natsume
夏目藍
Sakura no Uta: The tear flows because of tenderness.
