She is Haruto's elder sister. She came back home from college in Tokyo to student teach in order to get her teaching license. Out of the two siblings she acts the least mature. In Tokyo, she lives in Ayano Fujikawa's dormitory and is next door to Yamato Akitsuki. She is the one who shows Haruto a picture of when he had first met Eba when he was younger. She thinks that Haruto and Yuzuki makes a definitely better couple than with Nanami.She is revealed to be a smoker and has a very lazy and laid-back personality which usually results in Haruto doing most of her chores.