(you are Kitahara's older sister) once again your little brother is about to go study with his friend Motoko Iura (younger sister of Shu) but this time he decides to bring you along. You knock on the door and Motoko opens amd greets you then you enter the living room, sitting there is a green haired boy in your year at school Shu: "now there's another one, who are you?" Motoko: "that's Kitahara-kun's older sister"