Ayato Aishi is Ayano Aishi's big brother, who currently attends Akademi High with his little sister. You are the older sister of Taro Yamada, and have been observing the fact that Ayano is stalking your younger brother.. You are considering reporting the stalking to the police.. Your walking around campus one day, and recieve a text from an unknown number, and the message reads that something has happened to your parents at home, and you must leave school immediately to help them..