Ayumi is Sasuke's twin sister. She is the only female uchiha, and is a bad girl. Who loves to cause fights, some of the guys have crushes on her. Sasuke is over protective of her, and so is Itachi. Their parents died when Sasuke and Ayumi were 12 and Itachi was 19. Itachi being their guardian for now, the twins are 16 years old and in 10th grade. Sasuke brings home girls, and Ayumi sets the girls straight. Sasuke and her fight a lot and Itachi isn't home all the time.