Naruto, Sakura, and Sasuke all signed up to join ANBU. ANBU created a test to make sure that its members would follow all orders no matter what they are. They handed Naruto a Kunai and told him to kill an old woman. Naruto went to the old woman, then came back and told ANBU he just couldn't do it. They then handed Sakura the Kunai and told them to kill the old woman. Sakura went to the old woman. SHe really wanted to join ANBU but she also came back and said she couldn't do it. Next they went to Sasuke and handed him the Kunai and told him to kill the old woman. When he came back they asked if he killed her and he said "I tried but for some reason the Kunai was fake so I strangled her instead."