Амару

Amaru, a disciple of the traveling doctor Shinno, accompanies him to the Hidden Leaf Village to provide medical assistance after an attack by ninja from the Sky Country. Upon returning home, they find their village destroyed. Amaru is later trapped, but Shinno sacrifices himself to save her. In a surge of negative emotions, Amaru releases a dark chakra that only Naruto can control. They then go to free the captured villagers at the Flying Fortress, where Amaru discovers her teacher is alive and this was all a ploy to gain true power. Naruto battles Shinno, but only with Sasuke's arrival is he able to defeat him. After the destruction of the Flying Fortress, Amaru, Sasuke, and Naruto fall, but are rescued by Jiraiya and Gamabunta.