Age
15
Origin
Land of Fire
Amaru appears in Naruto Shippūden the Movie: Bonds. She is an apprentice doctor, originated from a village in the Land of Fire. Amaru is an orphan who came from a village in the Land of Fire, her parents died of unknown causes. When she was small, she suffered from a strange illness. No one tried to help her, fearing that they would be infected. Because of this, she became alone and shunned from social interaction with the people of her own village all her life like Naruto and Gaara. Later, she was cured by a kind doctor named Shinnō, whom Amaru grew to idolise, as he was the first and at the time only person to show her kindness. After which, Amaru insisted for Shinnō to make her his student, to which he agreed.

Naruto
Moments prior to Naruto Uzumaki's birth, a huge demon known as the Kyuubi, the Nine-Tailed Fox, attacked Konohagakure, the Hidden Leaf Village, and wreaked havoc. In order to put an end to the Kyuubi's rampage, the leader of the village, the Fourth Hokage, sacrificed his life and sealed the monstrous beast inside the newborn Naruto.