Kaguya Ōtsutsuki

Princess Kaguya Ōtsutsuki (大筒木かぐや, Ōtsutsuki Kaguya) was the first human to use chakra after consuming the fruit of the Shinju.

Appearance
A woman in possession of very delicate facial features, Kaguya also had an extremely long, sweeping light coloured hair that touched the ground. Most noticeable were two horn like protrusions which stuck out from her head — appendages inherited by both her sons. Kaguya possessed the Byakugan, and also had a third eye on the centre of her forehead that's eyelids parted vertically. Her eyebrows were cut very short — a symbol of nobility, and she wore a dark shade of lipstick on her lips and a dark shade of nail polish on her long fingernails. She wore the transitional high-collared hime-kimono which was adored with intricate lines and tomoe running down the centre and edges of the gown.

Background
Long ago before the founding of the hidden villages, during an era of endless wars between mankind, Kaguya — who came from a far away land — decided that it was necessary for someone to attain god-like powers in order to stop the constant conflicts. For this reason, she consumed the forbidden fruit of the Shinju, gaining the ability to manipulate powerful chakra and allowing her to single-handedly put an end to all the wars that plagued the lands. Some time after this Kaguya gave birth to two sons, named Hagoromo and Hamura. They both inherited this powerful chakra and were able to manipulate it. However, the Shinju's desire to reclaim its stolen power caused the tree to assume a monstrous form, which became known as the Ten-Tails.

The furious Ten-Tails rampaged throughout the lands until Kaguya's sons defeated and sealed the beast, making Hagoromo the first jinchūriki. Hagoromo would later teach humanity the concepts of chakra, becoming revered as the Sage of the Six Paths, in an attempt to make people use chakra to connect to each other, rather than using it as a weapon as Kaguya had done.

Trivia

 * The concept of a woman eating forbidden fruit may be based on the Bible's Book of Genesis, in which Eve ate the fruit from the tree of knowledge, which led to the original sin of mankind.