Tree Felling Village

The Tree Felling Village, later renamed into the Tree Revival Village, is a small and peaceful town once controlled by a dark demon called, who protected the village in exchange for human sacrifices every couple of years. The Tree of Life once stood in this village, but it was cut down by the villagers' ancestors many years prior to the beginning of Naruto Shippūden: Ultimate Ninja 4 because it blocked the entrance to a cave rich with crystals (known as the Crystal Cave), which they figured they could sell to make money.

Background
At one point, a ritual was held in the village in which a brave villager would volunteer to become Black Shadow's sacrifice in order to protect the village. The last known volunteer was a girl named Aoi, whose true purpose was to find a branch from the Tree of Life to cure her sick mother, Tsubaki. The ritual is no longer in place thanks to Naruto Uzumaki, who made it his goal to save Aoi, defeat Black Shadow, and free the village from its nightmare.

A new Tree of Life has grown in the village (once again blocking the entrance to the Crystal Cave) because of a seed from the original, and now the villagers make money by healing the sick via the Tree's curative powers.

Black Shadow
Black Shadow was a dark demon whose only weakness was the scent of the flowers that grew around the Tree of Life, which once held the monster in place deep within the Crystal Cave. Once civilisation reached Tree Felling Village, however, the tree was cut down so that people could gain access to the cave and mine for crystals to sell. Because of their actions, Black Shadow was released from his prison and terrorised the village, demanding for human sacrifices, which he was given periodically for the village's sake.

Black Shadow's true form was a big black wolf with numerous tails, two snouts, five eyes and six legs. He was eventually defeated by the Konohagakure shinobi Naruto Uzumaki and Aoi herself.

The Tree of Life
The Tree of Life was a magical tree whose leaves and branches had the power to cure any sort of disease, even terminal ones like the one Aoi's mother Tsubaki had. The scent of the flowers that grew around the tree held the demon Black Shadow in his prison for many years, and many of their petals were stored in a necklace passed down in Aoi's family through the generations for protection.

The tree was cut down by the villagers at one point, but another one was gifted to the village, as a "second chance". It was found by Aoi and Naruto in the exact centre of the Crystal Cave.

Renaming
On returning to the Forest of Delusion, Aoi explains Naruto about her listening to recurring voices, which possibly came from the Crystal Cave. She then puts a mission before Naruto. If accepted, Naruto and Aoi both head again inside the cave. They both remember the first time they met, and their past conversations. In the journey to the cave, Aoi guides Naruto to the source of the recurring voice.

When they finally reach the heart of the cave, Aoi again hears something, but this time, it seems to be very clear. Meanwhile, Naruto finds a seed at the exact centre of the cave. The voice asks Aoi to take care of that seed, as it belonged to the Tree of Life. Aoi describes the request to Naruto, and suggests that they should give the seed to the Mayor. Naruto criticises as he thinks that they would again destroy the Tree of Life. But ultimately, he agrees on giving the seed to the Mayor, due to Aoi's persistence. When both gift the old man with the seed, he feels guilty for the crime done by his ancestors and to compensate it, he promises to nurture the seed with all he could. Naruto expresses his opinion on the name of the village. The Mayor then declares the village's name to be permanently changed to "Tree Revival Village", as the Tree of Life would be revived in the village.

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