Impure World Reincarnation Allied Forces

The was a group of reincarnated shinobi from various countries, whose mission is to unsealing strong shinobi, previously neutralised by the Allied Shinobi Forces.

Background
When Orochimaru tried to perfect the Summoning: Impure World Reincarnation, he looked for DNA from strong shinobi who had already died in order to resurrect them. He introduced Kabuto Yakushi to this, and he continued to collect material, growing the collection not only with good samples, but also with weak shinobi, who more often than usual came across during experiments. Kabuto decided to keep them all for later use.

Force Composition
The forces consisted of weak shinobi, those who died on lower-level missions. Among them there were distinctive specimens that were slightly able to withstand the enemy, as well as the only really strong and capable fighter in Torune Aburame.
 * Konohagakure Symbol.svg Torune Aburame: leader of the Allied Forces, who summoned everyone else to the battlefield, but whose leadership was contested by other shinobi. Torune did not claim leadership, but simply did what Kabuto indicated. He was the strongest and most dangerous fighter in the team, the last of the entire alliance after a large-scale battle.
 * Land of Fire Symbol.svg Chūkaku: a ninja monk from Fire Temple and a former mentor of Chiriku. He is not a fighter per se, but possessed techniques to remove seals from sealed shinobi. A wise and calm old man who meditated on the sidelines for most of the battle.
 * Sunagakure Symbol.svg Daimaru: an active and daring young shinobi who died on a low-level mission. He was proud and tried to take command by bragging about his nicknames, which he believed everyone should have heard. In its essence, this is partly true and one of the shinobi standing nearby was frightened upon hearing one of his nicknames, but the other shinobi at the same time declared that he was hearing about him for the first time. Daimaru was the penultimate one to be sealed and showed some skill in ninjutsu using the Earth Release.
 * Amegakure Symbol.svg Heiji: calm and quiet shinobi, who during his lifetime was the right hand of Kandachi. He calmly stood on the sidelines for most of the battle and was also the one who discovered the location of Toroi's body. When the odds were tilted towards the enemy, Heiji helped his teammates escape and let himself be sealed without resistance.
 * Kumogakure Symbol.svg Osoi: an active man of age, who during his lifetime was Toroi's partner and died with him on a mission. He fights with the help of a kunai and during the battle he meets his son Musai. They communicate heart to heart and Osoi allows himself to be sealed.
 * Kusagakure Symbol.svg An overweight man from Kusagakure with a beard in light green flack jacket and a large scar running through his right eye.
 * Takigakure Symbol.svg A thin man from Takigakure with a large lightning-shaped scar running through his nose and deep wrinkles under his eyes, wearing a dark gray flack jacket.
 * Sunagakure Symbol.svg A man in standard Sunagakure shinobi clothes, who meets his brother and apologizes to him for some act during his lifetime. He sighs with great relief when he learns that he forgave him long ago.
 * Sunagakure Symbol.svg A black-haired man from Sunagakure who met his friend and decided to find out how his wife was doing. Upon learning that she married another, he is at first upset, but then he notices that such an outcome of events is quite obvious, since he died.
 * Sunagakure Symbol.svg A tall, thin man from Sunagakure with a high hair split in the middle of his head, wearing a sleeveless turtleneck and short flack jacket, and a mask on his face. He was one of the last to remain unsealed and left the battlefield with Torune. Having stumbled upon the body of the Third Raikage, this shinobi quite bravely rushes forward, but falls into a trap and his body destroys a special barrier.
 * Sunagakure Symbol.svg Two men from Sunagakure who ask Daimaru who he is. One is frightened upon hearing one of Daimaru's nicknames, while the second proudly declares that he is hearing about him for the first time.
 * Konohagakure Symbol.svg A fat man from Konohagakure, who replies to the enemy that there are a lot of them and they will take in quantity when he notices that they are just a bunch of weaklings.

Fourth Shinobi World War: Confrontation
After most of Kabuto's trump cards have been sealed, he decided to use all the failed experiments to unseal such needed shinobi as Toroi. Relying on quantity over quality, Kabuto unleashed the Reanimated Alliance on the battlefield.

The group immediately began to protest against the leadership of other people, as Daimaru did not want to obey Torune's orders, but other shinobi did not want to obey Daimaru's own orders. However, the most prominent fighters were able to take control of the matter and sent an army to retrieve Toroi's body, which was guarded by the Allied Shinobi Forces led by Musai.

The dead fighters attack and the defenders of the body, including Nonota, are frightened and panicked at first, but after the first counterattack, they realise that there was a horde of weaklings in front of them and confidently suppressed their invasion. During the battle, in different centres there are people from the opposing groups who were familiar during their lifetime. Someone asked for forgiveness from a friend, someone was interested in how his family was, and Musai met his father Osoi and talked heart to heart with him.

After most of the reanimated shinobi were sealed, Heiji used a Winding Smoke Technique and allowed some of the warriors to leave the battlefield, but he himself was surrounded and sealed. The most powerful fighters, led by Torune, were sent in search of the body of the Third Raikage. At the same time, Temari's team, descending in the other direction, was called back to protect the body.

Team Torune reached the target and one of the group tried to remove the seal from the Raikage's body, but falls into a trap and was sealed himself. The trap was exposed and Daimaru, using Earth Release: Sand Dance, shook the ground, removing seals. Chūkaku threw his prayer beads on the Raikage's body, and began removing the seal. At this time, Temari's team arrived and she attacked Chūkaku, interrupting the ritual, after which he was sealed.

Daimaru recognised Temari - they were childhood friends. Deciding that he had nothing to lose, Daimaru confessed his love to Temari, but she rejected his feelings, but thanked that he was the only one who was not afraid to communicate with her because she was the daughter of the Kazekage. Daimaru accepted this and said goodbye to the girl, allowing himself to be sealed. Torune is left alone and escapes.

After escaping, Torune finds a place far enough to execute a unique kinjutsu to his abilities. However, Shino is able to find him with his kikaichū. Notified from Torune's position, Shino starts a battle in order to stop Torune's kinjutsu. Once face to face with him, Torune asks if Shino made any friends, thinking back about their shared past. When they were little, Shibi was Torune's guardian after Shikuro died, leaving Torune and Shino growing to act as siblings. Torune showed him his insects, and saved him from going to the Root by volunteering himself. Torune explains that he never thought he would get a friend like he did in the Root, Fū Yamanaka. In the battle, Torune takes advantage from his taijutsu learned at Root, unleashing an accurate kick to Shino's stomach.

One of Naruto's clones appears and saves Shino from falling into Torune's kinjutsu. Shino shares his knowledge about the opponent's abilities, warning Naruto to not touch Torune's skin, thinking that as the only way his insects could spread their poison. Torune uses his Poison Cloud Technique to attack them from a distance, but it is blocked by Shino's insects. With the warning to not touch Torune's skin, Naruto starts fighting the reincarnated opponent, who tries to use kenjutsu against him, though Naruto succeeds in breaking his sword. Naruto manages to land a Rasengan, and Torune almost lands a punch on him, failing due to Shino putting himself in between them, taking the hit. Torune is confused that Shino isn't suffering the effects of his rinkaichū, and Shino reveals that his punch hit Shino's insects, which Shino has bred with Torune's own insects after he was recruited into Root. This allowed them to build up a resistance against their venom. Shino uses these insects to paralyse Torune, and applies a sealing tag, stopping him and his kinjutsu.

Fourth Shinobi World War: Climax
Later, when the Impure World Reincarnation Technique was cancelled, soul's of all shinobi returned to the afterlife.

Trivia

 * Despite the fact that all reincarnated shinobi are declared as failed experiments and, as can be seen, very weak, they all, including Daimaru and Heiji, wear vests denoting them as chūnin.
 * Some members appeared to have mismatched cloths. For example, a fat man in a Kumogakure flak jacket who had the Amegakure symbol on his forehead protector.