Fourth Shinobi World War: Confrontation

The Shinobi World War Arc spans at chapter 515 to current. It covers the Fourth Great Shinobi World War where the Five Great Shinobi Countries all ally into the Allied Shinobi Forces to oppose Madara Uchiha and Akatsuki, all to protect the last remaining jinchūriki, Naruto Uzumaki and Killer Bee. The War arc formally began in chapter 515 with the war finally starting with both the Allied Shinobi Forces and Akatsuki moving out for battle.

Battle of the Ambush Squads
The first battle to happen in the war was when the two Ambush Squadrons met in battle. Kankurō lead the Surprise Attack Division against Sasori, Deidara, Chūkichi and Shin of the Surprise Attack and Diversion Platoon, having been resurrected by Kabuto Yakushi to fight in the War. Shin tried resisting the control, yet attacked against his will against his own brother Sai and his comrades. Through clever maneuvering and strategy, as well as Deidara enraging Sai, both Deidara and Sasori were captured in Kankurō's Black Secret Technique: Machine Triple Shot.

After seeing the picture finished in Sai's picture book, Shin's ties to the world were severed and he could pass on, breaking the Summoning: Impure World Resurrection. Chūkichi was returning to reinforce Deidara and Sasori. Sasori is then released from the summoning thanks to Kankurō in much the same way and Shin. With the new found information about how to release the Summoing: Impure World Resurrection by freeing the soul, Kankurō prepares his team to get to launch their ambush.

Elsewhere, Madara Uchiha meets up with Kabuto, who still holds onto Anko Mitarashi's unconcious body with his snake. Kabuto sensed that Sasori and Shin was released from his technique, having good feeling about how things are going well with his plan. He tells Madara to go ahead to the front lines while he keep hidden and focused on his technique. Gazing at Anko, Madara realizes that Anko was able to veered incredibly close to his hideout and Kabuto knew about it, figuring that Kabuto must have led her there as part of his plan for him and the Allied Shinobi Forces to take each other. However, Madara quietly states that in the end, Kabuto isn't using him, but he is the one using Kabuto.

Killer Bee attempts to teach Naruto the Tailed Beast Ball, but Naruto cannot turn into the Nine-Tails because his bond with it is weak, the Eight-Tails then explained to Naruto that whenever he uses the Nine-Tails' chakra he stocks his own and the Nine-Tails can steal it, in the end Naruto could lose it all and die if he uses the chakra constantly, and using Shadow Clones speeds up the process making them useless. The Eight-Tails explained that him and Bee were able to compramise on how much chakra each would take from the other (implying the tailed beast actually has to do so for whatever reason) eliminating the risk. Naruto desides to focus on his own skills with the Nine-Tails chakra, after Naruto fail's to construct a rasengan using the chakra arms instead of a shadow clone, Killer Bee notices that the technique is fundementally the same as the Tailed Beast ball and desides to help Naruto by telling him to balance the Yin and Yang chakra in an 8:2 ratio as one would do when using the Tailed Beast Ball.