Ch. 121Four Nations at War! The Shinobi War Begins
Summary
- Kumogakure’s planned attack: Uchiha Sora strengthens the border with the Land of Earth, anticipating that Kumogakure will use it as a route into the Land of Grass. The invasion is briefly delayed when the missing Eight-Tails jinchūriki, Killer B, returns to Kumogakure. The Fourth Raikage, furious at B’s disappearance and return, beats him, but Kumogakure’s leaders still decide to proceed with their plans.
- A hidden scheme is exposed: Kumogakure forces cross into the Land of Earth and attack Sora’s border. The Uchiha clan helps hold them back, while Sora’s Impure World Elites bring the battle to a stalemate. Three days later, Iwagakure attacks the Kumogakure forces from behind. Sora learns that Kumogakure intended to use its border deployment as cover for a surprise strike against the weakened Land of Earth. Ōnoki recognized the threat and attacked first.
- The war spreads: Sora withdraws his forces and lets Kumogakure and Iwagakure fight. Sunagakure takes advantage of Earth’s weakness, attacks Iwagakure, and forces Ōnoki to pay heavily for peace. The Fourth Kazekage then sends troops into the Land of Fire. Konoha resists, suffering further losses. Lightning, Earth, Wind, and Fire are now entangled in major fighting, while Water remains on the sidelines—marking the gradual start of the Fourth Shinobi World War.
- Sora’s next move: Rather than focus on the battles among the great villages, Sora remains concerned about Akatsuki and Obito Uchiha exploiting the chaos. He plans to contact more jinchūriki before Obito can act. With the Seven-Tails jinchūriki reportedly sheltering in Konoha—and the One-Tail and Nine-Tails also still targets—Sora decides to head to Konoha first.
Character developments and interactions
Sora proves strategically cautious: he anticipates Kumogakure’s route, responds to the invasion without personally entering the fight, and withdraws once the two major armies turn on each other. The Fourth Raikage is enraged and unsettled by Killer B’s disappearance, while B’s return reveals that he had escaped and spent time away before coming back to prevent the war. Ōnoki shows political vigilance by detecting Kumogakure’s betrayal, while the Fourth Kazekage acts opportunistically, exploiting Earth’s weakness and then pressuring Konoha. Sora’s attention remains fixed on preventing Obito from taking advantage of the wider conflict.
Significant themes
The chapter emphasizes shifting alliances and opportunism: shared enemies do not prevent nations from betraying one another or exploiting weakness. It also highlights the cost and momentum of war, as one conflict rapidly draws multiple villages into battle, while Sora’s efforts to protect the jinchūriki show the importance of acting before chaos can be used by a greater threat.