Arc 11The Battle for Kisen
Uka Senju’s mission to secure summoning contracts turned into a devastating battle against Kumogakure and Konoha forces, drawing the Senju and their allies into a wider conflict. After surviving the fighting and accepting Katsuyu’s help, Uka gained a powerful Sage Body that alarmed Mito Uzumaki and left his future training uncertain.
- Uka Senju drove Jiraiya from Kisen Island, secured the city for the Senju, and finalized a contract transferring the Merchant Ninja Organization to his clan.
- Hiruzen Sarutobi learned from Gamamaru that Uka’s Wood Release might revive the God Tree, then spread the prophecy and authorized Orochimaru’s forbidden research under restrictions.
- Uka Senju led an expedition to Summoning Island, negotiated contracts with the Bear, Albatross, and Golden Eagle clans, and returned toward home with his squad.
- The Third Raikage and Shimura Danzō ambushed Uka’s force at sea, and Inuzuka Furin died saving him as Mito Uzumaki, Katsuyu, and reinforcements joined the battle.
- Senju and allied forces battled Kumogakure and Konoha units while Mito Uzumaki fought the Third Raikage and Blue B manifested the Eight-Tails.
- Katsuyu took Uka Senju to Shikkotsu Forest, explained her predicament and her need for his future strength, and gave him stored energy before sending him back to the fighting.
- After the battle, Uka Senju returned to help his teacher, while Senju Toka mourned the Second Elder and other forces repositioned amid the spreading conflict.
- Uka Senju used accumulated energy to create a Sage Body, then trained with his new strength as Mito Uzumaki sensed chakra like Hashirama’s and questioned whether Tsukika should train him.