Arc 26The Moon and Kaguya
Chen became the Fourth Hokage, then secretly traveled to the moon with Himeji and fought the surviving Otsutsuki. After defeating Soki, Chen met the Sage of Six Paths, who warned him that Kaguya would threaten humanity and entrusted the future to him.
- Sarutobi Hiruzen spared Danzo but declared him a Rogue Ninja and ordered him to infiltrate Akatsuki, while Orochimaru took charge of Root.
- Chen forced the Fourth Raikage to withdraw by attacking the Hidden Cloud Village, then succeeded the retiring Third Hokage as the Fourth Hokage.
- Chen appointed allies to Konoha’s leadership, continued Root’s research with Orochimaru, and secretly left the village with Himeji to find the moon’s entrance.
- Chen and Himeji crossed the lake’s memory genjutsu, reached the moon, and discovered the ruins of a lunar Otsutsuki civilization devastated by civil war.
- Chen found Otsutsuki Hamura’s shrine and heard Kaguya call for help, then joined Himeji in confronting the lunar Otsutsuki and their puppets.
- Otsutsuki Soki drew on the Giant Tenseigan to battle Chen, who unleashed Perfect Susanoo strengthened by the nine Tailed Beasts and defeated him.
- The Sage of Six Paths appeared to Chen, reunited with the nine Tailed Beasts, and warned that Kaguya intended to reclaim all Chakra and turn humanity into White Zetsu.
- Chen left the Sage’s consciousness space unable to open his eyes, but sensed Kaguya on the moon and Black Zetsu near Indra’s Chakra.